A carnot engine has an efficiency of 30% .Its efficiency is to beincreased to 50% .By what must the temperature (in K) of the source be increased if the sink is at 300K ?

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 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 50% when its sink is at 227^(@)C . What is the temperature of source

An ideal Carnot's engine whose efficiency 40% receives heat of 500K. If the efficiency is to be 50% then the temperature of sink will be

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 Carnot engine has an efficiency of 20% . When temperature of sink is reduced by 80°C its efficiency is doubled. The temperature of source is

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.

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

An ideal Carnot heat engine with an efficiency of 30% . It absorbs heat from a hot reservoir at 727^(@)C . The temperature of the cold reservoir is

The efficiency of a carnot engine is 40%, whose sink is at a temperature of 300 K. By how much should be temperature of the source be increased be get an efficiency of 60% ?