Basic Mechanical Engineering (3110006) MCQs

MCQs of Refrigeration & Air Conditioning

Showing 11 to 20 out of 40 Questions
1 2 3 4
11.
The higher temperature in the vapour compression cycle occurs at
(a) expansion valve outlet
(b) condenser discharge
(c) compressor discharge
(d) evaporator outlet
Answer:

Option (c)

12.
In a refrigeration system, the expansion device is connected between the
(a) compressor and condenser
(b) evaporator and compressor
(c) condenser and evaporator
(d) none of the above
Answer:

Option (c)

13.
In a refrigeration cycle, heat is rejected by the refrigerant in a
(a) expansion valve
(b) condenser
(c) compressor
(d) evaporator
Answer:

Option (b)

14.
In a vapour compression refrigeration cycle, the heat is absorbed by the refrigerant in a
(a) expansion valve
(b) condenser
(c) compressor
(d) evaporator
Answer:

Option (d)

15.
In a vapour compression refrigeration cycle, pressure remains constant in
(a) expansion valve
(b) condenser
(c) compressor
(d) none of the above
Answer:

Option (b)

16.
In a vapour compression refrigeration cycle, the enthalpy remains constant during
(a) expansion
(b) condensation
(c) compression
(d) evaporation
Answer:

Option (a)

17.
Most of the domestic refrigerators work on the following refrigeration system
(a) Vapour compression
(b) Vapour absorption
(c) Carnot cycle
(d) All of the above
Answer:

Option (a)

18.
What is the process carried out in the generator of vapour absorption refrigeration cycle?
(a) Weak solution of ammonia in water is heated
(b) Strong solution of ammonia in water is heated
(c) Only water is heated and heat is given to the ammonia to form its vapour
(d) None of the above
Answer:

Option (b)

19.
Vapour absorption system normally uses the following refrigerant
(a) carbon dioxide
(b) sulfur dioxide
(c) ammonia
(d) R-134a
Answer:

Option (c)

20.
Ammonia is
(a) non-toxic
(b) non-inflammable
(c) toxic and non-inflammable
(d) highly toxic and inflammable
Answer:

Option (d)

Showing 11 to 20 out of 40 Questions
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