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Mechanical Engineering - Steam Nozzles and Turbines

Exercise : Steam Nozzles and Turbines - Section 2
21.
The ratio of the isentropic heat drop to the heat supplied, is called
reheat factor
stage efficiency
internal efficiency
Rankine efficiency
Answer: Option
Explanation:
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22.
When the cross-section of a nozzle first increases from its entrance to throat, and then decreases from its throat to exit, it is not a convergent-divergent nozzle.
Yes
No
Answer: Option
Explanation:
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23.
The efficiency ratio is the ratio of total useful heat drop to the total isentropic heat drop.
Agree
Disagree
Answer: Option
Explanation:
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24.
The purpose of governing in steam turbines is to
maintain the speed of the turbine
reduce the effective heat drop
reheat the steam and improve its quality
completely balance against end thrust
Answer: Option
Explanation:
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25.
De-Laval turbines are mostly used
where low speeds are required
for small power purposes and low speeds
for large power purposes
for small power purposes and high speeds
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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