Exercise: Steam Nozzles And Turbines

Questions for: Steam Nozzles And Turbines

Parson's reaction turbine is a __________ reaction turbine.
A:
40 percent
B:
50 percent
C:
60 percent
D:
70 percent
Answer: B
No answer description is available. Let's discuss.
In a convergent divergent nozzle, the discharge depends upon the initial conditions of steam and the area of nozzle at throat.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
No answer description is available. Let's discuss.
The critical pressure ratio for initially dry saturated steam is more as compared to initially wet steam.
A:
Yes
B:
No
C:
D:
Answer: B
No answer description is available. Let's discuss.
The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)
A:
ηS = ηB x ηN
B:
ηS = ηBN
C:
ηS = ηNB
D:
none of these
Answer: A
No answer description is available. Let's discuss.
In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p2) will be
A:
3.3 bar
B:
5.46 bar
C:
8.2 bar
D:
9.9 bar
Answer: B
No answer description is available. Let's discuss.
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