6) Which of the following are correct statements? A) In a heat pump heat is tran
ID: 1263608 • Letter: 6
Question
6) Which of the following are correct statements?
A) In a heat pump heat is transferred from a cold reservoir to a hot reservoir by the gas doing work
B) The efficiency of a heat engine is defined as the ratio of the work performed to the heat input.
C) When the first law of thermodynamics, Q = italic capital delta U-W , is applied to a gas gas taken through an isochoric process, the work done by the gas equals the heat removed.
D) A gas is allowed to expand at constant pressure as heat is added to it. This process is called isobaric.
E) For any process that may occur witihin an isolated system entropy may either remain constant or increase.
F) 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.
Explanation / Answer
A) In a heat pump heat is transferred from a cold reservoir to a hot reservoir by the gas doing wor
D) A gas is allowed to expand at constant pressure as heat is added to it. This process is called isobaric.
E) For any process that may occur witihin an isolated system entropy may either remain constant or increase.
F) 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.
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