Exercise: Steam Nozzles And Turbines

Questions for: Steam Nozzles And Turbines

The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
A:
same
B:
less
C:
more
D:
Answer: C
No answer description is available. Let's discuss.
The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)
A:
sin2 α
B:
cos2 α
C:
tan2 α
D:
cot2 α
Answer: B
No answer description is available. Let's discuss.
If the critical pressure ratio for steam is 0.546, then the steam is initially
A:
wet steam
B:
dry saturated steam
C:
superheated steam
D:
none of these
Answer: C
No answer description is available. Let's discuss.
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ number of stages are required.
A:
more
B:
less
C:
D:
Answer: B
No answer description is available. Let's discuss.
In a nozzle, the effect of supersaturation is to increase the dryness fraction of steam.
A:
Yes
B:
No
C:
D:
Answer: A
No answer description is available. Let's discuss.
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