Mechanical Engineering - Hydraulic Machines - Discussion

Discussion Forum : Hydraulic Machines - Section 2 (Q.No. 49)
49.
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit discharge of wheel is
0.25 m3/s
0.5 m3/s
1.5 m3/s
2.5 m3/s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Pratik said:   5 years ago
@Ram Kumar

1.75 was unit power, unit speed is 20 rpm, unit discharge is 0.25.

MADHU said:   7 years ago
Thank you @Saurabh Yadav.

Saurabh yadav said:   9 years ago
Unit discharge = Q/(H)^(1/2).

Q = 2500 Lit. = 2.5 m^3.

Unit discharge = 2.5/(100)^(1/2) = 0.25.

RAM KUMAR said:   10 years ago
In some other case answer as 1.75, Its a right or wrong?

Viettan K said:   10 years ago
Please explain more detail what unit discharge is?

Saurabh said:   1 decade ago
Unit discharge(Q') = Q/H^2.
So Q'= 2500/(100^2).

Therefore,
Q' = 0.25(B).

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