Clausius Inequality - MCQs with Answer

Q1. What is the criteria provided by Clausius inequality for the process which is impossible?

a. Cyclic ∫ (đQ/T) = 0
b. Cyclic ∫ (đQ/T) > 0
c. Cyclic ∫ (đQ/T) < 0
d. all above processes are possible

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Q2. How are the efficiencies of any heat engine (η) and reversible heat engine (η_R) compared, when both are operating between same heat source and same heat sink?

a. η = η_R
b. η > η_R
c. η < η_R
d. cannot say

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Q3. What is the relation between heat rejected by any heat engine (Q₂) and heat rejected by reversible heat engine (Q_2R), when both are operating between same heat source and same heat sink?

a. Q₂ = Q_2R
b. Q₂ < Q_2R
c. Q₂ > Q_2R
d. cannot say

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