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Mechanical Engineering - Steam Nozzles and Turbines

Exercise : Steam Nozzles and Turbines - Section 1
6.
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)
remains constant
decreases
increases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.
remains same
decreases
increases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)
V = 44.72 hd K
V = 44.72 K hd
V = 44.72 K hd
V = 44.72 K hd
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In a nozzle, whole frictional loss is assumed to occur between
inlet and thoroat
inlet and outlet
throat and exit
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The critical pressure ratio for initially wet steam is
0.546
0.577
0.582
0.601
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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