Steam Turbines Questions and Answers – Effect of Nozzle Governing

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Effect of Nozzle Governing”.

1. In nozzle governing flow rate is controlled by only ______________
a) closing nozzle
b) opening nozzle
c) closing & opening nozzle
d) none of the mentioned
View Answer

Answer: b
Explanation: In nozzle governing flow rate is controlled by either opening or closing the valves.

2. ________ is regulated in nozzle governing.
a) Pressure
b) Temperature
c) Flow rate
d) None of the mentioned
View Answer

Answer: c
Explanation: In nozzle governing flow rate is controlled by opening or closing the valves instead of regulating the pressure.

3. In nozzle governing Every nozzle is controlled by a separate valve.
a) True
b) False
View Answer

Answer: a
Explanation: In nozzle governing each nozzle is controlled by a separate valve.
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4. In turbine nozzle governing is applied on _________
a) 2nd stage
b) 1st stage
c) Final stages
d) 3rd stage
View Answer

Answer: b
Explanation: In turbine nozzle governing is applied in first stage and remaining stages will be un affected.

5. Remaining stages of the turbine other than first stage remains ____________ in nozzle governing.
a) unaffected
b) affected
c) unaffected & affected
d) none of the mentioned
View Answer

Answer: a
Explanation: Nozzle governing is applied only in first stage and remaining stages are unaffected as no pressure regulation is applied.
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6. ________ boiler pressure can be obtained from nozzle governing.
a) Depends on the load
b) Partial
c) Full
d) None of the mentioned
View Answer

Answer: c
Explanation: Full boiler pressure can be obtained as no pressure regulation is done.

7. _________ boiler temperature can be utilized by this nozzle governing.
a) Full
b) Partial
c) Depends on the load
d) None of the mentioned
View Answer

Answer: a
Explanation: As there is no pressure regulation temperature also does not change and hence full boiler temperature can be used.
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8. In subsequent stages of turbine pressure regulation is done.
a) True
b) False
View Answer

Answer: b
Explanation: In subsequent stages of turbine pressure regulation is not done.

9. In nozzle when entropy ___________ supersaturation occurs.
a) increases
b) decreases
c) remains constant
d) none of the mentioned
View Answer

Answer: a
Explanation: In nozzle supersaturation causes an increase in entropy.
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10. When mass flow rate is maximum nozzle chokes.
a) True
b) False
View Answer

Answer: a
Explanation: Nozzle chokes when mass flow rate is maximum during critical conditions.

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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