$A$ reversible engine and an irreversible engine are working between the same temperatures. The efficiency of the ...........
- ATwo engines are same
- BReversible engine is greater
- CIrreversible engine is greater
- DTwo engines cannot be compared
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$A$ Carnot engine whose efficiency is $40 \%$, receives heat at $500 \ K$. If the efficiency is to be $50 \%$, the source temperature for the same exhaust temperature is (in $K$)
$A$ reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by $62^\circ C$,the efficiency of the engine is doubled. The temperatures of the source and sink are:
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View Solution$A$ Carnot engine operating between temperatures $7^{\circ}C$ and a higher temperature has an efficiency of $50\%$. To increase its efficiency to $70\%$,by how much must the temperature of the source be increased in $K$?
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View Solution$A$ reversible engine has an efficiency of $\frac{1}{4}$. If the temperature of the sink is reduced by $58^{\circ}C$,its efficiency becomes double. Calculate the temperature of the sink in $^{\circ}C$.
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View SolutionThe efficiency of a Carnot engine,working between the steam point and the ice point,will be $....\,\%$ (in $.81$)
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