A Carnot Heat Engine Runs Between a Cold Reservoir at Temperature

question 15

Multiple Choice

A Carnot heat engine runs between a cold reservoir at temperature T_L and a hot reservoir at temperature T_H.You want to increase its efficiency.Of the following, which change results in the greatest increase in efficiency? 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:

Technological Progress

The advancement and innovation in technology that leads to new devices, methods, and capabilities, improving efficiency and quality of life.

Globalization

The process by which businesses or other organizations develop international influence or start operating on an international scale, leading to increased interconnectedness and interdependence among the world's economies, cultures, and populations.

Developed Countries

Countries with strong economies and advanced technological infrastructure relative to other less industrialized nations.

Underdeveloped Countries

Nations characterized by low levels of economic productivity, poor infrastructure, and limited access to basic needs and services for their populations.