# In a refrigerator, one removes heat from a lower temperature and deposits to the surroundings at a higher temperature. In this process, mechanical work has to be done, which is provided by an electric motor. If the motor is of 1kW power, and heat is transferred from  to , find the heat taken out of the refrigerator per second assuming its efficiency is 50% of a perfect engine.

Answers (1)

Here refrigerator acts as a Carnot's engine in reverse order with an efficiency

Coefficient of performance

Q2=19% WD by motor on Refrigerator

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