An electric pump on the ground floor of a building takes 10 min to fill a tank of volume 30 m^3 with water. If the tank is 60 m above the ground and the efficiency of the pump is 30.

Report
Question
Power of motor P = 1/η  ρVgh/t
Where ρ=density, V=volume, h=height, t=time, and η=efficiency of motor
P = 1/0.3  (1000×30×10×60)/(10×60)
= 100kW
 
Hence the correct answer is option A which is 100kW.
solved 5
wordpress 4 mins ago 5 Answer 70 views +22

Leave a reply

 Prev question

Next question