Mechanical Engineering - Thermodynamics - Discussion


In an irreversible process, there is a

[A]. loss of heat
[B]. no loss of heat
[C]. gain of heat
[D]. no gain of heat

Answer: Option A


No answer description available for this question.

Love said: (Jan 12, 2013)  
Since in actual process we have to overcome friction.

Arvind Pandey said: (Feb 12, 2014)  
Irreversible process. An irreversible process is one in which heat is transferred through a finite temperature. Examples:-

Relative motion with friction.

Harish said: (Aug 25, 2014)  
Why there is always loss of heat, why not gain of heat?

Gani said: (Jun 17, 2016)  
For example, if you take a pipe which carrying steam, Steam will lose some heat to the atmosphere during transfer, but it cannot get heat from the atmosphere.

This is some practical example of the Irreversible process.

Vinoth said: (Jul 25, 2017)  
String of liquid in an adiabatic container is an irreversible process because due to viscosity there is heat generation.

But this heat is a gain not went out due to the adiabatic wall.

So answer is wrong.

Mahesh said: (Oct 16, 2017)  
Four of the most common causes of irreversibility are friction, unrestrained expansion of a fluid, heat transfer through a finite temperature difference, and mixing of two different substances.

Subhash Mandal said: (Nov 14, 2017)  
Friends help me, give the solution of the question of " a perfect gas at 27 C is heated till its volume is double. What is the final temperature ?

Sanjeev said: (Jan 21, 2018)  
No, the answer is correct for this question.

Because whenever a system goes through an irreversible process, it loses its ability to do work. So, for an irreversible process, there is always a loss of availability.

Ashu said: (Apr 4, 2018)  

The answer will be 600k or 327*deg;c.
use PV/T=const.

Ashu said: (Apr 4, 2018)  

The answer will be 600k or 327*deg;c.
use PV/T=const.

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