# Refrigeration and Air Conditioning (2161908) MCQ

### MCQs of Absorption Refrigeration System

MCQ No - 1

#### The COP of a vapour compression plant in comparison to vapour absorption plant is

(A) more
(B) less
(C) same
(D) depends on the size of the plant

A
MCQ No - 2

#### The COP of the VAR system is _________ compared to the COP of the VCR system.

(A) high
(B) less
(C) same
(D) depends on the capacity of the plant

B
MCQ No - 3

#### Absoption system normally uses the following refrigerant:

(A) $C{O}_{2}$
(B) $S{O}_{2}$
(C) $N{H}_{3}$
(D) R-11

C
MCQ No - 4

#### Aqua-ammonia is used as a refrigerant in the following type of refrigeration system

(A) compression
(B) indirect
(C) absorption
(D) none of the above

C
MCQ No - 5

#### Fittings in the ammonia absorption refrigeration system are made of

(A) cast steel or forgings
(B) copper
(C) brass
(D) aluminium

A