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A heat engine receives heat at the rate of 1500 kJ/min and gives an output of 8.2 kW, then the thermal efficiency is-

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NPCIL SA/ST ME GJ held on 07/11/2019 Shift-1
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  1. 47.20%
  2. 41%
  3. 32.80%
  4. 27.90%

Answer (Detailed Solution Below)

Option 3 : 32.80%
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Detailed Solution

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Concept:

Thermal efficiency of heat engine

Calculation:

Given: 

Heat input = 1500 kJ/min = 25 kW, Power output = 8.2 kW

 

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