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 %
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 %
Question ID - 51004 | SaraNextGen Top Answer
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 %
|
An electric pump is used to fill an overhead tank of capacity 9 |
|||||||
|
a) |
60 % |
b) |
40 % |
c) |
20 % |
d) |
30 % |
1 Answer
127 votes
Answer Key / Explanation : (d) -
(d)
Work done in raising water=mgh
Or 
Hence, efficiency=
127 votes
Answer Link
127