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Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer
    A solar-absorption refrigeration system has generator temperature of \[87{}^\circ C\] evaporator temperature of \[-3{}^\circ C\] condenser and absorber temperatures of \[27{}^\circ C\] each, then its maximum possible COP is:

    A) 10.0                             

    B) 9.0

    C) 1.80                             

    D) 1.50

    Correct Answer: D

    Solution :

    \[COP=\frac{(87+3)}{(870-27)}=\frac{90}{60}=1.5\]


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