Question

Which statement is incorrect?

Options

• All reversible cycles have same efficiency.

• Reversible cycle has more efficiency than an irreversible one.

• Carnot cycle is a reversible one.

• Carnot cycle has the maximum efficiency in all cycles.

Answer 1

All reversible cycles have same efficiency.

Explanation:

If the source and sink temperatures are the same, then all reversible engines operate at the same efficiency. The efficiency varies depending on the temperature.