A heat engine operates between the temperature of source T1 and sink T2 has efficiency 1/4. If T2 get half, then efficiency of the engine is a. 1/2 b. 1/4 c. 1/8 d. 5/8

A heat engine has an efficiency eta .Temperatures of source and sink are each decreased by 100 K. The efficiency of the engine

The efficiency of carnot's heat engine is 0.5 when the temperature of the source is T_(1) and that of sink is T_(2) .The efficiency of another crot's heat engine is also 0.5.the temperature of source and sink of the second engine are respecitvely

A carnot engine operating between temperatures T_(1) and T_(2) has efficiency. When T_(2) is lowered by 62K, its efficience increases to (1)/(3) . Then T_(1) and T_(2) are respectively:

The efficiency of a carnot heat engine is 0.6 when the absolute temperatures of the source and sink are T_(1) and T_(2) respectively. The efficiency of another carnot engine is also 0.6 but the source and sink temperatures are different. What are the temperatures of the source and the sink of the other engine ?

A Carnot engine operating between temperature T_1 and T_2 has efficiency 1/6. When T_2 is lowered by 62K its efficiency increase to 1/3. Then T_1 and T_2 are, respectively:

An ideal heat engine working between temperature T_(H) and T_(L) has efficiency eta . If both the temperature are raised by 100 K each the new efficiency of heat engine will be

A carnot engine operates between temperatures T and 400K(Tgt400K) . If efficiency of engine is 25% , the temperature T is :

An ideal heat engine working between temperature T_(1) and T_(2) has an efficiency eta , the new efficiency if both the source and sink temperature are doubled, will be