From a waterfall, water pours down at the rate of $100 k g s^{- 1}$ on the blades of a turbine. If the height of the fall is 120 m, what is the power delivered to the turbine?

120 kW

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125 kW

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1.2 W

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120 W

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Solution

The correct option is A
120 kW

Given that, massof water falling = 100 kg
Time = 1 sec
Height, h = 120 m
$P o w e r d e l i v e r e d = \frac{m g h}{t} = 100 \times 10 \times 120$
= 120000 watt
= 120 kW

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From a waterfall, water pours down at the rate of 100 kgs−1 on the blades of a turbine. If the height of the fall is 120 m, what is the power delivered to the turbine?

The correct option is A 120 kW Given that, massof water falling = 100 kg Time = 1 sec Height, h = 120 m Powerdelivered=mght=100×10×120 = 120000 watt = 120 kW

From a waterfall, water pours down at the rate of $100 k g s^{- 1}$ on the blades of a turbine. If the height of the fall is 120 m, what is the power delivered to the turbine?

The correct option is A
120 kW

Given that, massof water falling = 100 kg
Time = 1 sec
Height, h = 120 m
$P o w e r d e l i v e r e d = \frac{m g h}{t} = 100 \times 10 \times 120$
= 120000 watt
= 120 kW