NTPC Senior Assistant Engineer Interview Questions and Answers

Q1. What are closed loop control system
Ans. 
Closed loop control systems are feedback systems that continuously monitor and adjust the output based on the desired input.
• Closed loop control systems use feedback to maintain a desired output

• They continuously monitor the output and compare it to the desired input

• Based on the comparison, adjustments are made to maintain the desired output

• Examples include thermostat-controlled heating systems and cruise control in cars
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Q2. Details of Field instruments
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Q1. Brief discussion on c&i
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Q2. How you will handle the situations
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Q3. What are expecting from us
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Q1. Transformer releted protection and testing
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Q2. Relay protection
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Q1. Salary discussed
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Q2. All releted document
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There is general aptitude test.

Q1. There is technical as well as process questions
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Q1. This is normal round with department head.
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Q1. Salary and other discussion
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Q1. Regarding previous experience
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Q1. What are the tests conducted on power transformers and their applications?
Ans. 
Tests conducted on power transformers include insulation resistance test, turns ratio test, and power factor test.
• Insulation resistance test checks the insulation of the transformer windings.

• Turns ratio test verifies the turns ratio between primary and secondary windings.

• Power factor test measures the efficiency of the transformer in converting power.

• Other tests include winding resistance test, transformer oil testing,
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Q2. What are the specifications for a 33 kV transmission line, and how can one select the appropriate specifications?
Ans. 
Specifications for a 33 kV transmission line and how to select appropriate specifications
• Specifications for a 33 kV transmission line include conductor size, insulation type, tower height, and distance between towers

• Conductor size should be chosen based on current carrying capacity and voltage drop considerations

• Insulation type should be selected based on environmental conditions and required insulation levels

• Tower hei...read more
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Q3. What is your job profile and what responsibilities does it entail?
Ans. 
As an Assistant Manager, my job profile involves assisting the manager in overseeing daily operations, managing staff, and ensuring customer satisfaction.
• Assist manager in daily operations

• Manage staff and delegate tasks

• Ensure customer satisfaction and handle customer complaints

• Create work schedules and monitor employee performance
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Q4. What is relay coordination in electrical systems?
Ans. 
Relay coordination in electrical systems is the process of ensuring that protective relays operate in a coordinated manner to isolate faults while minimizing disruption to the system.
• Relay coordination involves setting time-current curves for protective relays to ensure that the relay closest to the fault operates first.

• It is important to coordinate relays to prevent unnecessary tripping of healthy equipment during a f...read more
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