1000+ Power Plant Engineering MCQ Questions and Answers - 2

Question: 6

The flow of steam in a nozzle is subsonic at

(A) convergent portion

(B) divergent portion

(C) convergent divergent portion

(D) throat

Ans: B

divergent portion

Question: 7

Bomb calorimeter is used to determine

(A) lower calorific value at constant pressure

(B) higher calorific value at constant pressure

(C) lower calorific value at constant volume

(D) higher calorific value at constant volume

Ans: D

higher calorific value at constant volume

Question: 8

Hard coke is used in

(A) blast furnace

(B) domestic use

(C) locomotives

(D) thermal power plant

Ans:A

blast furnace

Question: 9

The change in internal energy in steam engines equals to

(A) change in enthalpy

(B) work done during adiabatic expansion

(C) work done during compression

(D) work done during the rankine cycle

Ans: B

work done during adiabatic expansion

Question: 10

A wet vapour can be completely specified by

(A) pressure and dryness fraction

(B) dryness fraction only

(C) specific volume only

(D) temperature only

Ans: A

pressure and dryness fraction

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