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Q. 5

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

Rank in order, from largest to smallest, the thermal efficiencies to of the four heat engines in FIGURE Q21.5. Explain.

Rank in order from largest to smallest

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Step by Step Solution

Step :1 Introduction 

The Carnot engine is the most efficient of any heat engine that operates between two temperatures.

Heat pumps take heat from a cold place and transport it to a warmer one in the opposite direction of spontaneous heat transfer; nevertheless, a refrigerator is a piece of household equipment that is kept at a lower temperature than the outside air.

Step :2 Explanation 

Use to get ,

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