One mole of ideal gas undergoes cycle: isothermal expansion at T 1 , then cooling to T 2 , then isothermal compression, then heating. This is a:

One mole of ideal gas undergoes cycle:…

Answer: Carnot cycle.

A Carnot cycle
B Rankine cycle
C Otto cycle
D Diesel cycle

Correct answer: A. Carnot cycle

Explanation: Carnot cycle consists of two isothermal processes (at T<sub>1</sub> and T<sub>2</sub>) and two adiabatic processes.

The Carnot cycle alternates two isothermal steps (heat absorbed at T_H, released at T_C) with two adiabatic steps (no heat exchange); the enclosed loop area equals the net work output, and η = 1−T_C/T_H is the maximum possible efficiency between those two temperatures.

Concept context

Laws of thermodynamics, heat engines, entropy, and gas processes.

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One mole of ideal gas undergoes cycle: isothermal expansion at T<sub>1</sub>, then cooling to T<sub>2</sub>, then isothermal compression, then heating. This is a:

Concept context

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