# Engineering Thermodynamics (3131905) MCQ

### MCQs of Exergy

MCQ No - 1

#### The availability (A) of a given system is defined as the ____ work that is obtainable in a process in which system comes to equilibrium with its surroundings.

(A)

useful work

(B)

maximum useful work

(C)

minimum useful work

(D)

none of the mentioned

B
MCQ No - 2

#### The maximum amount of useful work that can be obtained from a system as it undergoes a process between two specified states is called

(A)

(B)

reversible work

(C)

irreversible work

(D)

none of the mentioned

B
MCQ No - 3

#### Availability depends on the

(A)

state of both the system and surroundings

(B)

state of the system only

(C)

state of the surroundings

(D)

none of these

A
MCQ No - 4

#### Availability function for a closed system is given by

(A)

#$$\mathrm U-{\mathrm P}_0\mathrm V+{\mathrm T}_0\mathrm S$$#

(B)

#$$\mathrm U+{\mathrm P}_0\mathrm V+{\mathrm T}_0\mathrm S$$#

(C)

#$$\mathrm U-{\mathrm P}_0\mathrm V-{\mathrm T}_0\mathrm S$$#

(D)

#$$\mathrm U+{\mathrm P}_0\mathrm V-{\mathrm T}_0\mathrm S$$#

D
MCQ No - 5

#### If the final state of the system is the dead state, the ____ and the ____ become identical.

(A)

reversible work, exergy

(B)

irreversible work, exergy

(C)

reversible work, irreversible work

(D)

none of the mentioned

A