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 low many degrees should the temperature of the high temperature reservoir be increased

A Carnot engine whose low temperature reservoir is at 7^@C has an efficiency of 40. It is desired to increase the efficiency to 50% . By how many degree must the temperature of the high temperature reservoir be increased?

A Carnot engine having sink at 27^@C has an efficiency of 40%.It is desired to increase the efficiency of 10%.By how many degrees the temperature of the source has to be increased?

A Carnot engine whose low-temperature reservoir is at 350 K has efficiency of 50%. It is desired to increase this to 60%. It the temperature of the low-temperature reservoir remains constant, then the temperature reservoir remains constant, then the temperature of the high-temperature reservoir must be increased by how many degrees?

A Carnot engine whose low-temperature reservoir is at 350 K has efficiency of 50%. It is desired to increase this to 60%. It the temperature of the low-temperature reservoir remains constant, then the temperature reservoir remains constant, then the temperature of the high-temperature reservoir must be increased by how many degrees?

An ideal engine whose low-temperature reservoir is at 27^@C has an efficiency of 40%. By how much should the temperature of the high-temperature reservoir be increased so as to increase the efficiency to 50% ?

An ideal engine whose low-temperature reservoir is at 27^@C has an efficiency of 40%. By how much should the temperature of the high-temperature reservoir be increased so as to increase the efficiency to 50% ?