Question

The Carnot cycle is:

• A. Reversible and ideal
• B. Irreversible
• C. Isobaric
• D. Isochoric

Hint:

The Carnot cycle sets an upper limit on the efficiency of heat engines by using reversible processes and operating between two heat reservoirs, making it the most efficient cycle.

Answer 1

The Correct Option is A

The Carnot cycle is a theoretical thermodynamic cycle that defines the maximum possible efficiency of a heat engine operating between two heat reservoirs. It consists of two isothermal processes (one for heat absorption and one for heat rejection) and two adiabatic processes (for work extraction and compression). The Carnot cycle is reversible and ideal, meaning that it is carried out in such a way that there are no losses due to friction, turbulence, or other irreversible effects.
- Irreversible processes involve some form of dissipation, such as friction or heat loss, and do not describe the Carnot cycle.
- Isobaric refers to processes that occur at constant pressure, which is not the defining feature of the Carnot cycle.
- Isochoric refers to processes that occur at constant volume, which is also not applicable to the Carnot cycle.
Thus, the correct answer is that the Carnot cycle is Reversible and ideal.