An electric pump is used to fill an overhead tank of capacity 9 cubic m at a height of 10m 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

Options :
  1. 60%
  2. 40%
  3. 20%
  4. 30%
Answer and Explanation :-

Answer: Option 4


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