Question

Which statement is incorrect?

(a) All reversible cycles have the same efficiency

(b) Reversible cycle has more efficiency than an irreversible one

(c) Carnot cycle is a reversible one

(d) Carnot cycle has the maximum efficiency of the cycles

Answer 1

Correct choice is (a) All reversible cycles have the same efficiency

Easiest explanation: Work done per cycle = Area of the loop representing the cycle

As different reversible cycles may have different loop areas, their efficiencies will also be different.