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I applied via Referral and was interviewed in Oct 2021. There were 2 interview rounds.
Gears are used to transmit power and motion between rotating shafts. There are various types of gears used in different applications.
Spur gears are the most common type and are used in machinery and vehicles.
Helical gears are used for high-speed applications and provide smoother operation.
Bevel gears are used to transmit power between shafts that are not parallel.
Worm gears are used for high reduction ratios and are co...
I applied via Referral and was interviewed before Apr 2021. There were 3 interview rounds.
The question covers bearings types and nomenclature, steam pot and its function, and problems with compression and coating machines.
Bearings types include ball bearings, roller bearings, and plain bearings.
Nomenclature for bearings includes the bearing type, size, and series.
Steam pot is used to generate steam for various industrial processes.
Compression machine problems may include issues with the motor, belts, or val...
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posted on 9 Dec 2023
I applied via Job Portal and was interviewed in Feb 2023. There were 2 interview rounds.
HVAC maintenance process involves regular inspection, cleaning, and repair of heating, ventilation, and air conditioning systems.
Regular inspection of HVAC systems to identify any potential issues
Cleaning of air filters, ducts, and coils to ensure proper airflow and prevent contamination
Repair or replacement of faulty components to maintain system efficiency
Testing and balancing of airflows to ensure optimal performanc...
posted on 24 Nov 2021
I applied via Referral and was interviewed in Oct 2021. There was 1 interview round.
The refrigeration cycle used in a chilling plant is typically the vapor compression cycle.
The vapor compression cycle involves compressing refrigerant vapor to increase its temperature and pressure.
The high-pressure vapor then condenses into a liquid, releasing heat.
The liquid refrigerant then passes through an expansion valve, reducing its pressure and temperature.
The low-pressure liquid then evaporates, absorbing hea...
A vapour compression cycle is a process used in refrigeration systems to remove heat from a space.
The cycle consists of four main components: a compressor, a condenser, an expansion valve, and an evaporator.
The compressor takes in low-pressure refrigerant gas and compresses it to high pressure.
The high-pressure gas then flows to the condenser, where it releases heat and condenses into a high-pressure liquid.
The liquid ...
Preventive maintenance of a reactor involves regular inspection, cleaning, and replacement of parts to ensure safe and efficient operation.
Regular inspection of reactor components such as valves, pumps, and pipes
Cleaning of reactor surfaces to prevent buildup of contaminants
Replacement of worn or damaged parts to prevent equipment failure
Testing of safety systems to ensure proper function in case of emergency
Monitoring...
Utility and process equipment capacity and make
Provide details of all utility and process equipment installed in the facility
Include information on their capacity and make
Utility equipment may include HVAC, compressed air, water treatment, etc.
Process equipment may include reactors, distillation columns, pumps, etc.
Air fuel ratio in boiler is the ratio of mass of air to mass of fuel. It is maintained by adjusting the fuel and air flow rates.
Air fuel ratio is critical for efficient combustion and minimizing emissions.
The ideal air fuel ratio for a boiler is typically between 1.5 and 2.5.
To maintain the air fuel ratio, the fuel and air flow rates must be adjusted based on the boiler load and combustion conditions.
Excess air can lea...
Yes, chemical treatment is done in cooling tower to prevent scaling, corrosion and biological growth.
Chemicals like biocides, scale inhibitors and corrosion inhibitors are added to the water in cooling tower.
Biocides are used to prevent the growth of bacteria, algae and fungi.
Scale inhibitors are used to prevent the formation of mineral deposits on the tower walls and heat exchangers.
Corrosion inhibitors are used to pr...
HVAC capacity and motor size are interdependent.
The HVAC capacity is determined by the size of the space it needs to cool or heat.
The motor size is determined by the HVAC capacity and the type of system being used.
For example, a small window AC unit may have a motor size of 1/6 horsepower, while a large central AC unit may have a motor size of 5 horsepower.
It is important to ensure that the motor size is appropriate fo...
Gate valves and ball valves are two common types of valves used in industrial applications.
Gate valves have a sliding gate that controls the flow of fluid through the valve.
Ball valves have a rotating ball with a hole in the middle that controls the flow of fluid through the valve.
Gate valves are typically used for on/off control of fluid flow, while ball valves are used for throttling and control applications.
Gate val...
Yes, I have experience in boiler passing. It involves a thorough inspection of the boiler to ensure its safe and efficient operation.
Boiler passing involves a visual inspection of the boiler's exterior and interior components.
The inspection includes checking for leaks, cracks, corrosion, and other signs of wear and tear.
The boiler's safety controls, valves, and gauges are also checked to ensure they are functioning pro...
I applied via Recruitment Consulltant and was interviewed before Jun 2022. There were 5 interview rounds.
Basic questions with respect to your role
Checkpoints during breakdown
I applied via Company Website and was interviewed in Oct 2021. There were 4 interview rounds.
posted on 9 Apr 2021
I applied via Recruitment Consultant and was interviewed before Apr 2020. There were 4 interview rounds.
The power of a pump can be calculated using the formula: Power = (Flow rate x Head) / Efficiency
The power of a pump is determined by the flow rate, head, and efficiency
Flow rate is the volume of fluid passing through the pump per unit time
Head is the height difference between the inlet and outlet of the pump
Efficiency is the ratio of the actual power output to the power input
The formula to calculate power is: Power = (...
Air flow in HVAC ducting can be calculated using the formula Q = AV
Q = air flow rate in cubic feet per minute (CFM)
A = cross-sectional area of the duct in square feet
V = air velocity in feet per minute (FPM)
Air velocity can be measured using a pitot tube or an anemometer
Duct sizing and layout can affect air flow and should be considered in calculations
A reactor can be installed by following a few steps.
Choose a suitable location for the reactor
Prepare the foundation for the reactor
Install the reactor vessel and associated equipment
Connect the piping and electrical systems
Test the reactor for proper functioning
Commissioning of a reactor involves a series of tests and procedures to ensure safe and efficient operation.
Pre-commissioning checks and inspections
Functional testing of equipment and systems
Testing of safety systems
Fuel loading and reactor startup
Performance testing and optimization
Final acceptance testing
Documentation and training
Regulatory approval
Examples: Pressurized Water Reactor (PWR), Boiling Water Reactor (BWR
Condensers are used to convert high-pressure vapor into liquid form.
Condensers are used in various industries such as power plants, refrigeration systems, and chemical processing plants.
They help in increasing the efficiency of the system by reducing the pressure and temperature of the vapor.
They also help in recovering valuable materials from the vapor, such as water in a power plant.
Examples of condensers include she...
posted on 5 Dec 2021
I was interviewed before Dec 2020.
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