A Refrigerator with a Coefficient of Performance 5

question 48

Multiple Choice

A refrigerator with a coefficient of performance 5.0 removes 25 kJ of heat from a cold reservoir.If this refrigerator is reversible and is run backward as a heat engine,what would be the efficiency of the heat engine?

• A)50%
• B)80%
• C)83%
• D)17%
• E)20%

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Definitions:

Format Property

An attribute in software that controls the appearance, arrangement, or layout of data and elements.

Date/Time Field

A specific type of data field used in databases and forms designed to store dates and times in a consistent format.

Number Field

A data field specifically designed to store numeric information.

Descending

In sorting, arranging items from the highest value to the lowest value.