AP EAMCET · PHYSICS · Work Power Energy
A quarter horse power motor runs at a speed of Assuming efficiency, the work done by the motor in one rotation is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given, the power, P=14hp=7464=186.5 W Effective power⇒P'=186.6×60100=111.9 W Angular velocity, ω=2π×60060=20π Work done in one rotation=111.9×2π20π=11.19 J
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