Engineering Thermodynamics (3131905) MCQ

MCQs of Entropy

MCQ No - 1

If the #$$\oint\frac{\mathrm{δQ}}{\mathrm T}=0$$# then the heat engine cycle will be

(A)

reversible

(B)

irreversible

(C)

impossible

(D)

all of these


A
MCQ No - 2

The Clausius inequality is given by

(A)

#$$\oint\frac{\mathrm{δQ}}{\mathrm T}=0$$#

(B)

#$$\oint\frac{\mathrm{δQ}}{\mathrm T}>0$$#

(C)

#$$\oint\frac{\mathrm{δQ}}{\mathrm T}\leqslant0$$#

(D)

#$$\oint\frac{\mathrm{δQ}}{\mathrm T}\geqslant0$$#


C
MCQ No - 3

According to an increase in the entropy principle, the net entropy change is given by

(A)

#$${\left(\mathrm{dS}\right)}_{\mathrm{net}}\geqslant0$$#

(B)

#$${\left(\mathrm{dS}\right)}_{\mathrm{net}}\leq0$$#

(C)

#$${\left(\mathrm{dS}\right)}_{\mathrm{net}}<0$$#

(D)

None of these


A
MCQ No - 4

The entropy is the

(A)

point function

(B)

path function

(C)

property of system

(D)

both point function and property of a system


D
MCQ No - 5

Which of the following statement is correct?

(A)

The increase in entropy is obtained from a given quantity of heat at a low temperature

(B)

The change in entropy may be regarded as a measure of the rate of the availability or unavailability of heat for transformation into work

(C)

The entropy represents the maximum amount of work obtainable per degree drop in temperature

(D)

All of these


D