Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 1 (Q.No. 11)
11.
With increasing flow rate, the hydraulic efficiency of a centrifugal pump
monotonically decreases.
decreases and then increases.
remains constant.
increases and then decreases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
29 comments Page 2 of 3.

Ganesh said:   3 years ago
Monotonic means there is no constant value. When the efficiency starts falling it falls sharply or continuosly in this case.
(1)

Shivam Rathor said:   1 year ago
According to me, option D is correct because when we plot a curve between flow rate and efficiency shows same.
(1)

Chirag said:   1 decade ago
Pw = (Q x H) / 3960.

Where:

Q= Flow (gallons per minute-GPM).

H= Head (feet).

Dev said:   4 years ago
Hydraulic efficiency = Total head/ideal head.

So I think it should remain same.

Abhi said:   1 decade ago
Answer would be D. It's head which decreases monotonically with flow rate.

Ajit said:   1 decade ago
What is the formula of hydraulic efficiency?

Bhashkar singh said:   6 months ago
I think option D is the correct answer.

Mongam Damodhar rao said:   1 year ago
I think option D is the correct answer.
(1)

Ram said:   4 years ago
Thanks all for explaining the answer.

Md. Atoar Rahman said:   8 years ago
Yes, The answer should be option D.


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