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Water falls from a height of 60 m at the...

Water falls from a height of `60 m` at the rate `15 kg//s` to operate a turbine. The losses due to frictional forces are `10%` of energy . How much power is generated to by the turbine? (g=10 m//s^(2))`.

A

12.3 kW

B

7.0 kW

C

8.1 kW

D

10.2 kW

Text Solution

Verified by Experts

The correct Answer is:
C
Power given to turbine `= (mgh)/t`
`= (m/t) gh = 15 xx10 xx60 = 9kW`
As `eta = 90%` hence Power `(P) = 9 xx90/100 = 8.1 `kW
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