L f available 6t Choice Questions: (3 tokens per each question) and reversible e

Question

L f available 6t Choice Questions: (3 tokens per each question) and reversible energy bw 4 constant pressure, which of the following statement is true (A) The vapor is hotter than the liquid and both are decreasing in termpera occurs. In a steam power plant, during the condesingofavaportt (B) The vapor is in the same temperature sas he ligua andbot condensation occurs. (C) The vapor is in the same temperature as the liquid and booh maini condensation occurs both are decre which of the following statement is true (A) The thermal efficiency of Camot cycle is independent on the tp (B) The thermal efficiency of a power cycle cannot exceed the Cam (C) The exergy efficiency of a power cycle is the same as the them which of the following statement is tue? (A) The thermal efficiencies of all the thermal cyeles when opera are the same if the cycles are reversible e that will operate in a vith a si temperatures It is possible to construct a device that operates in a yole m imacooler body to a hotter body

Explanation / Answer

4. Part A is correct because vapour is at higher temperature than liquid , that's why condensation occur.

5. Part B is correct because carnot efficiency is the highest achievable efficiency and thermal efficiency cannot exceed it.

6. Option B is wrong because it is not possible to construct such device.

Option A is correct.

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