Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the processes:Process A: A heat sour...
Start Learning for Free
Consider the processes:
Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.
Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.
Which of the following can be concluded?
Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.
Which of the following can be concluded?
- a)Process A is less irreversible.
- b)Process B is less irreversible.
- c)Both processes accompany entropy generation with negative value.
- d)Entropy generation in process B is more than that of process A,
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ...
Thus, total entropy change for the process B is smaller and therefore it is less irreversible.
Most Upvoted Answer
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ...
Explanation:
The irreversibility of a process is measured by the entropy generated during the process. The higher the entropy generated, the more irreversible the process is.
Process A:
- Heat source temperature (Th) = 800 K
- Heat sink temperature (Tc) = 500 K
- Heat lost (Q) = 2000 kJ
The entropy change during process A can be calculated using the formula:
ΔS = Q/Tc - Q/Th
Substituting the values, we get:
ΔS = (2000/500) - (2000/800) = 0.8 kJ/K
Process B:
- Heat source temperature (Th) = 800 K
- Heat sink temperature (Tc) = 750 K
- Heat lost (Q) = 2000 kJ
The entropy change during process B can be calculated using the same formula:
ΔS = Q/Tc - Q/Th
Substituting the values, we get:
ΔS = (2000/750) - (2000/800) = 0.065 kJ/K
Conclusion:
- Process A has a higher entropy generation (0.8 kJ/K) compared to process B (0.065 kJ/K).
- Therefore, process B is less irreversible than process A.
- Option 'B' is the correct answer.
The irreversibility of a process is measured by the entropy generated during the process. The higher the entropy generated, the more irreversible the process is.
Process A:
- Heat source temperature (Th) = 800 K
- Heat sink temperature (Tc) = 500 K
- Heat lost (Q) = 2000 kJ
The entropy change during process A can be calculated using the formula:
ΔS = Q/Tc - Q/Th
Substituting the values, we get:
ΔS = (2000/500) - (2000/800) = 0.8 kJ/K
Process B:
- Heat source temperature (Th) = 800 K
- Heat sink temperature (Tc) = 750 K
- Heat lost (Q) = 2000 kJ
The entropy change during process B can be calculated using the same formula:
ΔS = Q/Tc - Q/Th
Substituting the values, we get:
ΔS = (2000/750) - (2000/800) = 0.065 kJ/K
Conclusion:
- Process A has a higher entropy generation (0.8 kJ/K) compared to process B (0.065 kJ/K).
- Therefore, process B is less irreversible than process A.
- Option 'B' is the correct answer.
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
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer?
Question Description
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct 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 Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct 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 Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer?.
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct 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 Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct 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 Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer?.
Solutions for Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. 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 Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the processes:Process A: A heat source at 800 K loses 2000 kJ of heat to sink at 500 K.Process B: A heat source at 800 K loses 2000 kJ of heat to sink at 750 K.Which of the following can be concluded?a)Process A is less irreversible.b)Process B is less irreversible.c)Both processes accompany entropy generation with negative value.d)Entropy generation in process B is more than that of process A,Correct answer is option 'B'. 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