Actual Vapour Power Cycle - MCQs with Answers

Actual Vapour Power Cycle - MCQs with Answers

Q1. What is the relation between efficiency of Rankine cycle (η_Rankine) and efficiency of actual vapour power cycle (η_{Actual Cycle})?

a. (η_Rankine) = (η_{Actual Cycle})
b. (η_Rankine) > (η_{Actual Cycle})
c. (η_Rankine) < (η_{Actual Cycle})
d. none of the above

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Q2. Which loss does present in actual vapour power cycle at the exit of the boiler and at the entry of the turbine?

a. friction loss
b. constant pressure heat loss
c. both a. and b.
d. none of the above

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Q3. Considering only heat loss (Q_loss) in the expansion process at the turbine, what is the correct relation among enthalpies of steam entering and leaving the turbine (h₁ and h₂ respectively), turbine work (W_T) and heat loss (Q_loss)

a. h₁ = h₂ – W_T – Q_loss
b. h₁ = h₂ + W_T – Q_loss
c. h₁ = h₂ + W_T + Q_loss
d. none of the above

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