Applied Thermodynamics (3161910) MCQs

MCQs of Refrigerant and Refrigeration Cycles

Showing 61 to 65 out of 65 Questions
4 5 6 7
61.

What is the purpose of using liquid sub-cooler?

(a)

To increase the cost of compressor
(b)

To reduce volumetric efficiency
(c)

To re-heat superheated refrigerant
(d)

To increase the refrigeration effect
Answer:

Option (d)

62.

What is the purpose of using a flash chamber?

(a)

To increase pressure
(b)

To decrease pressure
(c)

To separate vapor and liquid refrigerant
(d)

To evaporate refrigerant partially
Answer:

Option (c)

63.

What does process 3-4 represent?

refrigeration-questions-answers-two-multi-stage-compression-water-intercooling-liquid-subcooling-flash-chamber-2-q5.png (683×419)

(a)

Evaporation
(b)

Compression
(c)

Mixing of refrigerant coming from the flash chamber
(d)

Condensation
Answer:

Option (c)

64.

What do PC and PE represent?

(a)

Evaporator and expansion pressure
(b)

Compression and expansion pressure
(c)

Condenser and evaporator pressure
(d)

Intercooling pressure
Answer:

Option (c)

65.

What is the value of work done in the following diagram?

refrigeration-questions-answers-cascade-systems-2-q4

(a)

m1 (h2 – h4) + m2 (h5 – h6)
(b)

m1 (h2 – h1) + m2 (h6 – h5)
(c)

m1 (h2 – h8) + m2 (h5 – h8)
(d)

m1 (h2 – h5) + m2 (h4 – h8)
Answer:

Option (b)

Showing 61 to 65 out of 65 Questions
4 5 6 7