Mechanical Engineering Exam > Mechanical Engineering Questions > Assertion (A): When a gas is forced steadily ...
Start Learning for Free
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.
Reason (R): The gas undergoes an isentropic expansion through the porous plug.
- 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?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Assertion (A): When a gas is forced steadily through an insulated pipe...
Expansion through the porous plug is adiabatic as no heat added or rejected to the system. It is not reversible, due to large irreversibility entropy increases so it is not an isentropic process.
Most Upvoted Answer
Assertion (A): When a gas is forced steadily through an insulated pipe...
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.
Reason (R): The gas undergoes an isentropic expansion through the porous plug.
The correct answer is option C, i.e., Assertion (A) is true but Reason (R) is false.
Explanation:
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.
The enthalpy of a gas is defined as the sum of its internal energy and the product of its pressure and volume. In this case, the gas is forced steadily through an insulated pipe, which means there is no heat transfer between the gas and its surroundings. Since the pipe is insulated, the gas does not exchange any heat with the surroundings, and thus there is no change in enthalpy.
Therefore, Assertion (A) is true.
Reason (R): The gas undergoes an isentropic expansion through the porous plug.
An isentropic process is a reversible and adiabatic process, where there is no heat transfer and the entropy remains constant. In this case, the gas is forced through a porous plug, which allows the gas to expand. However, the expansion through the porous plug is not necessarily isentropic.
The porous plug allows the gas to flow through it, but it does not guarantee that the expansion is isentropic. The isentropic expansion of a gas requires specific conditions such as reversible and adiabatic processes, which may not be satisfied in this scenario.
Therefore, Reason (R) is false.
In conclusion, Assertion (A) is true because there is no change in the enthalpy of the gas when it is forced steadily through an insulated pipe. However, Reason (R) is false because the gas expansion through the porous plug is not necessarily isentropic.
Reason (R): The gas undergoes an isentropic expansion through the porous plug.
The correct answer is option C, i.e., Assertion (A) is true but Reason (R) is false.
Explanation:
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.
The enthalpy of a gas is defined as the sum of its internal energy and the product of its pressure and volume. In this case, the gas is forced steadily through an insulated pipe, which means there is no heat transfer between the gas and its surroundings. Since the pipe is insulated, the gas does not exchange any heat with the surroundings, and thus there is no change in enthalpy.
Therefore, Assertion (A) is true.
Reason (R): The gas undergoes an isentropic expansion through the porous plug.
An isentropic process is a reversible and adiabatic process, where there is no heat transfer and the entropy remains constant. In this case, the gas is forced through a porous plug, which allows the gas to expand. However, the expansion through the porous plug is not necessarily isentropic.
The porous plug allows the gas to flow through it, but it does not guarantee that the expansion is isentropic. The isentropic expansion of a gas requires specific conditions such as reversible and adiabatic processes, which may not be satisfied in this scenario.
Therefore, Reason (R) is false.
In conclusion, Assertion (A) is true because there is no change in the enthalpy of the gas when it is forced steadily through an insulated pipe. However, Reason (R) is false because the gas expansion through the porous plug is not necessarily isentropic.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Top Courses for Mechanical EngineeringView all
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?
Question Description
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)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): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)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): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)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): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)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): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Assertion (A): When a gas is forced steadily through an insulated pipe containing a porous plug, the enthalpy of gas is the same on both sides of the plug.Reason (R): The gas undergoes an isentropic expansion through the porous plug.a)Both A and R are individually true and R is the correct explanation of Ab)Both A and R are individually true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false but R is trueCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup