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MHT CET202527 Apr 2025Evening ShiftPhysicsThermodynamicsActual

A Carnot heat engine has an efficiency of 20 % . The energy is supplied to the engine at the rate of 2 kW . The output power of the engine is

Options

  1. A300 W
  2. B400 W
  3. C500 W
  4. D600 W

Correct answer

A. 300 W

Step-by-step solution

The efficiency of a heat engine is the ratio of output power P_ out to input power P_ in , expressed as = P_ out / P_ in . Given = 0.20 and P_ in = 2000 W , rearranging yields P_ out = P_ in = 0.20 2000 = 400 W . Output power: 400 W

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