Civil Engineering - Water Supply Engineering - Discussion

Discussion Forum : Water Supply Engineering - Section 4 (Q.No. 39)
39.
If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
9 comments Page 1 of 1.

Santosh Kumar said:   3 years ago
wQH/75 is only if we take w in terms of MASS per unit volume i.e in density units.

However according to ques. w here is in weight per cubic metre thus here correct answer will be wQH/735.

Thus option (e) is correct.

Rosie said:   4 years ago
No it Should be 75 instead of 15.

Pavan said:   5 years ago
Yeah, it's WQH/75.

Not 15.

Joe said:   6 years ago
Water horse power= w*Q*H/75.
Break horse power= w*Q*H/ efficiency.

Gubendhiran said:   8 years ago
Hers, H.P = (wQH)/(0.735*efficiency of pump).

MRINAL KANTI BISWAS said:   8 years ago
If
w = unit wt of water in KN/cum.
Q = Discharge in cum/sec.
H = total head.
Then, required H.P. = wQH/0.735.
(1)

Farhan said:   8 years ago
Yes, it should be 75 in place of 15.

Sagar said:   8 years ago
Agree @Shahzeb.

It is Wqh/75.

Shahzeb said:   9 years ago
The correct formula is WQH/75.

Plese tell me if I'm wrong.

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