During which phase of the Carnot cycle does the working substance do work on the

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Question: During which phase of the Carnot cycle does the working substance do work on the surroundings?

Options:

Correct Answer: Adiabatic expansion

Solution:

During the adiabatic expansion phase of the Carnot cycle, the working substance does work on the surroundings as it expands.

During which phase of the Carnot cycle does the working substance do work on the surroundings?

During which phase of the Carnot cycle does the working substance do work on the surroundings?

Step 1: Understand what the Carnot cycle is. It is a theoretical cycle that describes how heat engines work.
Step 2: Identify the four phases of the Carnot cycle: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.
Step 3: Focus on the adiabatic expansion phase. This is when the working substance (like gas) expands without exchanging heat with its surroundings.
Step 4: Recognize that during this expansion, the working substance pushes against the surroundings, which means it is doing work.
Step 5: Conclude that the working substance does work on the surroundings specifically during the adiabatic expansion phase.

Carnot Cycle Phases – The Carnot cycle consists of four phases: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.
Work Done by the System – In thermodynamics, work is done by the system when it expands against an external pressure.