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 2 of 6.
Akash said:
1 decade ago
Reversible process is one in which path of the process is known. And when equation for a process is defined that means path is also defined. So answer is false they all are reversible process.
Sudama Kumar said:
1 decade ago
I also agree all the above process is reversible.
Ramesh said:
1 decade ago
In the constant pressure process only pressure remains same in both the states and other parameters change. So obviously it is not a reversible process. Similar for all the cases.
Marwa said:
10 years ago
Please I don't understand can you justify more please.
Marwa said:
10 years ago
Please justify your answer I don't understand.
Mridul Banerjee said:
10 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.
Waseem said:
10 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.
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.
Prabhakar singh said:
9 years ago
I think the second option False is correct.
VRC said:
9 years ago
The constant pressure, constant volume and constant pvn processes are regarded as REVERSIBLE process. So, the answer is B.
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