Mechanical Engineering Exam > Mechanical Engineering Questions > Assertion (A): In vapour compression refriger...
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Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.
Reason (R): Throttling is a constant enthalpy process.
- 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 'B'. Can you explain this answer?
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Assertion (A): In vapour compression refrigeration system throttle val...
A and R are true. But R is not right reasoning for A. In vapour compression refrigeration system throttle valve is used and not expansion cylinder because the power produced by expansion cylinder is very low.
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Assertion (A): In vapour compression refrigeration system throttle val...
Throttle valve in refrigeration system
Throttle valve is an important component used in the refrigeration system to perform the function of expansion of refrigerant. It is used to reduce the pressure of the high-pressure refrigerant liquid coming from the condenser to the low-pressure refrigerant liquid before it enters the evaporator.
Constant enthalpy process
Throttling is a constant enthalpy process in which there is a reduction in the pressure of the refrigerant without any change in the enthalpy of the refrigerant. The refrigerant as it expands through the throttle valve experiences a decrease in pressure and temperature. As a result, it changes from a high-pressure liquid to a low-pressure liquid-vapour mixture.
Expansion cylinder
Expansion cylinder is another component used in the refrigeration system to perform the function of expansion of refrigerant. It is used to expand the high-pressure refrigerant liquid coming from the condenser to the low-pressure refrigerant liquid before it enters the evaporator. The refrigerant is passed through the expansion cylinder where it is allowed to expand and reduce its pressure and temperature.
Assertion and Reason
Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.
Reason (R): Throttling is a constant enthalpy process.
Both assertion and reason are individually true but the reason is not the correct explanation of the assertion. The reason given for using a throttle valve instead of an expansion cylinder is correct, but it does not explain why an expansion cylinder is not used. The real reason for using a throttle valve is that it is a simpler and more economical way to reduce the pressure of the refrigerant. Additionally, a throttle valve does not have any moving parts, which reduces the chances of mechanical failure. Therefore, option B is the correct answer.
Throttle valve is an important component used in the refrigeration system to perform the function of expansion of refrigerant. It is used to reduce the pressure of the high-pressure refrigerant liquid coming from the condenser to the low-pressure refrigerant liquid before it enters the evaporator.
Constant enthalpy process
Throttling is a constant enthalpy process in which there is a reduction in the pressure of the refrigerant without any change in the enthalpy of the refrigerant. The refrigerant as it expands through the throttle valve experiences a decrease in pressure and temperature. As a result, it changes from a high-pressure liquid to a low-pressure liquid-vapour mixture.
Expansion cylinder
Expansion cylinder is another component used in the refrigeration system to perform the function of expansion of refrigerant. It is used to expand the high-pressure refrigerant liquid coming from the condenser to the low-pressure refrigerant liquid before it enters the evaporator. The refrigerant is passed through the expansion cylinder where it is allowed to expand and reduce its pressure and temperature.
Assertion and Reason
Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.
Reason (R): Throttling is a constant enthalpy process.
Both assertion and reason are individually true but the reason is not the correct explanation of the assertion. The reason given for using a throttle valve instead of an expansion cylinder is correct, but it does not explain why an expansion cylinder is not used. The real reason for using a throttle valve is that it is a simpler and more economical way to reduce the pressure of the refrigerant. Additionally, a throttle valve does not have any moving parts, which reduces the chances of mechanical failure. Therefore, option B is the correct answer.
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Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer?
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Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. 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): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. 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): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer?.
Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. 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): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. 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): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
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Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Assertion (A): In vapour compression refrigeration system throttle valve is used and not expansion cylinder.Reason (R): Throttling is a constant enthalpy process.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 trueCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
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