【Daily Question】Theoretical Foundation 2019.4.7

2019-04-07View Original

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Multiple-choice question: A Carnot heat engine operates between heat sources at two different temperatures. When the working substance is a gas, the efficiency of the engine is 42%. If a liquid is used as the working substance, then its efficiency should ( ) (A) decrease (B) increase (C) remain unchanged (D) it cannot be determined?

Reply #22019-04-07

A Carnot heat engine operates between heat sources at two different temperatures. When the working substance is a gas, the efficiency of the engine is 42%; if a liquid is used as the working substance, its efficiency should (B) (A) decrease (B) increase (C) remain unchanged (D) it cannot be determined

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【Daily Question】Theoretical Foundation 2019.4.7

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