Mcq on availability

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Mcq on availability

Objective questions MCQ on availability

1. Availability is an a composite property of system.

A. True

B. False

Answer:- A

2. Available work is maximum for reversible process.

A. True

B. False

Answer:- A

3. Which of the following statement is true about phase rule.

A. G = H - TS

B. G = H + TS

C. G = U + pv - TS

D. Both options (A) and (B)

Answer:- D

4. For closed system availability function is

A. U - pv - Ts

B. U - pv + Ts

C. U + pv - Ts

D. U + pv + Ts

Answer:- C

5. If process is reversible then useful work is less than maximum

A. True

B. False

Answer:- B

6. Which of the following statements is true about Helmholtz functions

A. -U + TS

B. -U - TS

C. U + TS

D. U - TS

Answer:- D

7. The availability concepts is described from which of the following law of thermodynamics.

A. First law of thermodynamics

B. Second law of thermodynamics

C. Third law of thermodynamics

D. None of the above

Answer:- B

8. Energy cannot be used for doing work is called as unavailable energy.

A. True

B. False

Answer:- A

9. Unavailable energy is also called as ....

A. Energy

B. Exergy

C. Work energy

D. None of the above

Answer:- B

10. Availability is also called as available energy.

A. True

B. False

Answer:- A

11. Exergy is a property that links the system and.......

A. Surrounding

B. Surface

C. Boundary

D. None of the above

Answer:- A

12. Which of the following processes are associated with a loss in available energy.

A. Constant processes

B. All spontaneous processes

C. Non spontaneous processes

D. None of the above

Answer:- B

13. A system that is in equilibrium with its environment is called as...

A. Dead system

B. Low State

C. Dead state

D. None of the above

Answer:- C

14. 2 kg of air at 21°C are heated at constant pressure until the absolute temperature is doubled the surrounding are at 20°C unavailable energy ?

A. 100 KJ

B. 175 KJ

C. 394 KJ

D. 120 KJ

Answer:- C

15. All spontaneous process are associated with a loss in available energy.

A. True

B. False

Answer:- A