You Have a PV Diagram for a Device Going Through

question 20

Multiple Choice

You have a PV diagram for a device going through a cyclic process forming a closed loop on the diagram.How can you tell from the diagram whether the device is acting as a heat engine and not as a refrigerator?

• A)The loop is longer than it is high which means it is acting as a refrigerator.
• B)The loop is higher than it is long which means it is acting as a refrigerator.
• C)The loop proceeds clockwise which means it is acting as a heat engine.
• D)The loop proceeds counterclockwise which means it is acting as a heat engine.

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