1000+Thermodynamics MCQ Questions and Answers - 3

Question: 11

In an isothermal expansion of gases

(A) temperature is unaltered

(B) temperature becomes zero

(C) temperature is raised

(D) temperature is lowered

Question: 12

The first law of thermodynamics, for steady flow

(A) is primarily concerned with heat transfer

(B) is an expression of the conservation of linear momentum

(C) is an energy balance for the specified mass of fluid

(D) accounts for all energy entering and leaving a control volume

Question: 13

Economizer in the boiler heats the

(A) air

(B) coal

(C) steam

(D) feed water

Question: 14

In a reversible polytropic process

(A) the entropy remains constant

(B) the enthalpy remains constant

(C) the internal energy remains constant

(D) some heat transfer occurs

Question: 15

Heat and work are

(A) path functions

(B) point functions

(C) intensive properties

(D) extensive properties