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Questions  

An engine is supposed to operate between two reservoirs at temperature 727C and 227C The maximum possible efficiency of such an engine is :

a
1/2
b
1/4
c
3/4
d
1

detailed solution

Correct option is A

η=T1−T2T1=(273+727)−(273+227)273+727=1000−5001000=12

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