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100+ Genpact Interview Questions and Answers

Updated 21 Nov 2024
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Q1. Which refrigerant is currently used in Air conditioning systems now a days

Ans.

The most commonly used refrigerant in air conditioning systems nowadays is R-410A.

  • R-410A is a hydrofluorocarbon (HFC) refrigerant that does not contribute to ozone depletion.

  • It has replaced the previously used R-22 refrigerant, which is being phased out due to its harmful effects on the environment.

  • R-410A has a higher cooling capacity and operates at higher pressures than R-22.

  • It is used in both residential and commercial air conditioning systems.

  • Other refrigerants used in ai...read more

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Q2. What's a vfd? How does it functions? What's difference in vrf and vav system? Which nfpa code used for fire pumps? What's a freeboard in tanks?

Ans.

A VFD is a Variable Frequency Drive used to control the speed of an electric motor. VRF and VAV systems are different types of HVAC systems. NFPA 20 is the code used for fire pumps. Freeboard is the distance between the liquid level and the top of a tank.

  • VFD stands for Variable Frequency Drive.

  • It is used to control the speed of an electric motor by varying the frequency and voltage supplied to the motor.

  • VFDs are commonly used in industrial applications to save energy and prov...read more

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Q3. What is the Enthalpy and Entropy, In Entropy how heat loss happen

Ans.

Enthalpy is the heat content of a system, while entropy is the measure of disorder or randomness in a system.

  • Enthalpy is the sum of internal energy and the product of pressure and volume.

  • Entropy is the measure of the number of ways energy can be distributed in a system.

  • Heat loss in entropy occurs due to the transfer of energy from a hot object to a cold object.

  • Entropy always increases in a closed system, leading to a decrease in available energy.

  • Enthalpy and entropy are impor...read more

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Q4. 7. what is adiabatic process and Hyperbolic process

Ans.

Adiabatic process is a thermodynamic process where no heat is exchanged with the surroundings. Hyperbolic process is a type of adiabatic process.

  • Adiabatic process occurs when there is no heat transfer between the system and its surroundings

  • Hyperbolic process is a type of adiabatic process where the pressure and volume of a gas are inversely proportional

  • Adiabatic compression of a gas can cause an increase in temperature

  • Adiabatic expansion of a gas can cause a decrease in tempe...read more

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Q5. 8. What is the difference between IDU and ODU

Ans.

IDU and ODU are abbreviations used in air conditioning systems. IDU stands for Indoor Unit and ODU stands for Outdoor Unit.

  • IDU is the unit that is installed inside the room or building, while ODU is installed outside.

  • IDU is responsible for cooling or heating the air inside the room, while ODU is responsible for dissipating the heat outside.

  • IDU is connected to ODU through refrigerant pipes and electrical cables.

  • Examples of IDU include wall-mounted units, ceiling cassette units...read more

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Q6. 5. Which type of engine we use in Train

Ans.

Diesel engines are commonly used in trains.

  • Trains typically use diesel engines due to their high torque and fuel efficiency.

  • Electric engines are also used in some trains, especially in urban areas.

  • Steam engines were used in the past but are now rare.

  • Hybrid engines that combine diesel and electric power are becoming more common.

  • The type of engine used in a train depends on factors such as the distance it travels and the terrain it covers.

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Q7. What is the difference between AC and Cooler

Ans.

AC is a device that cools and dehumidifies air while cooler is a device that cools water or other liquids.

  • AC is used to cool and dehumidify air in a room or building

  • Cooler is used to cool water or other liquids for drinking or industrial purposes

  • AC uses refrigerant to cool the air while cooler uses water or other liquids

  • AC is more expensive and complex than cooler

  • AC is more commonly used in residential and commercial buildings while cooler is more commonly used in industrial ...read more

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Q8. How many type of pipe use in hvac

Ans.

There are several types of pipes used in HVAC systems.

  • Copper pipes: commonly used for refrigerant lines and water supply

  • PVC pipes: used for condensate drain lines

  • Galvanized steel pipes: used for ductwork and water supply

  • Flexible ducts: used for air distribution

  • PEX pipes: used for radiant heating systems

  • Stainless steel pipes: used for high-pressure applications

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Q9. What do you do when lot is NG & urgent for use?

Ans.

I will immediately investigate the cause of the NG lot and work with the team to find a solution to make it usable.

  • Investigate the cause of the NG lot

  • Work with the team to find a solution

  • Prioritize urgent use of the lot

  • Ensure quality control measures are in place

  • Communicate with stakeholders about the situation

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Q10. 4. What is Thermodynamics

Ans.

Thermodynamics is the study of energy and its transformations in relation to heat and work.

  • It deals with the behavior of energy and its conversion from one form to another.

  • It involves the study of heat transfer, work, and the properties of substances.

  • Thermodynamics is essential in designing and analyzing various mechanical systems.

  • Examples include the study of engines, refrigeration systems, and power plants.

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Q11. What is the potential risk that repair and maintenance work usually face?

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Q12. Operating pressure & boiling points of R--22 and R-32 gases

Ans.

R-22 has a boiling point of -40.8°C and an operating pressure of 4048 kPa. R-32 has a boiling point of -51.7°C and an operating pressure of 5880 kPa.

  • R-22 has a higher operating pressure than R-32

  • R-32 has a lower boiling point than R-22

  • Operating pressure and boiling point are important factors to consider when working with refrigerant gases

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Q13. What is the standard earthing voltage

Ans.

The standard earthing voltage is typically 0 volts.

  • Standard earthing voltage is usually 0 volts to ensure safety in electrical systems

  • Earthing voltage can vary depending on the specific requirements of the system

  • Proper earthing helps to prevent electrical shocks and equipment damage

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Q14. 6. Draw the P,V and T,S diagram

Ans.

P,V and T,S diagrams are graphical representations of thermodynamic processes.

  • P,V diagram shows the relationship between pressure and volume.

  • T,S diagram shows the relationship between temperature and entropy.

  • P,V and T,S diagrams are useful in analyzing thermodynamic cycles.

  • P,V and T,S diagrams can be used to determine the efficiency of a heat engine.

  • P,V and T,S diagrams are commonly used in the design of power plants and refrigeration systems.

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Q15. What is the difference between of refrigeration and air conditioning?

Ans.

Refrigeration is the process of removing heat from a confined space, while air conditioning involves both cooling and heating of air in a space.

  • Refrigeration is mainly focused on removing heat from a space to lower the temperature, typically used in preserving food or creating cold storage.

  • Air conditioning involves both cooling and heating of air to maintain a comfortable temperature in a space, commonly used in homes, offices, and vehicles.

  • Refrigeration systems typically hav...read more

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Q16. What do you know about Blue star and it's products

Ans.

Blue Star is a leading air conditioning and commercial refrigeration company in India.

  • Blue Star offers a wide range of air conditioning solutions for residential, commercial, and industrial applications.

  • They also provide refrigeration products such as water coolers, deep freezers, and cold storages.

  • Blue Star is known for its energy-efficient and eco-friendly products.

  • They have a strong presence in the Indian market and have expanded globally as well.

  • Some popular Blue Star pro...read more

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Q17. Explain the requirements of U- bends in the Cu-pipings

Ans.

U-bends are required in Cu-pipings to prevent the formation of airlocks and to facilitate the flow of fluids.

  • U-bends are used to create a trap in the piping system to prevent the accumulation of air or gas pockets.

  • They also help in maintaining a constant flow of fluids by preventing blockages.

  • U-bends are commonly used in plumbing systems, HVAC systems, and industrial piping systems.

  • The size and shape of the U-bend depend on the specific application and the fluid being transpo...read more

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Q18. Operating temperatures of Commercial refrigeration units

Ans.

Commercial refrigeration units have varying operating temperatures depending on the type and purpose of the unit.

  • The operating temperature of a commercial refrigeration unit depends on its intended use and the type of refrigerant used.

  • For example, a walk-in freezer typically operates at -10 to 0 degrees Fahrenheit, while a reach-in refrigerator may operate at 35 to 40 degrees Fahrenheit.

  • It is important to ensure that the unit is operating within its recommended temperature ra...read more

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Q19. Explain about the transformer Thumb rule

Ans.

The transformer thumb rule is a quick method to estimate the approximate turns ratio and voltage ratio of a transformer.

  • The thumb rule states that the turns ratio is approximately equal to the square root of the voltage ratio.

  • It is based on the assumption that the transformer is ideal and operates under normal conditions.

  • For example, if the primary voltage is 220V and the secondary voltage is 110V, the turns ratio would be approximately 2:1.

  • The thumb rule is often used for qu...read more

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Q20. Explain basic Refrigeration cycle

Ans.

The refrigeration cycle is a process that removes heat from a space and transfers it to the outside environment.

  • The cycle starts with the compressor compressing the refrigerant gas, which raises its temperature and pressure.

  • The hot refrigerant gas then flows through the condenser coils, where it releases heat and condenses into a liquid.

  • The liquid refrigerant then flows through the expansion valve, which reduces its pressure and temperature.

  • The cool refrigerant then flows thr...read more

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Q21. What's materials used for earthing

Ans.

Materials commonly used for earthing include copper, galvanized steel, and conductive concrete.

  • Copper rods

  • Galvanized steel rods

  • Conductive concrete

  • Earthing strips

  • Earthing plates

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Q22. How to do heat load for an ice cream chamber

Ans.

Heat load for an ice cream chamber is calculated based on factors like room temperature, insulation, and heat generated by equipment.

  • Calculate the heat gain from the room temperature by considering the difference between the desired temperature inside the chamber and the ambient temperature outside.

  • Take into account the heat generated by the equipment inside the chamber, such as the compressor and lights.

  • Factor in the insulation of the chamber walls, ceiling, and floor to det...read more

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Q23. 1)Work experience? 2)What is DBO ? 3) GST Percentage on HVAC?

Ans.

Work experience, DBO stands for Design Build Operate, GST percentage on HVAC is 18%.

  • Work experience includes 5 years in commercial management.

  • DBO stands for Design Build Operate, a project delivery method where the contractor is responsible for the design, construction, and operation of the project.

  • GST percentage on HVAC is 18%, as per current tax regulations in India.

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Q24. How you will handle Customers at different different situation

Ans.

I will handle customers with empathy, active listening, problem-solving skills, and clear communication.

  • Show empathy and understanding towards customers' concerns

  • Practice active listening to fully understand the issue before providing solutions

  • Utilize problem-solving skills to address customer needs effectively

  • Communicate clearly and professionally to ensure customers are informed and satisfied

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Q25. What is the purpose of work.

Ans.

The purpose of work is to contribute to society, fulfill personal goals, and earn a living.

  • To contribute to society by providing goods or services that meet the needs of others

  • To fulfill personal goals and aspirations by using skills and talents

  • To earn a living and support oneself and one's family financially

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Q26. Single line diagram of HT/LT distribution system.

Ans.

A single line diagram is a simplified representation of an electrical distribution system, showing the flow of power from the source to various loads.

  • It uses symbols to represent different components like transformers, circuit breakers, switches, etc.

  • The diagram shows the connections between these components and the direction of power flow.

  • It helps in understanding the overall layout and configuration of the distribution system.

  • It is commonly used in electrical engineering an...read more

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Q27. WHAT TYPE OF SOFTWARES ARE USED

Ans.

Various software tools are used for electrical design engineering.

  • CAD software like AutoCAD, SolidWorks, and CATIA for creating 2D and 3D models

  • Simulation software like MATLAB, PSCAD, and ETAP for analyzing and testing designs

  • Programming software like LabVIEW and C++ for developing control systems

  • Project management software like MS Project for scheduling and tracking progress

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Q28. Explain various modes of heat transfer

Ans.

Heat transfer occurs in three modes: conduction, convection, and radiation.

  • Conduction: Heat transfer through a material without any movement of the material itself. Example: Touching a hot stove.

  • Convection: Heat transfer through the movement of fluids (liquids or gases). Example: Boiling water.

  • Radiation: Heat transfer through electromagnetic waves. Example: Feeling the warmth of the sun.

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Q29. What is sensitive heat and latent heat

Ans.

Sensitive heat is the heat required to change the temperature of a substance without changing its state, while latent heat is the heat required to change the state of a substance without changing its temperature.

  • Sensitive heat is the heat needed to raise the temperature of a substance without changing its state

  • Latent heat is the heat needed to change the state of a substance without changing its temperature

  • Examples of latent heat include the heat needed to melt ice into water...read more

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Q30. Where do you see the cold room business

Ans.

The cold room business is expected to grow significantly due to increasing demand for temperature-controlled storage and transportation of goods.

  • Rising demand for cold storage facilities for perishable goods

  • Expansion of pharmaceutical and biotech industries requiring temperature-controlled storage

  • Increased focus on food safety and quality standards driving the need for cold chain logistics

  • Technological advancements in refrigeration and monitoring systems improving efficiency ...read more

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Q31. Why manhole cover are round in shape

Ans.

Manhole covers are round in shape to prevent them from falling into the hole.

  • Round covers cannot fall into the hole as they cannot fit through diagonally.

  • Round covers can be easily rolled to move them from one place to another.

  • Round covers are easier to manufacture and install compared to other shapes.

  • Round covers are more aesthetically pleasing compared to other shapes.

  • Other shapes such as square or rectangular covers can be rotated and fall into the hole.

  • Round covers are sa...read more

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Q32. What is the suction pressure?

Ans.

Suction pressure is the pressure at the inlet of a chiller system, which helps in the cooling process.

  • Suction pressure is measured in pounds per square inch (psi) or kilopascals (kPa).

  • It indicates the pressure at which the refrigerant enters the compressor.

  • The suction pressure is typically lower than the discharge pressure.

  • A low suction pressure may indicate a refrigerant leak or a problem with the evaporator.

  • A high suction pressure may indicate a restriction in the refrigera...read more

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Q33. Name the types of families in revit?

Ans.

There are three types of families in Revit: system families, loadable families, and in-place families.

  • System families are predefined families that are included with Revit, such as walls, floors, and roofs.

  • Loadable families are families that are created by users or downloaded from external sources and can be loaded into a project.

  • In-place families are families that are created directly within a project and are specific to that project.

  • Examples of system families include doors,...read more

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Q34. What is chemical formula of R134a?

Ans.

The chemical formula of R134a is C2H2F4.

  • R134a is also known as 1,1,1,2-Tetrafluoroethane.

  • It is a non-ozone depleting refrigerant commonly used in air conditioning systems.

  • The chemical formula C2H2F4 represents the two carbon atoms, two hydrogen atoms, and four fluorine atoms in R134a.

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Q35. What is the marketing .

Ans.

Marketing is the process of promoting and selling products or services by creating awareness, generating interest, and driving customer action.

  • Marketing involves identifying target audiences and understanding their needs and preferences.

  • It includes developing strategies and tactics to reach and engage with the target audience.

  • Marketing channels can include advertising, public relations, social media, email marketing, content marketing, etc.

  • Measurement and analysis of marketin...read more

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Q36. What is sell and tube type condenser ?

Ans.

A shell and tube type condenser is a heat exchanger used in HVAC systems to transfer heat from the refrigerant gas to the cooling water or air.

  • Consists of a series of tubes through which the refrigerant flows, surrounded by a shell through which the cooling medium flows

  • Efficient in transferring heat due to large surface area provided by the tubes

  • Commonly used in air conditioning systems and refrigeration units

  • Examples include water-cooled condensers in large commercial HVAC s...read more

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Q37. What are the properties of thermodynamics

Ans.

Thermodynamics is the study of heat and its relationship with other forms of energy.

  • Thermodynamics deals with the transfer of energy between systems and their surroundings

  • It involves the study of temperature, pressure, and volume

  • The laws of thermodynamics govern the behavior of energy in a system

  • Thermodynamics has applications in fields such as engineering, physics, and chemistry

  • Examples of thermodynamic processes include heating and cooling, work done by a system, and change...read more

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Q38. What are the targets and how targets achieved

Ans.

Targets are set based on production goals and are achieved through effective planning, monitoring, and optimization of processes.

  • Targets are typically set by management based on production goals, such as increasing output or reducing costs.

  • Achieving targets involves creating detailed production plans, monitoring progress regularly, and making adjustments as needed.

  • Optimizing processes, improving efficiency, and addressing any bottlenecks are key strategies for achieving targe...read more

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Q39. What is Object oriented programming language.

Ans.

Object-oriented programming is a programming paradigm that uses objects to represent and manipulate data.

  • Object-oriented programming focuses on creating reusable code by breaking down programs into objects.

  • Objects have properties (attributes) and behaviors (methods) that can be accessed and modified.

  • Encapsulation, inheritance, and polymorphism are key concepts in object-oriented programming.

  • Examples of object-oriented programming languages include Java, Python, and C++.

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Q40. why prefer object oriented programming langugae

Ans.

Object-oriented programming allows for modular, reusable, and maintainable code.

  • Encapsulation allows for data hiding and protects code from external interference.

  • Inheritance allows for code reuse and promotes code organization.

  • Polymorphism allows for flexibility and extensibility in code design.

  • Examples of popular object-oriented programming languages include Java, Python, and C++.

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Q41. Why do we use compressor in VCRS

Ans.

Compressors in VCRs are used to compress the refrigerant gas, increasing its pressure and temperature for efficient heat transfer.

  • Compressors help in maintaining the desired temperature inside the VCR by compressing the refrigerant gas.

  • They increase the pressure and temperature of the refrigerant gas, making it easier to transfer heat.

  • Compressors play a crucial role in the cooling process of VCRs by circulating the refrigerant through the system.

  • Examples of compressors used i...read more

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Q42. How to calculate chiller approach.

Ans.

Chiller approach can be calculated by subtracting the leaving chilled water temperature from the entering condenser water temperature.

  • Calculate the entering condenser water temperature (ECWT)

  • Calculate the leaving chilled water temperature (LCWT)

  • Subtract ECWT from LCWT to get the chiller approach

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Ans.

Air-conditioning is a system that controls temperature, humidity, and air quality in indoor spaces.

  • Air-conditioning regulates temperature by cooling or heating the air.

  • It also controls humidity levels to maintain comfort.

  • Air-conditioning improves air quality by filtering out pollutants and circulating fresh air.

  • Examples of air-conditioning systems include central air conditioning, window units, and split systems.

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Q44. WHAT IS THE MAIN RULES OF ACCOUNTING

Ans.

The main rules of accounting are the principles and guidelines that govern the preparation and presentation of financial statements.

  • The principle of consistency

  • The principle of relevance

  • The principle of materiality

  • The principle of conservatism

  • The principle of objectivity

  • The principle of full disclosure

  • The principle of going concern

  • The principle of matching

  • The principle of cost

  • The principle of dual aspect

  • The principle of time period

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Q45. What makes ac to dc

Ans.

AC is converted to DC using a rectifier circuit.

  • AC to DC conversion is done using a rectifier circuit, which converts alternating current (AC) to direct current (DC).

  • Rectifier circuits can be half-wave or full-wave, depending on the type of rectification needed.

  • Examples of rectifier circuits include diode rectifiers, bridge rectifiers, and voltage multiplier circuits.

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Q46. What is thermodynamics? Laws of thermodynamics

Ans.

Thermodynamics is the study of heat and its relationship with other forms of energy.

  • It deals with the transfer of heat and energy between systems.

  • It is based on the laws of thermodynamics which govern the behavior of energy in a system.

  • The laws of thermodynamics include the conservation of energy, the increase of entropy, and the impossibility of achieving absolute zero temperature.

  • Examples of thermodynamics in action include the operation of engines, refrigeration systems, a...read more

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Q47. what is the green house gas (co2)

Ans.

CO2 is a greenhouse gas that contributes to global warming by trapping heat in the atmosphere.

  • CO2 is a colorless and odorless gas

  • It is produced by burning fossil fuels such as coal, oil, and natural gas

  • CO2 levels have been increasing due to human activities like deforestation and industrial processes

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Q48. Mention the program of the unit

Ans.

The program of the unit refers to the software that controls its functions and operations.

  • The program may include various modules for different functions such as diagnostics, maintenance, and control.

  • Examples of programs for service engineers include MATLAB, LabVIEW, and Python.

  • The program may also include firmware updates and patches to improve performance and fix bugs.

  • Service engineers may need to troubleshoot and debug the program to identify and resolve issues.

  • Regular upd...read more

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Q49. What is Value of production creative

Ans.

The value of production creativity lies in its ability to drive innovation, improve efficiency, and enhance product quality.

  • Production creativity leads to the development of new and innovative products.

  • It helps in finding creative solutions to production challenges, leading to improved efficiency.

  • Creative production processes can result in higher quality products.

  • Incorporating creative ideas in production can differentiate a company from its competitors.

  • Creative approaches ca...read more

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Q50. Strategy to make EHS aligning with business priority

Ans.

Align EHS with business priorities by integrating EHS goals with overall business objectives and ensuring leadership support.

  • Integrate EHS goals with overall business objectives

  • Ensure leadership support for EHS initiatives

  • Develop metrics to measure EHS performance and impact on business outcomes

  • Provide regular updates to senior management on EHS progress and alignment with business priorities

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Q51. How many types of fire extinguisher

Ans.

There are five main types of fire extinguishers: water, foam, dry powder, CO2, and wet chemical.

  • Water fire extinguishers are suitable for Class A fires involving solid materials like wood or paper.

  • Foam fire extinguishers are effective for Class A and B fires involving flammable liquids like petrol or oil.

  • Dry powder fire extinguishers are suitable for Class A, B, and C fires involving flammable gases like propane.

  • CO2 fire extinguishers are effective for Class B and electrical ...read more

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Q52. What is company future planning?

Ans.

The company's future planning involves expanding its services and increasing its customer base.

  • The company plans to invest in new technology to improve its services.

  • It aims to expand its operations to new regions and countries.

  • The company plans to increase its workforce to meet the growing demand for its services.

  • It also plans to focus on customer satisfaction and retention by providing quality services.

  • The company is exploring new opportunities in the market to diversify its...read more

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Q53. Process of HT cable termination

Ans.

HT cable termination is the process of connecting high tension cables to electrical equipment or devices.

  • Ensure the cable is properly sized and rated for the voltage and current requirements.

  • Clean and prepare the cable ends by removing any insulation or contaminants.

  • Strip the cable insulation to expose the conductor.

  • Insert the cable into the termination device or connector.

  • Tighten the termination device to secure the cable in place.

  • Perform insulation resistance and continuity...read more

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Q54. How you will manage a project deviation?

Ans.

I will assess the deviation, identify the root cause, develop a plan to address it, communicate with stakeholders, and adjust the project schedule/budget as needed.

  • Assess the deviation to understand the impact on project goals and timeline

  • Identify the root cause of the deviation through analysis and investigation

  • Develop a plan to address the deviation, including adjustments to project schedule, budget, and resources

  • Communicate with stakeholders about the deviation and propose...read more

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Q55. How many taype of compressor us in hvav

Ans.

There are two types of compressors used in HVAC systems.

  • The two types of compressors are reciprocating and rotary compressors.

  • Reciprocating compressors use pistons to compress refrigerant gas.

  • Rotary compressors use rotating blades to compress refrigerant gas.

  • Reciprocating compressors are commonly used in smaller HVAC systems.

  • Rotary compressors are commonly used in larger HVAC systems.

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Ans.

Managing a project involves planning, organizing, and controlling resources to achieve specific goals.

  • Create a project plan with clear objectives, deliverables, and timelines.

  • Assign tasks to team members based on their skills and expertise.

  • Monitor progress regularly and make adjustments as needed.

  • Communicate effectively with stakeholders to ensure everyone is on the same page.

  • Use project management tools and software to streamline processes.

  • Manage risks and issues proactively...read more

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Q57. What is account details

Ans.

Account details refer to specific information related to a financial account, including transactions, balances, and account holder information.

  • Account details typically include the account holder's name, account number, and contact information.

  • They also include transaction history, such as deposits, withdrawals, and transfers.

  • Account details may also include current balances, interest rates, and any fees associated with the account.

  • Examples of account details include a bank s...read more

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Q58. What is mis executive

Ans.

MIS Executive stands for Management Information System Executive, responsible for managing and analyzing data to support decision-making.

  • MIS Executive is responsible for collecting, analyzing, and presenting data to support management decision-making.

  • They use various software tools to generate reports, dashboards, and presentations for management.

  • MIS Executives often work closely with different departments to gather relevant data and ensure accuracy.

  • Examples of tasks include ...read more

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Q59. What is refrigeration cycle ?

Ans.

Refrigeration cycle is a process in which refrigerant absorbs heat from a low-temperature area and releases it in a high-temperature area.

  • Refrigerant absorbs heat from the evaporator coil and evaporates into a gas.

  • The compressor then compresses the gas, raising its temperature and pressure.

  • The hot gas flows through the condenser coil, releasing heat and condensing back into a liquid.

  • The liquid refrigerant passes through the expansion valve, where it expands and cools down bef...read more

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Q60. Which type of gases ?

Ans.

Various types of gases are used in different industries and applications, such as oxygen, nitrogen, hydrogen, and carbon dioxide.

  • Oxygen

  • Nitrogen

  • Hydrogen

  • Carbon dioxide

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Q61. Which type of chiller?

Ans.

The type of chiller used depends on the specific requirements of the system, such as cooling capacity, energy efficiency, and space constraints.

  • Different types of chillers include air-cooled chillers, water-cooled chillers, absorption chillers, and centrifugal chillers.

  • The choice of chiller type is influenced by factors such as the temperature range required, the size of the system, and the availability of water for cooling.

  • For example, air-cooled chillers are often used in s...read more

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Q62. How refrigeration work ?

Ans.

Refrigeration works by removing heat from a space or substance to lower its temperature.

  • Refrigerant absorbs heat from the space or substance being cooled

  • The refrigerant then moves to the compressor where it is compressed and heated

  • The hot, pressurized refrigerant moves to the condenser where it releases heat and condenses into a liquid

  • The liquid refrigerant moves to the expansion valve where it expands and cools down

  • The cooled refrigerant then moves to the evaporator where it...read more

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Q63. Types of transformers?

Ans.

There are several types of transformers used in electrical systems.

  • Power transformers

  • Distribution transformers

  • Instrument transformers

  • Auto transformers

  • Isolation transformers

  • Step-up transformers

  • Step-down transformers

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Q64. What is chiller market size

Ans.

The chiller market size refers to the total revenue generated by the sales of chillers in a specific region or globally.

  • The global chiller market size was valued at $8.5 billion in 2020 and is projected to reach $11.8 billion by 2025.

  • Factors such as increasing demand for cooling systems in commercial buildings, industrial applications, and data centers are driving the growth of the chiller market.

  • Key players in the chiller market include Daikin Industries, Johnson Controls, T...read more

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Q65. How many types of compressor?

Ans.

There are mainly four types of compressors: reciprocating, rotary, scroll, and centrifugal.

  • Reciprocating compressors use pistons to compress the refrigerant.

  • Rotary compressors use rotating vanes or blades to compress the refrigerant.

  • Scroll compressors use two spiral-shaped scrolls to compress the refrigerant.

  • Centrifugal compressors use a rotating impeller to compress the refrigerant.

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Q66. what is var refrigiration ?

Ans.

VAR refrigeration stands for Variable Refrigerant Flow, a technology that controls the amount of refrigerant flowing to multiple indoor units in a building.

  • VAR refrigeration systems use advanced controls to vary the flow of refrigerant based on the cooling or heating needs of different zones in a building.

  • This technology allows for individual temperature control in different rooms or areas, increasing energy efficiency and comfort.

  • VAR refrigeration systems are commonly used i...read more

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Q67. Safety tests in electronic parts

Ans.

Safety tests are crucial for electronic parts to ensure they meet industry standards and prevent hazards.

  • Safety tests include electrical safety, fire resistance, and electromagnetic compatibility tests.

  • Electrical safety tests ensure that the electronic part does not pose a risk of electric shock or electrocution to users.

  • Fire resistance tests ensure that the electronic part does not catch fire or contribute to the spread of fire.

  • Electromagnetic compatibility tests ensure that...read more

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Q68. What is fire please tell me

Ans.

Fire is a rapid chemical reaction that releases heat, light, and various gases.

  • Fire is a result of the combustion process, where a fuel source combines with oxygen in the presence of heat to produce flames.

  • It requires three elements to sustain: fuel, oxygen, and heat.

  • Examples of fuel sources include wood, paper, gasoline, and natural gas.

  • Fire can spread rapidly and pose a significant risk to life and property if not controlled.

  • Fire safety measures include prevention, detectio...read more

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Q69. Main compartment in refrigerationcycle ?

Ans.

The main compartment in a refrigeration cycle is the evaporator.

  • The evaporator is where the refrigerant absorbs heat from the air or water being cooled.

  • It is located inside the refrigerator or air conditioning unit.

  • The evaporator coils are filled with the refrigerant, which evaporates as it absorbs heat.

  • The evaporator is connected to the compressor, which then compresses the refrigerant gas to raise its temperature.

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Q70. Full form of MCBA

Ans.

MCBA stands for Master of Construction Business Administration.

  • MCBA is a postgraduate degree program that focuses on the business aspects of the construction industry.

  • It covers topics such as project management, finance, marketing, and strategic planning.

  • Example: John completed his MCBA to advance his career in construction management.

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Q71. How would you do the heat load

Ans.

Calculating heat load involves determining the amount of heat energy that needs to be removed from a space to maintain a comfortable temperature.

  • Calculate the heat load by considering factors such as the size of the space, insulation, number of occupants, equipment, and lighting.

  • Use formulas such as Q = U * A * ΔT to calculate heat transfer through walls, windows, and roofs.

  • Consider the heat generated by appliances, computers, and other equipment in the space.

  • Factor in the he...read more

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Q72. what is motor and their uses

Ans.

A motor is a device that converts electrical energy into mechanical energy to perform various tasks.

  • Motors are used in various applications such as industrial machinery, household appliances, vehicles, and robotics.

  • Examples include electric motors in fans, pumps, refrigerators, and electric vehicles.

  • Motors can be categorized into different types such as AC motors, DC motors, servo motors, and stepper motors.

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Q73. What is IPLV in chillers

Ans.

IPLV stands for Integrated Part Load Value and is a measure of chiller efficiency under varying load conditions.

  • IPLV takes into account the chiller's efficiency at different operating capacities, providing a more accurate representation of overall efficiency.

  • It is calculated based on the chiller's performance at 100%, 75%, 50%, and 25% load conditions.

  • IPLV is commonly used in the HVAC industry to compare the energy efficiency of different chillers.

  • For example, a chiller with ...read more

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Q74. What is their functions?

Ans.

The functions of a Civil Site Engineer include planning, designing, and overseeing construction projects.

  • Planning and designing construction projects

  • Overseeing construction activities and ensuring compliance with regulations

  • Preparing cost estimates and budgets

  • Collaborating with architects, contractors, and other professionals

  • Ensuring safety and quality standards are met

  • Managing project timelines and schedules

  • Conducting site inspections and resolving issues

  • Maintaining project ...read more

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Q75. How do you execute projects?

Ans.

We execute projects by following a structured approach that includes planning, monitoring, controlling, and closing.

  • We start by defining project scope, objectives, and deliverables.

  • We create a project plan that includes timelines, budgets, and resources.

  • We monitor project progress regularly and make adjustments as needed.

  • We ensure quality control and risk management throughout the project.

  • We close the project by delivering the final product and conducting a post-project revie...read more

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Q76. Explain chiller Cop and diff between iplv and nplv

Ans.

Chiller COP is a measure of cooling efficiency. IPLV and NPLV are different methods to calculate the average efficiency of a chiller over a range of operating conditions.

  • Chiller COP stands for Coefficient of Performance and is a ratio of cooling output to energy input.

  • IPLV (Integrated Part Load Value) is a measure of chiller efficiency at various part-load conditions.

  • NPLV (Non-Integrated Part Load Value) is a similar measure but does not consider the part-load performance of ...read more

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Q77. WHAT IS RECONCILATION

Ans.

Reconciliation is the process of comparing two sets of records to ensure they are accurate and in agreement.

  • It involves identifying and resolving discrepancies between the two sets of records.

  • Reconciliation is commonly used in accounting to ensure that financial statements are accurate.

  • Examples of reconciliation include bank statement reconciliation, inventory reconciliation, and account reconciliation.

  • The process of reconciliation can be done manually or through automated so...read more

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Q78. SUBSTATION DESIGN

Ans.

Substation design involves the planning and layout of electrical equipment and systems for power distribution.

  • Consideration of load requirements and voltage levels

  • Selection of appropriate equipment such as transformers and circuit breakers

  • Design of grounding and lightning protection systems

  • Integration of communication and control systems

  • Adherence to safety standards and regulations

  • Examples: Gas Insulated Substations (GIS), Air Insulated Substations (AIS), Hybrid Substations

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Q79. Design a cold room for ice cream storage

Ans.

Design a cold room for ice cream storage with optimal temperature control and storage capacity.

  • Ensure the cold room is well-insulated to maintain a consistent temperature.

  • Install a reliable cooling system to keep the temperature at -20°C to -25°C for ice cream storage.

  • Include shelving units or racks to maximize storage capacity and organization.

  • Consider using stainless steel or food-grade materials for easy cleaning and maintenance.

  • Implement a temperature monitoring system to...read more

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Q80. MOG full forms in transformer?

Ans.

MOG stands for Magnetic Oil Gauge in a transformer.

  • MOG stands for Magnetic Oil Gauge.

  • It is used to measure the level of oil in a transformer.

  • It consists of a float that rises and falls with the oil level, and a magnetic coupling that transmits the position of the float to an indicator.

  • The indicator displays the oil level, allowing the supervisor to monitor and maintain the proper oil level in the transformer.

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Q81. Explain Discharge supe heat.

Ans.

Discharge superheat is the temperature difference between the refrigerant's saturation temperature and the actual temperature at the outlet of the compressor.

  • Discharge superheat is a critical parameter in refrigeration systems to ensure proper compressor operation.

  • It is calculated by subtracting the refrigerant's saturation temperature at the discharge pressure from the actual temperature at the compressor outlet.

  • High discharge superheat can indicate issues such as low refrig...read more

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Q82. What is account

Ans.

Accounting is the process of recording financial transactions and summarizing them in financial statements.

  • Accounting involves recording financial transactions such as sales, purchases, and expenses.

  • It also includes summarizing these transactions in financial statements like balance sheets and income statements.

  • Accounting helps in analyzing the financial health of a business and making informed decisions.

  • Examples of accounts include cash account, accounts receivable, accounts...read more

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Q83. Usage of Thermostats

Ans.

Thermostats are used to regulate temperature in homes and buildings.

  • Thermostats can be programmed to adjust temperature based on time of day or occupancy.

  • Smart thermostats can be controlled remotely through a mobile app.

  • Thermostats can also be used to monitor energy usage and save money on utility bills.

  • Different types of thermostats include programmable, non-programmable, and smart thermostats.

  • Thermostats are commonly used in HVAC systems for heating and cooling.

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Q84. Setting new KRA targets

Ans.

Setting new KRA targets involves identifying key areas for improvement and aligning them with organizational goals.

  • Identify areas for improvement based on past performance and feedback

  • Align targets with organizational goals and priorities

  • Ensure targets are specific, measurable, achievable, relevant, and time-bound (SMART)

  • Communicate targets clearly to all stakeholders

  • Monitor progress regularly and make adjustments as needed

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Q85. How to plan a project?

Ans.

Project planning involves setting objectives, creating a timeline, allocating resources, and identifying potential risks.

  • Define project scope and objectives

  • Create a detailed project timeline

  • Allocate resources effectively

  • Identify potential risks and develop mitigation strategies

  • Regularly monitor and adjust the project plan as needed

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Q86. High quality of production value

Ans.

High quality of production value is essential for ensuring customer satisfaction and competitiveness in the market.

  • Implementing robust quality control measures to detect and prevent defects

  • Continuous improvement initiatives to optimize production processes

  • Investing in state-of-the-art equipment and technology

  • Training and developing skilled workforce

  • Establishing strong supplier relationships to ensure quality raw materials

  • Conducting regular audits and inspections to maintain q...read more

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Q87. Why HVAC Trick questions

Ans.

HVAC offers a challenging and rewarding career with opportunities for innovation and problem-solving.

  • HVAC allows me to work with complex systems and technologies.

  • I enjoy the problem-solving aspect of HVAC engineering.

  • HVAC offers a diverse range of projects and industries to work in.

  • I find satisfaction in creating comfortable and efficient indoor environments.

  • HVAC is a field that constantly evolves, providing opportunities for learning and growth.

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Q88. How to fire alarm systems

Ans.

Fire alarm systems are designed to detect and alert people to the presence of a fire in a building.

  • Fire alarm systems consist of smoke detectors, heat detectors, alarms, and control panels.

  • Smoke detectors sense smoke particles in the air and trigger the alarm.

  • Heat detectors detect rapid increases in temperature and activate the alarm.

  • Alarms can be audible, visual, or both to alert occupants of a fire.

  • Control panels monitor the system and can be programmed to automatically not...read more

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Q89. Why to fire alarm systems

Ans.

Fire alarm systems are crucial for early detection of fires and alerting occupants to evacuate safely.

  • Fire alarm systems provide early detection of fires, allowing for quick response and evacuation.

  • They help to minimize property damage by alerting authorities promptly.

  • Fire alarm systems are required by building codes and regulations to ensure occupant safety.

  • Regular maintenance and testing of fire alarm systems are essential to ensure they function properly in case of emergen...read more

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Q90. Refrigeration cycle?

Ans.

The refrigeration cycle is a thermodynamic process used in refrigerators and air conditioners to transfer heat from a cooler environment to a warmer one.

  • The cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

  • The refrigerant is compressed by the compressor, which raises its temperature and pressure.

  • The high-pressure refrigerant then flows to the condenser, where it releases heat and condenses into a liquid.

  • The liquid refrigerant then...read more

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Q91. Work process of entire SCM unit

Ans.

The work process of the entire Supply Chain Management (SCM) unit involves planning, sourcing, manufacturing, and delivering products to customers.

  • Planning: Forecasting demand, setting inventory levels, and creating production schedules.

  • Sourcing: Finding suppliers, negotiating contracts, and managing relationships.

  • Manufacturing: Producing goods, quality control, and optimizing production processes.

  • Delivery: Managing transportation, warehousing, and distribution to ensure time...read more

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Q92. What about market size

Ans.

Market size refers to the total potential revenue or sales volume of a specific market.

  • Market size is an important factor to consider when developing business strategies and making investment decisions.

  • It helps determine the potential demand for a product or service in a given market.

  • Market size can be measured in terms of revenue, units sold, or number of customers.

  • Understanding market size allows businesses to identify growth opportunities and assess market saturation.

  • For e...read more

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Q93. Check the temperature

Ans.

Checking the temperature is important for ensuring equipment and systems are operating within safe limits.

  • Use a thermometer to measure the temperature accurately

  • Check for any abnormal temperature readings that may indicate a problem

  • Monitor temperature trends over time to identify potential issues

  • Adjust temperature settings as needed to maintain optimal conditions

  • Examples: Checking the temperature of electrical components to prevent overheating, monitoring the temperature of H...read more

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Q94. Main part of Refrigeration cycle

Ans.

The main part of the refrigeration cycle is the compressor.

  • The compressor is responsible for pressurizing the refrigerant gas, increasing its temperature and energy.

  • It then sends the high-pressure, high-temperature gas to the condenser coil to release heat and cool down.

  • Examples of compressors include reciprocating, rotary, and scroll compressors.

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Q95. How to talk customer

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Q96. Any situation in handling

Ans.

Yes, I have experience in handling a situation where a critical quality issue was identified during production.

  • Identified root cause of the quality issue

  • Implemented corrective actions to address the issue

  • Worked closely with production team to prevent recurrence

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Q97. Db detailing with sld

Ans.

Db detailing with sld involves creating detailed database designs using structured language diagrams.

  • Db detailing involves creating detailed database designs based on requirements

  • Structured Language Diagrams (SLD) are used to visually represent the database structure

  • SLDs help in understanding the relationships between different database entities

  • Examples of SLD tools include ER diagrams and UML diagrams

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Q98. Technical fault keeping of machineries

Ans.

Regular maintenance schedule, trained staff, quick response to issues, proper documentation

  • Implement a regular maintenance schedule for all machineries

  • Ensure all staff members are properly trained to identify and address technical faults

  • Have a system in place for quick response to any technical issues that arise

  • Maintain proper documentation of all maintenance and repair activities

  • Examples: Keeping a log of maintenance activities, conducting regular inspections, providing trai...read more

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Q99. Difference between ahu and fcu

Ans.

AHU stands for air handling unit and is used to condition and circulate air, while FCU stands for fan coil unit and is used to cool or heat air in a specific space.

  • AHU is a centralized unit that conditions and circulates air throughout a building.

  • FCU is a decentralized unit that cools or heats air in a specific space, such as a room or zone.

  • AHU typically serves multiple spaces or zones, while FCU serves a single space.

  • AHU is usually larger in size and capacity compared to FCU...read more

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Q100. Define of a expansion value

Ans.

An expansion valve is a device in a refrigeration system that controls the flow of refrigerant into the evaporator.

  • Regulates the flow of refrigerant into the evaporator to maintain proper temperature and pressure

  • Helps to control the cooling capacity of the system

  • Can be thermostatic or electronic

  • Examples include thermostatic expansion valves (TXV) and electronic expansion valves (EXV)

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