Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 5 (Q.No. 30)
30.
Which of the following is the correct statement?
Discussion:
36 comments Page 3 of 4.
RAM MOHAN said:
8 years ago
Both A & D is correct.
Explanation:
A: All the reversible engines have the same efficiency.
Efficiency of Carnot=Erricson=Stirling is same.
D: Actually, Engines are designed as per reversible cycle (Theoretically), But practically that won't occur s due to (Friction, Unstrained expansion, Heat Transfer through finite difference etc).
Explanation:
A: All the reversible engines have the same efficiency.
Efficiency of Carnot=Erricson=Stirling is same.
D: Actually, Engines are designed as per reversible cycle (Theoretically), But practically that won't occur s due to (Friction, Unstrained expansion, Heat Transfer through finite difference etc).
Reshma said:
8 years ago
Yes, A is correct.
Kanji dodiya said:
9 years ago
I think it is option d) All engines are designed as reversible in order to obtain maximum efficiency.
Sharko said:
9 years ago
I think option D is correct because if you see all the heat engine diagram, they are all cyclic hence reversible. And the reason why they are made to operate in cyclic or reversible range is because you get highest efficiency in that range.
Raushan said:
9 years ago
Option D is correct. We know that Carnot engine has a maximum efficiency that is valid for reversible engine only. So, option D is correct.
AMIT said:
9 years ago
It is Options A reversible engine have constant entropy.
Neeraj said:
9 years ago
Option A is correct.
Kishor said:
9 years ago
In irreversible engine heat losses takes place. So the efficiency of Carnot is alway higher than irreversible. So option A is correct.
Arun said:
9 years ago
I think option d is correct.
Hussain said:
9 years ago
Option A is also incorrect as reversible engines operating between different temperature limit will have different efficiency.
Operating between same temperature limit is not stated.
Operating between same temperature limit is not stated.
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