Mechanical Engineering - Steam Nozzles and Turbines - Discussion

Discussion Forum : Steam Nozzles and Turbines - Section 1 (Q.No. 4)
4.
The ratio of total useful heat drop to the total isentropic heat drop, is called
stage efficiency
internal efficiency
Rankine efficiency
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
18 comments Page 1 of 2.

Malik said:   1 decade ago
The flow through nozzles is deemed as adiabatic i.e. isentropic, because heat doesn't find time to loss in space due to very high speed of fluid, but practically there should be some heat losses, isentropic heat drop represent our assumption i.e (s=constant) & heat drop represent the very actual case,

Mvk said:   9 years ago
Is there any significance of internal efficiency in turbines?

Only stage efficiency and overall efficiency are calculated.

Chehen said:   4 years ago
Nozzle efficiency =internal efficiency =efficiency ratio=(useful heat drop/isentropic heat drop).
(3)

Somashekar S M said:   7 years ago
Isentropic efficiency is regarded as internal efficiency of steam turbine.

Bapun said:   10 years ago
Its answer in book is nozzle efficiency.

So how is the right answer?

Dhiraj said:   8 years ago
Why this is not a stage efficiency?

Please give me solution.

TANMOY said:   8 years ago
Nozzle efficiency and internal efficiently are same.

Vijay kumar said:   9 years ago
It's right answer is that nozzle efficiency.

Engr Arshad jamali said:   9 years ago
It is also called as nozzle efficiency.

Vinay BEL said:   5 years ago
Nozzle efficiency is the right answer.


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