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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 of 15 kg/s to operate a turbine. The losses due to frictional forces are 10% of energy. How much power is generated 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
Mass of water falling/second = 15 kg/s.
`h = 60 m, g = 10 m//s^2` , loss = 10% ie., 90% is used
Powre generated = `15 xx 10 xx 60 xx 0.9 = 8100 W = 8.1 kW`.
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Knowledge Check

  • 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)) .

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    `12.3 kW`
    D
    `7.0 kW`

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