Questions
A motor pump is delivering water at certain rate. In order to increase the rate of delivery by 200 %. The power of the motor is to be increased by
detailed solution
Correct option is D
P∝n3 P2P1=n2n13=2n1n13=8 Power increases by 700%Talk to our academic expert!
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Sand drops vertically at the rate of 2 kgs–1 on to a conveyor belt moving horizontally with a velocity of 0.1 ms–1. The extra power needed to keep the belt moving is
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