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.

Arun kumar said:   6 years ago
@Ajaypal.

Why the power not mentioned in watts?

Kolli Dayakar said:   5 years ago
Francis turbine is used when the available head of water is 25m to 250m.

Here, the head is 150m.

60 to 300 rpm for Francis turbine.

So, I think the answer will be Francis turbine (D).

Mayur said:   5 years ago
Option D is correct.

Kajal Patil said:   5 years ago
Answer should be D.
(1)

RamKumar sen said:   5 years ago
Right, Agree @Kajal Patil.

Vinay BEL said:   5 years ago
Kaplan turbine is the right one.

Vinay said:   5 years ago
Given answer is correct. While calculating specific speed we always put power in kw.

Ganeshr said:   4 years ago
@Ajaypal

The range of specific speed is wrong.

Range for sp. Speed.
For pelton or impulse - 1-10.
Francis-10-100.
Kaplan- more than 100 rpm.

Correct ans is francis turbine 22.13 lies between 10-100.

Ganeshr said:   4 years ago
Perfect answer, thanks @Ajaypal.

Raj said:   4 years ago
The Correct answer is option B.


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