Question

if 500kg of water falls per sec from a 40m height,calculate power likely to be available assuming 70%​ efficiency

Answer 1

Answer: Power = 140000 Watt

Explanation:

Initial potential energy = mgh

= 500*10*40

=200000 J

final potential energy = 0

loss in potential energy = work done

work done = 200000J

power = work done /time

=200000/1=200000 watt

efficiency = 70%

actual power generated = 200000*0.7 watt

=140000 watt