1000+ Refrigeration & Air Conditioning Multiple Choice Questions & Answers - 2

Question: 6

Which refrigerant has the highest critical point temperature?

(A) freon 11

(B) freon 12

(C) freon 22

(D) ammonia

Question: 7

In vapour absorption system, the function of rectifier is

(A) to add energy from external source

(B) to dissolve ammonia in water

(C) to cool the vapour leaving the analyzer

(D) to separate ammonia and water

Question: 8

Which of the following refrigerant has the freezing point?

(A) freon 11

(B) freon 22

(C) ammonia

(D) carbondioxide

Question: 9

In a ammonia vapour compression cycle, during gas charging the connection is made

(A) on high pressure side close to receiver

(B) at the compressor outlet

(C) at the compressor cycle

(D) anywhere in the cycle

Question: 10

In order to ensure leak proof mechanical links, the end of copper tubing in refrigeration cycle is

(A) press-fitted

(B) soldered

(C) brazed

(D) flared