70+ SG Healthcare Interview Questions and Answers

Neutral is grounded in star connected transformer for safety and to limit voltage rise.

• Grounding neutral limits voltage rise in case of unbalanced loads.

• It provides a path for fault current to flow, which helps in detecting and isolating faults.

• It reduces the risk of electric shock to personnel and damage to equipment.

• In some countries, it is a legal requirement to ground the neutral in electrical systems.

• Example: In a 3-phase, 4-wire system, the neutral is grounded to limit ...read more

In Star connection, line voltage is equal to the square root of 3 times phase voltage.

• Line voltage is the voltage between any two line conductors in a three-phase system.

• Phase voltage is the voltage between any line conductor and the neutral point in a three-phase system.

• In a Star connection, all three phases are connected to a common neutral point.

• The relationship between line voltage and phase voltage in Star connection is given by the formula: Line voltage = √3 x Phase vol...read more

Safety refers to measures taken to prevent accidents and injuries in the workplace. The Factory Act is a legislation that ensures the safety and welfare of workers in factories. Working process in construction sites involves various safety protocols and procedures.

• Safety involves implementing measures to prevent accidents and injuries in the workplace.

• The Factory Act is a legislation that sets out regulations for the safety and welfare of workers in factories.

• Working process ...read more

Completion system is a process that ensures all components of a project are fully functional and ready for operation.

• Completion system involves testing and verifying all equipment, systems, and processes.

• It includes conducting inspections, functional tests, and performance tests.

• Documentation and certification of completion are important aspects of the process.

• Examples of completion systems include commissioning a power plant, certifying a building for occupancy, or launching...read more

Yes, electrical load calculation is the process of determining the amount of power that a building or electrical system requires.

• Electrical load calculation involves considering the power requirements of various electrical devices and appliances in a building or system.

• Factors such as voltage, current, and power factor are taken into account during the calculation.

• Load calculation helps in determining the appropriate size of electrical equipment, such as transformers, circuit...read more

As a Service Manager, I can generate service revenue for S&W by offering maintenance contracts, upgrades, and training services.

• Offering maintenance contracts for regular servicing and repairs

• Providing upgrades to improve equipment performance

• Offering training services to improve customer knowledge and skills

• Selling spare parts and consumables

• Providing technical support and troubleshooting services

Before casting a tower foundation, several things need to be checked to ensure its stability and durability.

• Check the soil condition and bearing capacity

• Ensure proper reinforcement and formwork

• Verify the dimensions and alignment of the foundation

• Check for any obstructions or utilities in the excavation area

• Ensure proper curing of the concrete

• Verify compliance with local building codes and regulations

The system is handed over to the client through a structured process of testing, documentation, and training.

• The system is thoroughly tested to ensure it meets all requirements and specifications

• Documentation is provided to the client, including user manuals and technical specifications

• Training is provided to the client's staff to ensure they can effectively use and maintain the system

• A formal acceptance process is conducted to ensure the client is satisfied with the system b...read more

Yes, logistic regression can be used for multi class classification by using techniques like one-vs-rest or softmax.

• Logistic regression is typically used for binary classification, but it can be extended to handle multiple classes.

• One common approach is to use one-vs-rest (OvR) strategy, where a separate binary logistic regression model is trained for each class.

• Another approach is to use softmax regression, which is a generalization of logistic regression to multiple classes...read more

I am highly skilled in handling complaints related to air conditioners.

• I have extensive knowledge of air conditioning systems and their common issues.

• I am experienced in troubleshooting and resolving air conditioner complaints.

• I have excellent communication skills to effectively address customer concerns.

• I am adept at managing customer expectations and providing satisfactory solutions.

• I am familiar with industry standards and regulations for air conditioner maintenance and re...read more

I have extensive experience in commissioning activities in the Oil&Gas field.

• I have worked on multiple commissioning projects in the Oil&Gas industry.

• I have a deep understanding of the commissioning process and its importance in ensuring safe and efficient operations.

• I have successfully led commissioning teams and coordinated activities to ensure timely completion.

• I have experience in troubleshooting and resolving commissioning issues to minimize downtime.

• I have knowledge of ...read more

Pump head loss calculation parameters include friction loss, elevation change, velocity head, and fittings.

• Friction loss due to pipe roughness

• Elevation change between inlet and outlet

• Velocity head due to fluid velocity

• Losses from fittings like elbows, tees, and valves

Primary pump is the main pump responsible for the majority of the pumping work, while secondary pump is a backup pump used in case the primary pump fails.

• Primary pump is the main pump in a system, while secondary pump is a backup pump.

• Primary pump is responsible for the majority of the pumping work, while secondary pump is used only when needed.

• Examples: In a heating system, the primary pump circulates hot water through the system, while the secondary pump kicks in if the pri...read more

Chilled water pipe size requirements depend on flow rate, pressure drop, material, insulation, and system design.

• Flow rate: Determine the required flow rate of chilled water in the system.

• Pressure drop: Calculate the pressure drop to ensure efficient operation.

• Material: Select appropriate pipe material based on temperature and pressure requirements.

• Insulation: Insulate the pipes to prevent heat gain or loss.

• System design: Consider the layout and configuration of the system fo...read more

Transformer losses refer to the energy dissipated in a transformer during its operation.

• Transformer losses include copper losses and iron losses.

• Copper losses occur due to the resistance of the transformer windings.

• Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.

• Copper losses can be minimized by using larger conductor sizes and reducing the resistance of windings.

• Iron losses can be reduced by using high-quality magneti...read more

A control module is a device that manages and regulates the operation of a system, while a relay module is a device that controls the flow of electrical current.

• Control modules are responsible for monitoring and adjusting various parameters in a system, such as temperature, pressure, or speed.

• Relay modules act as switches that open or close circuits to control the flow of electrical current.

• Control modules are typically more complex and have advanced functionalities, while re...read more

Testing and commissioning of TVS system involves various activities to ensure its proper functioning.

• Verification of wiring and connections

• Functional testing of individual components

• Integration testing of the entire system

• Performance testing under different load conditions

• Verification of safety features

• Documentation of test results and commissioning procedures

List is mutable, Tuple is immutable in Python.

• List can be modified after creation, Tuple cannot be modified.

• List is defined using square brackets [], Tuple is defined using parentheses ().

• List is used for collections of items that may change, Tuple is used for fixed collections.

• Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)

I will isolate the transformer and investigate the cause of the differential trip.

• Isolate the transformer from the system

• Check the differential relay settings and wiring

• Inspect the transformer for any physical damage or oil leaks

• Check the oil level and quality

• Investigate the cause of the differential trip

• Take corrective actions to prevent future trips

CT and PT are connected in circuit to measure current and voltage respectively.

• CT is connected in series with the load to measure current

• PT is connected in parallel with the load to measure voltage

• CT and PT are used together to measure power in a circuit

• The ratio of CT and PT is important for accurate measurement

The system architecture of FAS (Fire Alarm System) and BMS (Building Management System) involves the integration of various components and subsystems to ensure efficient monitoring and control of fire safety and building operations.

• FAS system architecture typically includes fire detectors, control panels, notification devices, and communication interfaces.

• BMS system architecture typically includes sensors, controllers, actuators, and a central management system.

• Both systems m...read more

BOQ quantity for FAS system can be calculated by determining the required components and their quantities.

• Identify the components needed for the FAS system

• Determine the quantity of each component required based on project specifications

• Consider factors such as system size, layout, and design requirements

• Calculate the total quantity by summing up the quantities of all components

• Example: If the FAS system requires 10 smoke detectors and 5 control panels, the BOQ quantity would ...read more

Risk assessment is the process of identifying, evaluating, and prioritizing potential risks to determine appropriate control measures.

• Risk assessment involves identifying hazards and potential consequences.

• It evaluates the likelihood and severity of each risk.

• Prioritization helps in determining which risks require immediate attention.

• Control measures are implemented to mitigate or eliminate identified risks.

• Examples include conducting workplace inspections, analyzing accident...read more

Trapezoidal foundation quantity is calculated by finding the average width and multiplying it by the length and depth.

• Measure the length and depth of the foundation

• Measure the width at both ends and find the average width

• Multiply the average width by the length and depth to get the volume

• Calculate the quantity by multiplying the volume with the unit weight of concrete

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

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

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

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

• The liquid refrigerant passes through th...read more

Centrifugal blowers are commonly used in AHUs for their efficiency and ability to handle high volumes of air.

• Centrifugal blowers are preferred for AHUs due to their ability to handle high volumes of air efficiently.

• They are more energy efficient compared to other types of blowers.

• Examples of centrifugal blowers commonly used in AHUs include forward curved, backward inclined, and airfoil designs.

AHU valve connection refers to the connection of valves in an air handling unit for controlling the flow of air.

• AHU valve connection is essential for regulating the flow of air in an air handling unit.

• Valves are typically connected to the AHU ductwork to control the amount of air entering or exiting the unit.

• Properly connected valves ensure efficient operation of the AHU system.

• Examples of AHU valves include damper valves, butterfly valves, and ball valves.

Hot work refers to any activity that involves open flames or generates heat and sparks.

• Examples include welding, cutting, brazing, soldering, grinding, and using a torch.

• Hot work requires a permit and must be conducted in a designated area with proper ventilation and fire safety measures.

• Workers must wear appropriate personal protective equipment (PPE) and be trained in hot work safety procedures.

• Hot work can pose a serious fire hazard and must be carefully monitored and cont...read more

Decorators in Python are functions that modify the behavior of other functions.

• Decorators are denoted by the @ symbol followed by the decorator name.

• They are commonly used for logging, timing, authentication, etc.

• Decorators can be used to add functionality to existing functions without modifying their code.

Height work refers to any work that is performed at a height above ground level.

• Examples of height work include working on rooftops, climbing ladders, and working on scaffolding.

• Height work requires proper safety equipment such as harnesses, helmets, and safety ropes.

• Workers performing height work should be trained in proper safety procedures and should be aware of the risks involved.

• Height work can be dangerous and can result in serious injury or death if proper safety measu...read more

The general payment terms vary depending on the vendor and the type of product or service being purchased.

• Payment terms can range from net 30 to net 90 days

• Some vendors may require partial payment upfront

• Other vendors may offer discounts for early payment

• Payment terms should be negotiated and agreed upon before making a purchase

Types of pumps include centrifugal pumps, reciprocating pumps, and rotary pumps.

• Centrifugal pumps use centrifugal force to move fluid through a system.

• Reciprocating pumps use a piston or diaphragm to create pressure and move fluid.

• Rotary pumps use rotating mechanisms to transfer fluid.

• Other types of pumps include gear pumps, peristaltic pumps, and vane pumps.

A chilled water system is a cooling system that uses chilled water to remove heat from a building or process.

• Chilled water systems use water as a cooling medium.

• They typically consist of a chiller, chilled water pumps, and a distribution system.

• Chilled water is circulated through coils or heat exchangers to cool air or equipment.

• Chilled water systems are commonly used in large commercial buildings, data centers, and industrial processes.

• Examples of chilled water systems inclu...read more

Cold work refers to any work that is done on a metal at room temperature or below.

• Cold work can include processes like bending, punching, or rolling.

• It can increase the strength and hardness of the metal, but can also make it more brittle.

• Cold work is often used in the manufacturing of metal products like pipes, wires, and sheet metal.

• It is important to take safety precautions when performing cold work, as it can create sharp edges and flying debris.

The M30 concrete compressive strength is typically around 30 MPa.

• M30 concrete is a mix design with a characteristic compressive strength of 30 MPa.

• It is commonly used in construction for various structural elements.

• The strength of M30 concrete can vary based on factors like water-cement ratio, curing conditions, and quality of materials.

A lambda function is a small anonymous function defined without a name.

• Lambda functions are used for creating small, one-time use functions.

• They can take any number of arguments, but can only have one expression.

• Lambda functions are often used in conjunction with higher-order functions like map, filter, and reduce.

• Example: lambda x: x*2 defines a lambda function that doubles the input x.

Solar PV modules convert sunlight into electricity using photovoltaic effect.

• Solar PV modules consist of multiple solar cells connected in series and parallel.

• Each solar cell is made of semiconductor material, usually silicon.

• When sunlight hits the solar cell, it excites the electrons in the semiconductor material, creating a flow of electricity.

• The electricity generated by the solar cells is direct current (DC), which is then converted to alternating current (AC) using an in...read more

Supporting BIM files on the construction site involves ensuring access, coordination, and utilization of the digital models for efficient project management.

• Provide training to on-site staff on how to access and use BIM files

• Ensure all stakeholders have access to the most updated BIM files

• Coordinate with subcontractors to integrate their models into the overall BIM model

• Use BIM for clash detection and coordination meetings to resolve issues before construction begins

Hazards refer to potential sources of harm or danger that can cause injury, illness, or damage to property.

• Hazards can be physical, chemical, biological, or psychological in nature.

• Examples of hazards include slippery floors, toxic chemicals, infectious diseases, and workplace stress.

• Identifying and assessing hazards is an important part of ensuring safety in any environment.

• Effective hazard control measures can help to prevent accidents and injuries.

• Hazards can also be class...read more

Renewable energy offers numerous advantages over traditional energy sources.

• Reduces greenhouse gas emissions and mitigates climate change

• Diversifies energy sources and reduces dependence on fossil fuels

• Creates jobs and stimulates economic growth

• Improves energy security and reduces geopolitical conflicts

• Promotes sustainable development and protects the environment

• Provides access to electricity in remote areas

• Offers long-term cost savings and stable energy prices

• Enhances public...read more

Built-in data refers to pre-existing datasets or information that is already included in a software or system.

• Built-in data is typically provided by the software or system for analysis or processing.

• Examples include sample datasets in statistical software like R or Python libraries like scikit-learn.

• Built-in data can also refer to default datasets in databases or data warehouses.

• It can save time and effort by providing ready-to-use data for analysis or testing.

Risk refers to potential harm or loss. Mitigations are actions taken to reduce or eliminate the risk.

• Identify potential risks and their impact

• Develop a plan to mitigate risks

• Implement the plan and monitor its effectiveness

• Regularly review and update the plan

• Examples: Risk of theft - install security cameras, Risk of low sales - increase marketing efforts

AHU components refer to the various parts of an Air Handling Unit that work together to regulate and circulate air in a building.

• Filters - to remove dust and particles from the air

• Coils - for heating or cooling the air

• Fans - to circulate the air

• Dampers - to control the flow of air

• Humidifiers/dehumidifiers - to adjust the humidity levels

The chiller connection refers to the method by which a chiller unit is connected to a building's HVAC system.

• Chiller connection typically involves piping to transport chilled water from the chiller to the building's air handling units.

• The connection may also include electrical wiring for power supply and control signals.

• Proper chiller connection is crucial for efficient cooling and proper functioning of the HVAC system.

Power is the rate at which energy is transferred, while energy is the ability to do work.

• Power is measured in watts, while energy is measured in joules.

• Power is the rate at which energy is used or transferred, while energy is the capacity to do work.

• A light bulb may have a power rating of 60 watts, but the energy it consumes over time is measured in watt-hours.

• Energy can exist in different forms, such as kinetic, potential, thermal, and chemical energy.

• Power can be calculated...read more

IGBT stands for Insulated Gate Bipolar Transistor, a power semiconductor device used for switching and amplification of electrical power.

• IGBT is a three-terminal device with a collector, emitter, and gate.

• It combines the advantages of MOSFET and BJT transistors.

• It is commonly used in high power applications such as motor drives, power supplies, and renewable energy systems.

• IGBTs have low on-state voltage drop and high switching speed.

• Examples of IGBTs include Mitsubishi IGBT ...read more

LTI stands for Lost Time Injury, which refers to a work-related injury or illness that results in time off from work.

• LTI is a common safety metric used in workplaces to track and analyze workplace injuries and illnesses.

• It is calculated by dividing the number of lost workdays by the total number of hours worked.

• LTI is an important indicator of workplace safety and can help identify areas for improvement.

• For example, if a company has a high LTI rate, it may indicate a need for...read more

Excavation refers to the process of digging or removing earth or other materials from the ground.

• Excavation is commonly used in construction and mining industries.

• It involves the use of heavy machinery such as excavators, bulldozers, and backhoes.

• Excavation can be done for various purposes such as building foundations, laying pipelines, or creating underground tunnels.

• Safety measures such as shoring, sloping, and benching are important to prevent cave-ins and other accidents....read more

Relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.

• Relays are used to control high voltage or high current circuits with low voltage signals.

• They are commonly used in industrial automation, automotive applications, and household appliances.

• Relays can be classified into different types based on their construction and operation, such as electromagnetic relays, solid-state relays, and thermal relays.

• Electromagnetic relays ...read more

Slump cone top diameter is the diameter of the top opening of a slump cone used to measure the consistency of concrete.

• Slump cone top diameter is typically around 4 inches.

• It is an important factor in determining the workability of concrete.

• The slump cone test involves filling the cone with concrete, then lifting the cone to see how much the concrete slumps.

• A larger top diameter of the slump cone indicates a higher workability of the concrete.

CAD is 2D design software while BIM is 3D modeling software with added information for building components.

• CAD (Computer-Aided Design) is primarily used for 2D drafting and design.

• BIM (Building Information Modeling) is used for 3D modeling with added information about building components such as materials, dimensions, and costs.

• CAD focuses on individual drawings or components, while BIM allows for a more holistic view of the entire building project.

• BIM enables collaboration a...read more

Quality lab and site test of concrete involves testing the strength, durability, and consistency of concrete samples.

• Quality lab tests include compressive strength test, slump test, air content test, and temperature test.

• Site tests involve sampling concrete from the construction site, conducting field tests like slump test and air content test, and monitoring curing conditions.

• Quality engineers ensure that concrete meets specified standards and requirements for construction p...read more

Solar PV modules are used in solar fields to convert sunlight into electricity.

• Solar PV modules consist of multiple solar cells that generate direct current (DC) electricity when exposed to sunlight.

• These modules are typically made of silicon, but can also be made of other materials like thin-film solar cells.

• Solar PV modules are connected in series and parallel to form solar arrays, which can generate higher voltages and currents.

• The electricity generated by solar PV modules...read more

Calculation of ducting in HVAC engineering involves determining the size, shape, and layout of ducts to ensure proper airflow and ventilation.

• Calculate the required airflow rate based on the heating or cooling load of the space

• Determine the friction loss in the ducts using the Darcy-Weisbach equation

• Select the appropriate duct size based on the desired air velocity and pressure drop

• Consider factors such as duct material, insulation, and fittings

• Design the duct layout to minim...read more

Prepare an rvt family by creating a new family template, setting up parameters, adding necessary components, and testing for functionality.

• Create a new family template in Revit

• Set up parameters for the family

• Add necessary components such as geometry, dimensions, and materials

• Test the family for functionality within a project

A work permit is a document that authorizes a person to perform a specific job or task in a designated area.

• Work permits are used to ensure that work is carried out safely and efficiently.

• They are typically issued by a supervisor or manager and must be obtained before starting work.

• Work permits may include information such as the type of work to be performed, the hazards involved, and the safety precautions that must be taken.

• Examples of work permits include hot work permits,...read more

A power transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Power transformers are used to step up or step down voltage levels in electrical power transmission and distribution systems.

• They consist of a primary winding, a secondary winding, and a magnetic core.

• When an alternating current flows through the primary winding, it creates a magnetic field that induces a voltage in the secondary winding....read more

Procurement process involves identifying needs, selecting suppliers, negotiating contracts, and receiving goods/services.

• Identify the need for goods/services

• Determine the specifications and quantity required

• Select potential suppliers and issue a request for proposal (RFP)

• Evaluate proposals and select a supplier

• Negotiate contract terms and conditions

• Place the order and receive the goods/services

• Ensure timely payment and maintain supplier relationships

Total enf for a certain conditions refers to the total energy consumption for specific circumstances.

• Calculate the total energy consumption by summing up the individual energy consumption values for each condition.

• Consider factors such as duration, power rating, and efficiency when calculating total energy consumption.

• Example: Total energy consumption for a week of running a 100W light bulb for 8 hours a day.

MSDS stands for Material Safety Data Sheet.

• MSDS is a document that provides information about the hazards of a particular substance or product.

• It includes information on the chemical composition, physical properties, and safe handling procedures.

• MSDS is required by law for all hazardous substances and products.

• It is important for workers to have access to MSDS to ensure their safety in the workplace.

Developed a new power distribution system for a large manufacturing plant, resulting in a 20% increase in efficiency.

• Designed and implemented a new power distribution system for a large manufacturing plant

• Collaborated with a team of engineers and technicians to ensure successful installation and operation

• Resulted in a 20% increase in efficiency and significant cost savings for the company

The top diameter of a slump cone is typically 4 inches.

• The top diameter of a slump cone is usually 4 inches.

• The slump cone is used to measure the consistency of fresh concrete.

• The top diameter of the slump cone affects the flow of the concrete mix.

• A larger top diameter will result in a higher slump value.

M25 concrete has a compressive strength of 25 MPa (mega pascals).

• M25 concrete is a mix of 1:1:2 cement, sand, and aggregate.

• It is commonly used in construction for foundations, columns, and beams.

• The strength of M25 concrete can be increased by using additives like fly ash or silica fume.

• The curing time for M25 concrete is typically 28 days.

• The compressive strength of M25 concrete is tested using a compression testing machine.

A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle.

• Chillers are commonly used in air conditioning systems to cool buildings or industrial processes.

• They work by transferring heat from the liquid being chilled to a separate fluid, which is then circulated through a heat exchanger to cool it down.

• Chillers can be water-cooled or air-cooled, depending on the application and available resources.

Thermo-Mechanically Treated

• TMT stands for Thermo-Mechanically Treated

• TMT bars are commonly used in construction for reinforcement

• The process involves heating the steel bars and then rapidly cooling them to increase their strength