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प्रश्न
Define the coefficient of performance.
परिभाषा
उत्तर
It is defined as the ratio of heat extracted from the cold body (sink) to the external work done by the compressor W.
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Refrigerator
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संबंधित प्रश्न
An ideal refrigerator has a freezer at a temperature of −12°C. The coefficient of performance of the engine is 5. The temperature of the air (to which the heat ejected) is ____________.
Explain in detail the working of a refrigerator.
An ideal refrigerator keeps its content at 0°C while the room temperature is 27°C. Calculate its coefficient of performance.
