First slide

Power

Question

An electric pump on the ground floor of a building takes 10 minutes 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 60%, how much electric power is consumed by the pump in filling the tank?

Moderate

A

80.33 KW
B

50 KW
C

63.33 KW
D

33.33 KW

Solution

Mass of water delivered by the pump to the tank.
$m = 30 \times 1000 / 600 k g / \sec = 50 K g / s e c$
$∴$ Power out put of the pump = m.g.h $= 50 \times 10 \times 60 W = 30 K W$
$∴$ Power input $= \frac{Power output}{Efficiency} = \frac{30}{0.6} K W = 50 K W$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App