A Carnot engine whose low temperature reservoir is at 7°C has an effi – McqOptions

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1.	A Carnot engine whose low temperature reservoir is at 7°C has an efficiency of 50%. It is desired to increase the efficiency to 70%. By how many degrees should the temperature of the high temperature reservoir be increased [UPSEAT 2005]
A.	840 K
B.	280 K
C.	560 K
D.	380 K
Answer» E.

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