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:

Retrieval Ability

The capacity to recall or retrieve information from memory when needed.

Primary Mental Abilities Test

A test designed to measure different types of mental abilities, such as verbal comprehension, reasoning, and numerical ability.

Louis Thurstone

Was an American psychologist who contributed significantly to psychometrics and is known for his development of the Thurstone scale for attitude measurement.

G-factor

Refers to the general intelligence factor that underlies all intelligent activity.