NTPC Interview Questions, Process, and Tips

The first round included reasoning ability, verbal ability, and aptitude tests.

Q1. What is your basic introduction, and what are your thoughts on computer networking questions?
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Q2. What are Computer networks protocols. and server hardware questions
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Aptitude test its very nice test for job test class test

Aptitude test its nice attitude test job test class test work test

Assignment test is the one topic and only one subject assignment test

Q1. NTPC company have a water
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Q2. Material coal chamber
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Q3. Water cycle water supply
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Q1. Power plant related
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Q2. Theory of machine
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Theory of machine is a branch of engineering that deals with the study of machines and their mechanisms.
• Theory of machine focuses on understanding the principles behind the operation of machines.

• It involves studying the design, construction, and operation of machines.

• Examples include studying the movement of gears in a gearbox or the operation of a piston in an engine.
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Q3. Function of PA fan
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PA fan stands for Primary Air fan, which is used in power plants to supply air for combustion in the boiler.
• Supplies primary air for combustion in the boiler

• Helps in maintaining proper air-fuel ratio for efficient combustion

• Assists in controlling the temperature and pressure inside the boiler

• Improves the overall efficiency of the boiler

• Examples: FD fan in a power plant
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Q4. ID fan and pa fan difference
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ID fan is used to control the draft in the furnace while PA fan is used to supply combustion air to the furnace.
• ID fan is located at the outlet of the furnace while PA fan is located at the inlet of the furnace.

• ID fan helps in maintaining negative pressure inside the furnace while PA fan helps in supplying air for combustion.

• ID fan is used to extract flue gases from the furnace while PA fan is used to supply primary an...read more
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Q1. How many types of exchangers are there?
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Heat exchangers are devices used to transfer heat between two or more fluids, without mixing them together.
• Shell and tube heat exchanger

• Plate heat exchanger

• Double pipe heat exchanger

• Finned tube heat exchanger

• Spiral heat exchanger
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Q2. What is preeming called?
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Preeming is called grooming in the fire service.
• Preeming is the act of cleaning and maintaining equipment in the fire service.

• Grooming ensures that all equipment is in proper working order and ready for use during emergencies.

• Examples of grooming tasks include cleaning and inspecting hoses, nozzles, and other firefighting gear.
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Q3. How many types of hydrants are there?
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Different types of hydrants include wet barrel hydrants, dry barrel hydrants, and post hydrants.
• Wet barrel hydrants are commonly used in warmer climates and have the valve at the top of the hydrant.

• Dry barrel hydrants are typically used in colder climates and have the valve at the bottom of the hydrant to prevent freezing.

• Post hydrants are mounted on a post above ground level and are often used in rural areas or parks.
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Q4. How many types of couplings are there?
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Different types of couplings include rigid, flexible, sleeve, and clamp couplings.
• Rigid couplings do not allow for any misalignment between shafts

• Flexible couplings can accommodate slight misalignments and vibrations

• Sleeve couplings are simple and inexpensive, but not suitable for high torque applications

• Clamp couplings use screws or clamps to secure the connection between shafts
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Q5. How many types of hose are there?
Ans. 
Different types of hoses used in firefighting include attack hoses, supply hoses, and booster hoses.
• Attack hoses are used to deliver water or foam to extinguish fires.

• Supply hoses are used to bring water from a water source to the fire scene.

• Booster hoses are smaller in diameter and used for small fires or for mop-up operations.
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