In case of a heat pump, second law efficiency is given as

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📊 Engineering Thermodynamics

Q. In case of a heat pump, second law efficiency is given as

(A) (first law efficiency)*(1-ta/to)
(B) (first law efficiency)*(1+to/ta)
(C) (first law efficiency)*(1-to/ta)
(D) none of the mentioned

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✅ Correct Answer: (C) (first law efficiency)*(1-to/ta)

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