A carnot engine with its cold body at 17 C has 50% efficiency if the temperature of its hot body is now increased by 145 C, The efficiency becomes
1) 55%
2) 60%
3)40%
4) 45%

A carnot engine whose sink is at 300 K has an efficiency of 50. by how much should the temperature of source be increased so as the efficiency becomes 70% ?

A frictionless heat engine can be 100% efficient only if its exhaust temperature is

A carnot engine has efficiency of 50% when its sink is at 227^(@)C . What is the temperature of source

A carnot engine whose sink is at 290 K has an efficiency of 30%. By how much the temperature of the source be increased to have its efficiency equal to 50%, keeping sink temperature constant

A carnot engine has efficiency of 60%. If the source is at 527^(@)C , then find the temperature of sink.

A carnot engine has efficiency of 80%. If its sink is at 127^(@)C , the find the temperature of source.

A carnot engine has efficiency of 80%. If its sink is at 127^(@)C , the find the temperature of source.

A carnot engine has efficiency 1//5 . Efficiency becomes 1//3 when temperature of sink is decreased by 50 K What is the temperature of sink ?

A cannot engine has efficiency (1)/(6) . If temperature of sink is decreased by 62^(@)C then its efficiency becomes (1)/(3) then the temperature of source and sink:

A Carnot engine whose sink is at 300K has an efficiency of 40% . By how much should the temperature of source be increased so as to increase its efficiency by 50% of original efficiency.