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 2 of 3.

Mayur said:   5 years ago
Option D is correct.

Radheshyam Sharma said:   10 years ago
Pelton or impulse turbine is used for high head and low discharge.

Arun kumar said:   6 years ago
@Ajaypal.

Why the power not mentioned in watts?

Gopi said:   8 years ago
Correct answer is D.

Gopal said:   8 years ago
Perfect answer @Ajaypal.

Ashish said:   8 years ago
Calculating the specific speed, we can easily get value recommended for Peyton wheel with one jet.

Ajaypal said:   8 years ago
Power (P) in formula is in KW and not Watt.

Ajaypal said:   8 years ago
Specific Speed (Ns) is criterion for deciding the type of turbine to be used.

Ns = [N(Q)^0.5]/H^(5/4).
So, Ns = 22.13 RPM.
and it is in range of Pelton Turbine.

Sajil mp said:   8 years ago
I think answer is D.

Sandeep kumar gupta said:   9 years ago
May be the correct answer is D. Please clear my doubt with the correct explanation.


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