Question

From a water fall, water is falling at the rate of 10 kg/s on the blades of a turbine. If the height of the fall is 10m
then the power delivered to the turbine is approximately equal to 10n
kW. Value of n is?

Answer 1

Answer:

If a mass m falls from height h and all its kinetic energy gets converted to electrical energy, then power =

t

mgh

=

t

m

gh

=100×10×100

=10

5

=100kW

Answer 2

Answer:

Power = work done / time taken

or P = mgh / t

P = (m/t) gh = 100 x 10 x 100 = 100 kW

Explanation:

Hope it helps you