Engineering Thermodynamics (3131905) MCQ

MCQs of Gas Power Cycles

MCQ No - 1

During which of the following process does heat rejection takes place in Carnot cycle?

(A)

isothermal expansion

(B)

isentropic expansion

(C)

isothermal compression

(D)

isentropic compression


C
MCQ No - 2

Carnot cycle has maximum efficiency for

(A)

petrol engine

(B)

diesel engine

(C)

reversible engine

(D)

irreversible engine


C
MCQ No - 3

The efficiency of the Carnot cycle may be increased by

(A)

increasing the highest temperature

(B)

decreasing the highest temperature

(C)

increasing the lowest temperature

(D)

keeping the lowest temperature constant


A
MCQ No - 4

Which is the incorrect statement about Carnot cycle?

(A)

It is used as the alternate standard of comparison of all heat engines.

(B)

All the heat engines are based on Carnot cycle.

(C)

It provides concept of maximizing work output between the two temperature limits.

(D)

all of these


B
MCQ No - 5

The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents

(A)

heat absorbed

(B)

heat rejected

(C)

either heat absorbed or rejected

(D)

none of these


C