Engineering Thermodynamics (3131905) MCQs

MCQs of Refrigeration Cycles

Showing 1 to 10 out of 39 Questions
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1.

In a refrigeration cycle, heat is rejected by the refrigerant in a 

(a)

expansion valve
(b)

condenser
(c)

compressor 
(d)

evaporator
Answer:

Option (b)

2.

In vapour compression refrigeration system, the condition of refrigerant is saturated liquid

(a)

after passing through the condenser
(b)

before passing through the condenser
(c)

before entering the compressor
(d)

after passing through the expansion valve
Answer:

Option (a)

3.

In vapour compression refrigeration system, the condition of refrigerant is very wet vapour

(a)

after passing through the condenser
(b)

before passing through the condenser
(c)

before entering the compressor
(d)

after passing through the expansion valve
Answer:

Option (d)

4.

In vapour compression refrigeration system, the condition of refrigerant is dry & saturated vapour

(a)

after passing through the condenser
(b)

before passing through the condenser
(c)

before entering the compressor
(d)

after passing through the expansion valve
Answer:

Option (c)

5.

In refrigeration system, heat absorbed in comparison to heat rejected is 

(a)

more
(b)

less
(c)

same
(d)

can't say
Answer:

Option (b)

6.

The higher temperature in  vapour compression cycle occurs at

(a)

expansion valve
(b)

condenser discharge
(c)

compressor discharge
(d)

evaporator
Answer:

Option (c)

7.

The subcooling is a process of cooling the refrigerant in VCR system

(a)

before compression
(b)

after compression
(c)

before throttling
(d)

after throttling
Answer:

Option (c)

8.

In a refrigeration system, the expansion device is connected between the

(a)

compressor and condenser
(b)

condenser and receiver
(c)

receiver and evaporator
(d)

evaporator and compressor
Answer:

Option (c)

9.

Domestic refrigerator working on vapour compression cycle uses the following type of expansion device

(a)

electrically operated throttling valve
(b)

manually operated valve
(c)

thermostatic valve
(d)

capillary tube
Answer:

Option (d)

10.

The short horizontal line on pressure-enthalpy chart show

(a)

constant pressure lines
(b)

constant temperature lines
(c)

constant specific volume lines
(d)

constant entropy lines
Answer:

Option (b)

Showing 1 to 10 out of 39 Questions
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