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Railways NTPC (Technical Ability) Refrigeration and Air-Conditioning Question Bank Refrigeration and Air-Conditioning

  • question_answer
    When the lower temperature is fixed COP of a refrigerating machine can be improved by:

    A) Operating the machine at higher speeds

    B) Operating the machine at lower speeds

    C) Raising the higher temperature

    D) Lowering the higher temperature

    Correct Answer: D

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