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Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.
Reason (R): It reduces the work done by the compressor.
- a)Both A and R are individually true and R is the correct explanation of A
- b)Both A and R are individually true but R is not the correct explanation of A
- c)A is true but R is false
- d)A is false but R is true
Correct answer is option 'C'. Can you explain this answer?
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Assertion ( A): I n a practical vapour compression refrigerator, the v...
Assertion and Reasoning in Vapour Compression Refrigerator
Assertion: In a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.
Reasoning: It reduces the work done by the compressor.
Explanation:
A vapour compression refrigerator is a common refrigeration system that works on the principle of the Carnot cycle. It consists of various components like a compressor, condenser, evaporator, and expansion valve. The refrigerant circulates through these components and undergoes phase changes to transfer heat from the refrigerated space to the outside environment.
The assertion is true because in a practical vapour compression refrigerator, the refrigerant vapour should leave the evaporator with a definite amount of superheat. Superheat is the amount of heat added to the refrigerant vapour above its saturation temperature. It is necessary to ensure that the refrigerant vapour is completely evaporated before entering the compressor. If the refrigerant vapour enters the compressor with liquid droplets, it can cause damage to the compressor and reduce its efficiency.
The reasoning is false because superheat does not reduce the work done by the compressor. In fact, the compressor has to do more work to compress the refrigerant vapour with superheat. However, superheat does improve the efficiency of the refrigeration system by reducing the risk of liquid slugging and overheating of the compressor.
Therefore, the correct answer is option C - A is true but R is false.
Assertion: In a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.
Reasoning: It reduces the work done by the compressor.
Explanation:
A vapour compression refrigerator is a common refrigeration system that works on the principle of the Carnot cycle. It consists of various components like a compressor, condenser, evaporator, and expansion valve. The refrigerant circulates through these components and undergoes phase changes to transfer heat from the refrigerated space to the outside environment.
The assertion is true because in a practical vapour compression refrigerator, the refrigerant vapour should leave the evaporator with a definite amount of superheat. Superheat is the amount of heat added to the refrigerant vapour above its saturation temperature. It is necessary to ensure that the refrigerant vapour is completely evaporated before entering the compressor. If the refrigerant vapour enters the compressor with liquid droplets, it can cause damage to the compressor and reduce its efficiency.
The reasoning is false because superheat does not reduce the work done by the compressor. In fact, the compressor has to do more work to compress the refrigerant vapour with superheat. However, superheat does improve the efficiency of the refrigeration system by reducing the risk of liquid slugging and overheating of the compressor.
Therefore, the correct answer is option C - A is true but R is false.
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Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.Reason (R): It reduces the work done by the compressor.a)Both A and R are individually true and R is the correct explanation of A b)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is false d)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
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Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.Reason (R): It reduces the work done by the compressor.a)Both A and R are individually true and R is the correct explanation of A b)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is false d)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.Reason (R): It reduces the work done by the compressor.a)Both A and R are individually true and R is the correct explanation of A b)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is false d)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.Reason (R): It reduces the work done by the compressor.a)Both A and R are individually true and R is the correct explanation of A b)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is false d)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
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ample number of questions to practice Assertion ( A): I n a practical vapour compression refrigerator, the vapour should leave the evaporator with a definite amount of superheat.Reason (R): It reduces the work done by the compressor.a)Both A and R are individually true and R is the correct explanation of A b)Both A and R are individually true but R is not the correct explanation of Ac)A is true but R is false d)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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