Which of the following are correct statements? A) The efficiency of a heat engin

Question

Which of the following are correct statements?

A) The efficiency of a heat engine is defined as the ratio of the work performed to the heat input.

B) A gas is allowed to expand at constant pressure as heat is added to it. This process is called isobaric.

C) For any process that may occur witihin an isolated system entropy may either remain constant or increase.

D) In a heat pump heat is transferred from a cold reservoir to a hot reservoir by the gas doing work.

E) The coefficient of performance of a heat pump is defined as the ratio of the heat delivered to the inside and the electrical work done to move the heat.

A) The efficiency of a heat engine is defined as the ratio of the work performed to the heat input.

B) A gas is allowed to expand at constant pressure as heat is added to it. This process is called isobaric.

C) For any process that may occur witihin an isolated system entropy may either remain constant or increase.

D) In a heat pump heat is transferred from a cold reservoir to a hot reservoir by the gas doing work.

E) The coefficient of performance of a heat pump is defined as the ratio of the heat delivered to the inside and the electrical work done to move the heat.

F) When the first law of thermodynamics, Q = U-W , is applied to a gas gas taken through an isochoric process, the work done by the gas equals the heat removed.

Which of the following are correct statements? A) The efficiency of a heat engine is defined as the ratio of the work performed to the heat input. B) A gas is allowed to expand at constant pressure as heat is added to it. This process is called isobaric. C) For any process that may occur witihin an isolated system entropy may either remain constant or increase. D) In a heat pump heat is transferred from a cold reservoir to a hot reservoir by the gas doing work. E) The coefficient of performance of a heat pump is defined as the ratio of the heat delivered to the inside and the electrical work done to move the heat. F) When the first law of thermodynamics, Q = Which of the following are correct statements? U-W , is applied to a gas gas taken through an isochoric process, the work done by the gas equals the heat removed.

Explanation / Answer

A,B,C,D,E

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