Mechanical Engineering - Thermodynamics - Discussion
Discussion Forum : Thermodynamics - Section 3 (Q.No. 4)
4.
The change of entropy, when heat is removed from the gas, is negative.
Discussion:
14 comments Page 2 of 2.
Aniket pisal said:
8 years ago
Entropy =change in heat /temperature.
Δs=delta Q/T.
As heat is removed from gas change in heat is negative hence,
Δs= -deltaQ/T.
Hence deltaQ/T= -Δs.
ie. Entropy is negative.
Δs=delta Q/T.
As heat is removed from gas change in heat is negative hence,
Δs= -deltaQ/T.
Hence deltaQ/T= -Δs.
ie. Entropy is negative.
M S NAYAK said:
8 years ago
Entropy is never negative for irreversible process even heat is removed so,
Correct answer is B.
Correct answer is B.
(1)
Sagar singh said:
3 years ago
Entropy is always increasing when the process is irreversible.
In some cases, if heat emitting is more than heat absorbing then the entropy is negative.
In some cases, if heat emitting is more than heat absorbing then the entropy is negative.
Sunny said:
1 year ago
As temperature increases entropy increases temp decreases entropy decreases.
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