Steam Turbines Questions and Answers – Performance Characterstics

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

1. In Compressor jet propulsion cycles pressure energy is added to the air steam.
a) True
b) False
View Answer

Answer: a
Explanation: In compressor jet propulsion cycle pressure energy is added to the air steam.

2. Pressure energy is added to the air steam at _________ pressure ratios in compressor jet propulsion cycles.
a) high
b) low
c) medium
d) none of the mentioned
View Answer

Answer: b
Explanation: Pressure energy is added to the air steam at low pressure ratios on compressor jet propulsion cycles.

3. The super critical steam first _________ while flowing through the turbine.
a) expands
b) expands & contracts
c) contracts
d) none of the mentioned
View Answer

Answer: a
Explanation: Super critical steam expands while flowing through a turbine.
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4. Turbine exhaust is connected to the ________
a) condenser
b) compressor
c) condenser & compressor
d) none of the mentioned
View Answer

Answer: a
Explanation: The turbine exhaust is connected to the condenser where heat of vaporization is used.

5. In jet propulsion cycles _______ is used as working fluid.
a) water
b) methane
c) water & methane
d) none of the mentioned
View Answer

Answer: a
Explanation: Water is used as working fluid in jet propulsion cycles.
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6. In jet propulsion cycle specific impulse is ___________
a) high
b) low
c) medium
d) none of the mentioned
View Answer

Answer: b
Explanation: In jet propulsion cycle specific impulse is low which is a major disadvantage.

7. When reactor pressure is increased above 400psi its performance is ___________
a) decreased
b) remains constant
c) increased
d) none of the mentioned
View Answer

Answer: c
Explanation: When reactor pressure is increased above 400psi its performance is increased.
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8. When reactor steam outlet pressure is increased performance is increased __________
a) Rapidly
b) Little
c) Pressure remains constant
d) None of the mentioned
View Answer

Answer: b
Explanation: When reactor steam outlet pressure is increased performance is increased very little.

9. Specific impulse in jet propulsion is ________
a) low
b) high
c) medium
d) none of the mentioned
View Answer

Answer: a
Explanation: Specific impulse was found to be low in jet propulsion cycles.
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10. When condenser pressure is increased performance is _______
a) decreased
b) increased
c) remains constant
d) none of the mentioned
View Answer

Answer: b
Explanation: When condenser pressure is increased performance also increases a little.

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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