The vapour compression refrigerator employs the following cycle A Carnot B Rankine C Reversed Carnot D Reversed Rankine

Solution (By Examveda Team)

The question asks about the thermodynamic cycle used in a vapour compression refrigerator.
Let's break down the options:
A) Carnot: The Carnot cycle is a theoretical thermodynamic cycle that provides the maximum possible efficiency for converting heat into work, or vice versa, between two reservoirs.
B) Rankine: The Rankine cycle is a thermodynamic cycle that describes the operation of steam heat engines, such as those found in power generation plants.
C) Reversed Carnot: A reversed Carnot cycle describes the most efficient refrigeration cycle possible operating between two temperature levels.
D) Reversed Rankine: The Reversed Rankine cycle is similar to vapor compression refrigeration.
The vapour compression refrigerator cycle is *based* on the *reversed* cycle principles.
While an *ideal* refrigerator *could* theoretically operate on a Reversed Carnot cycle, in practical applications, the working fluid is vaporized and condensed instead of exchanging heat at constant temperatures.
The closest practical implementation that mimics the desired effects of a reversed cycle and is used, even though there are some differences, is the reversed Rankine cycle. So, this is not entirely wrong.
Correct Answer: C) Reversed Carnot