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Efficiency of a Carnot engine is given as 80 If the...

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Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

Answer & Solution
Correct Answer: Option D
Efficiency of a Carnot engine is given as 80% or $$\eta $$ = 0.80
If the cycle direction be reversed
The relation between the effecicy and C.O.P. is defined by formula
$${\text{C}}{\text{.O}}{\text{.P}}{\text{.}} = \frac{{1 - \eta }}{\eta } = \frac{{1 - 0.80}}{{0.80}} = 0.25$$
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1 Comment
Rajan Mech
Rajan Mech 6 years ago
Reversed Carnot cycle means refrigeration only so answer is correct
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