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Question: From a waterfall, water is falling down at the rate of 100 kg/s on the blades of turbine. If the hei...

From a waterfall, water is falling down at the rate of 100 kg/s on the blades of turbine. If the height of the fall is 100 m, then the power delivered to the turbine is approximately equal to

A

100 kW

B

10 kW

C

1 kW

D

1000 kW

Answer

100 kW

Explanation

Solution

P=(mt)gh=100×10×100=105 W=100 kWP = \left( \frac { m } { t } \right) g h = 100 \times 10 \times 100 = 10 ^ { 5 } \mathrm {~W} = 100 \mathrm {~kW}