A Carnot Refrigerater Runs Between a Cold Reservoir at Temperature $\Delta$

question 27

Multiple Choice

A Carnot refrigerater runs between a cold reservoir at temperature T_C and a hot reservoir at temperature T_H. You want to increase its coefficient of performance. Of the following, which change results in the greatest increase in the coefficient? The value of $\Delta$ T is the same for all changes.

• A) Raise the temperature of the hot reservoir by \(\Delta\)T
• B) Raise the temperature of the cold reservoir by \(\Delta\)T
• C) Lower the temperature of the hot reservoir by \(\Delta\)T
• D) Lower the temperature of the cold reservoir by \(\Delta\)T
• E) Lower the temperature of the hot reservoir by (1/2)\(\Delta\)T and raise the temperature of the cold reservoir by (1/2)\(\Delta\)T

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Definitions:

Conditioning Experience

The process through which an association between two stimuli or a behavior and a stimulus is learned.

A State

In psychology, a temporary emotional or mental condition in contrast to more stable traits.

Intensity

The level of force, strength, or magnitude of a particular stimulus or action.

Opponent Process Theory

Proposes that emotions are regulated by mechanisms that operate in opposition to each other, restoring emotional balance after disturbances.