Question

Carnot engine consists of?

• A. Two constant volume and two reversible adiabatic processes
• B. Two isothermal and two reversible adiabatic processes
• C. Two constant pressure and two reversible adiabatic processes
• D. One constant volume, one constant pressure and two reversible processes

Hint:

For a Carnot engine, remember that it consists of two isothermal} processes (heat intake and rejection) and two reversible adiabatic} processes (work extraction and compression), operating between two heat reservoirs.

Answer 1

The Correct Option is B

A Carnot engine operates between two heat reservoirs and is based on two isothermal processes and two adiabatic processes.
- The isothermal processes occur at constant temperature: one during heat absorption and one during heat rejection.
- The adiabatic processes occur with no heat exchange, i.e., the system undergoes a temperature change due to work done on or by the system. These processes are reversible and help the engine to convert thermal energy to mechanical work efficiently.
Thus, the correct combination for the Carnot engine is two isothermal processes and two reversible adiabatic processes.