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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Definitions:

Bus Topology

In multiplexing, it means that no single controller networked to the data bus has more priority than another; in other words, no ECM/ECU is in charge.

Data Bus

A communication system within a computer or electronic device used for transmitting data between components.

Engine Management ECM

Engine Management Electronic Control Module, a central part of the engine management system that processes information from engine sensors to adjust fuel delivery, ignition timing, and other engine parameters for optimum performance and emissions.

Automotive

Pertaining to the design, production, and operation of motor vehicles.