Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 1 (Q.No. 41)
41.
The constant pressure, constant volume and constant pvn processes are regarded as irreversible process.
Discussion:
54 comments Page 4 of 6.
Khushi said:
9 years ago
I think the correct answer is false.
Karan said:
9 years ago
Answer is false because it depends on the way the process is taking i.e. reversibly or irreversibly. So it can be reversible or irreversible.
Jay said:
9 years ago
Yes, the correct answer is false.
Anshul said:
9 years ago
It should be false because for air standard cycles all processes except Throttling process are reversible.
VRC said:
9 years ago
The constant pressure, constant volume and constant pvn processes are regarded as REVERSIBLE process. So, the answer is B.
Prabhakar singh said:
9 years ago
I think the second option False is correct.
Brijesh chauhan said:
9 years ago
When initial state is identical to final state it is called cycle. Above this process are hypothecal but reversible. So, answer is B.
Waseem said:
9 years ago
In short all the above-mentioned processes are irreversible in reality. But if the equation is defined as a process then it is considered reversible approximately.
Mridul Banerjee said:
9 years ago
Constant pressure, constant volume & polytropic process may be reversible & irreversible also.
In all the processes there is heat transfer to or from the system. Now if the heat transfer takes place across finite temperature difference then the process is externally irreversible.
Furthermore if there is frictional dissipation then the system is internally irreversible.
In all the processes there is heat transfer to or from the system. Now if the heat transfer takes place across finite temperature difference then the process is externally irreversible.
Furthermore if there is frictional dissipation then the system is internally irreversible.
Marwa said:
10 years ago
Please justify your answer I don't understand.
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