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A 10 HP motor pumps out water from a wel...

A 10 HP motor pumps out water from a well of 30 m and fills a water tank of volume 2238 L at a height of 10 m from the ground. The running time of the motor to fill the empty water tank is

A

5min

B

10min

C

15min

D

20min

Text Solution

Verified by Experts

The correct Answer is:
d
`m=vp=2238xx1=2238kg`
total lift =`h_(1)+h_(2)=30+10=40m `
Power, P=mgh/t
Time` t=mgh/p=2238xx10xx40/746`
`=1200 sec= 20 min`
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