Steam Turbines Questions and Answers – Speed Regulation and Parallel Operation

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Speed Regulation and Parallel Operation”.

1. ___________ variations can also be used in speed regulation of gas turbines.
a) Pressure
b) Fuel flow
c) Temperature
d) None of the mentioned
View Answer

Answer: b
Explanation: Fuel flow variations can be used in speed regulations in gas turbines.

2. Nozzle area variations are used in speed regulations in gas turbines.
a) True
b) False
View Answer

Answer: a
Explanation: Fuel flow variations and nozzle area variations can be used in speed regulations in gas turbines.

3. If the electrical load is greater than the speed then _________
a) Turbine shuts down
b) Speed decreases
c) Speed increases
d) None of the mentioned
View Answer

Answer: b
Explanation: When electrical load increases than the generation then turbine speed decreases.
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4. When gas turbines are operated in parallel their disturbances ________
a) Increases
b) Decreases
c) Does not change
d) None of the mentioned
View Answer

Answer: a
Explanation: When gas turbines are parallelly operated their disturbances increases.

5. In parallel operation speed governor is connected to ______________
a) digital set point
b) fuel system
c) actual speed
d) none of the mentioned
View Answer

Answer: b
Explanation: In parallel operation speed governor is connected to fuel system.

6. Microprocessor based synchronizer operates on set point.
a) True
b) False
View Answer

Answer: b
Explanation: Conventional synchronizing relay operates on set point.

7. Synchronizing relay has a time period of ___________
a) 5 minutes
b) 3 minutes
c) 6 minutes
d) 8 minutes
View Answer

Answer: c
Explanation: Synchronizing relay has a time period of 6 minutes.
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8. Microprocessor based synchronizer has a time period of _______
a) 4.5 minutes
b) 5 minutes
c) 8 minutes
d) 6 minutes
View Answer

Answer: a
Explanation: Microprocessor synchronizer is an advanced synchronizer and has lesser time than synchronizing relay.

9. Inputs given to speed governor are __________
a) Digital set point
b) Actual speed
c) Digital set point & Actual speed
d) None of the mentioned
View Answer

Answer: c
Explanation: Digital set point and actual speed are the inputs given to the speed governor.
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10. PID controller is used to make the offset ________
a) Zero
b) Positive
c) Negative
d) None of the mentioned
View Answer

Answer: a
Explanation: PID controller is used to make the offset zero.

Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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