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NEET 2008

Exam: NEET
Year: 2008
Subject: Physics
Chapter: Work, Power and Energy

NEET 2008 · Physics · Work, Power and Energy

Water falls from a height of 60 ~m at the rate of 15 ~kg / s to...

Water falls from a height of

60 \mathrm{~m}

at the rate of

15 \mathrm{~kg} / \mathrm{s}

to operate a turbine. The losses due to frictional forces are

10 \%

of energy. How much power is generated by the turbine?

\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)

Options

A $7.0 \mathrm{~kW}$
B $8.1 \mathrm{~kW}$
C $10.2 \mathrm{~kW}$
D $12.3 \mathrm{~kW}$

Correct answer

B. $8.1 \mathrm{~kW}$

Step-by-step solution

P=0.9

\mathrm{gH} \frac{d m}{d t}

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