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Discussion :: Refrigeration and Air Conditioning

  1. When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

    2. A.

     Operating the machine at higher speeds
    B.

     Operating the machine at lower speeds
    C.

     Raising the higher temperature
    D.

     Lowering the higher temperature

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    Answer : Option D

    Explanation :

    When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Lowering the higher temperature

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