Entropy increase dS of the system can be expressed as

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📊 Engineering Thermodynamics

Q. Entropy increase dS of the system can be expressed as

(A) ds=ds(due to external heat interaction)- ds(due to internal irreversibility)
(B) ds=ds(due to external heat interaction)+ds(due to internal irreversibility)
(C) ds=-ds(due to external heat interaction)- ds(due to internal irreversibility)
(D) ds=-ds(due to external heat interaction)+ds(due to internal irreversibility)

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✅ Correct Answer: (B) ds=ds(due to external heat interaction)+ds(due to internal irreversibility)

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