AIPMT MAIN2008Physics-Work, Energy and Power
AIPMT MAIN 2008 Physics Power Calculation MCQ Question
Type: MCQ-numerical-Medium-Class 11
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/s²)
A
7.0 kW
B
8.1 kW
C
10.2 kW
D
12.3 kW
Correct Answer
Option B
Detailed Explanation
Power is calculated using P = 0.9 gH (dm/dt), accounting for 10% energy loss. Substituting values gives 8.1 kW.
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