A heat engine is operating between ice point and steam point. Its efficiency is
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a
36.8%
b
46.8%
c
16.8%
d
26.8%
answer is D.
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Detailed Solution
efficiency of heat engine =η=1-T2T1 ;T1=100+273=373K(=temperature of source);T2=0+273=273K(=temperature of sink)η=T1−T2T1η=373−273373η=100373η=0.268percentage efficiency =η=26.8%