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Question

A refrigerator has to transfer an average of 263J of heat per second from temperature −10oC to +27oC. Assuming no other power losses, the average power consumed by the refrigerator in watt is:

A
300
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B
263
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C
187
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D
35
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Solution

The correct option is D 35

COP + TLTHTL

COP = TLTHTL=7.514

QHW=7.514
W=2637.514=35walts

Hence (D) is the correct answer

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