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

---

Definitions:

Prepared Childbirth

An approach to childbirth that involves education and psychological preparation to reduce fear and pain during labor and delivery.

Lamaze

A childbirth preparation technique focusing on breathing methods, relaxation, and coping strategies for labor.

Bradley Childbirth

A method of natural childbirth that emphasizes a partnership approach to birth, education, and minimal medical intervention.

Myelin Sheath

A fatty layer that envelopes nerve fibers, facilitating the rapid transmission of electrical impulses.