Mechanical Engineering - Hydraulic Machines - Discussion

Discussion Forum : Hydraulic Machines - Section 3 (Q.No. 32)
32.
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used ?
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
22 comments Page 3 of 3.

Manu M.S said:   3 years ago
N*√T/ H^5/4.
300*√ 1500/150^5/4,
300*38.7/525,
11625/525.
22.14.

The specific speed of the Pelton turbine is 1 to 30.
Francis turbine = 60 to 300.
Kaplan turbine = 300 to 1000.
So, option A is correct.

Subrata ghorai said:   3 years ago
Yes, the answer is correct, the specific speed is determines which turbine is we use 22.14 is less than 30 impulse turbine use.


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