An electric pump is used to fill an overhead tank of capacity 9 kept at a height of 10 m above the ground .If the pump takes 5 min to fill the tank by consuming 10 KW .power the efficiency of the pump should be (Take g=10 ) |
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a) |
60 % |
b) |
40 % |
c) |
20 % |
d) |
30 % |

An electric pump is used to fill an overhead tank of capacity 9 kept at a height of 10 m above the ground .If the pump takes 5 min to fill the tank by consuming 10 KW .power the efficiency of the pump should be (Take g=10 ) |
|||||||

a) |
60 % |
b) |
40 % |
c) |
20 % |
d) |
30 % |

1 Answer

127 votes

**(d)**

Work done in raising water=mgh

Or

Hence, efficiency=

127 votes

127