No real engine can have efficiency grater than that of a Carnot engine

1.	No real engine can have efficiency grater than that of a Carnot engine working between the same temperatures.Why?
Answer» A Carnot engine is an ideal heat engine form the following points of view: (i) There is absolutely no friction between the walls of cylinder and piston. (ii) The working substance is an ideal gas. In a real engine, these conditions cannot be fulfilled and hence no heat engine working between the same two temperatures can have efficiency greater than than of carnot engines.

No real engine can have efficiency grater than that of a Carnot engine working between the same temperatures.Why?

Answer»

A Carnot engine is an ideal heat engine form the following points of view:

(i) There is absolutely no friction between the walls of cylinder and piston.

(ii) The working substance is an ideal gas.

In a real engine, these conditions cannot be fulfilled and hence no heat engine working between the same two temperatures can have efficiency greater than than of carnot engines.

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No real engine can have efficiency grater than that of a Carnot engine working between the same temperatures.Why?

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