Engineering Thermodynamics (3131905) MCQ

MCQs of Second Law of Thermodynamics

MCQ No - 1

According to Kelvin-Planck's statement of the second law of thermodynamics

(A)

it is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

(B)

it is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

(C)

it is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body

(D)

none of these


A
MCQ No - 2

Which of the following statement is correct according to Clausius statement of the second law of thermodynamics?

(A)

It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature

(B)

It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source

(C)

Heat can be transfer itself from low temperature to high temperature

(D)

None of these


B
MCQ No - 3

According to the Carnot corollary-I

(A)

all the reversible engines have the same efficiency for a given fixed temperatures limit

(B)

all the reversible and irreversible engines have the same efficiency

(C)

irreversible engines have maximum efficiency

(D)

all the reversible engines are less efficient than irreversible engines


A
MCQ No - 4

COP of the refrigerator is the ratio of

(A)

refrigerating effect to work input by the compressor

(B)

work input by the compressor to the heating effect

(C)

work output to the heat supplied

(D)

heating effect to work input by the compressor


A
MCQ No - 5

The efficiency of any reversible heat engine operating between two thermal reservoirs is independent of the nature of working fluid and depends only on the temperature of thermal reservoirs is known as

(A)

Clausius inequality

(B)

Clausius theorem

(C)

Clausius statement of 2nd law of thermodynamics

(D)

Carnot corollary-II


D