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:

Outstanding Checks

Checks that do not appear on the bank statement.

Compounded Monthly

Refers to the process of calculating interest on both the initial principal and the accumulated interest from previous periods on a monthly basis.

Present Value

The current value of a deposit that is made in the present time.

Periodic Deposit Investment

An investment strategy involving regular, fixed-amount contributions into an investment account.