M

Mr. Dubey • 52.30K Points
Coach 

Q. What happens to the head loss when the flow rate is doubled?

(A) doubles
(B) same
(C) triples
(D) four times
Correct : Option (D)

Explanation: 
 if the flow rate is doubled, the head loss increases by a factor of four. since, the head loss is directly proportional to the square of the flow rate. option (d) is the correct option.

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