1000+ Refrigeration and Air Conditioning Objective Questions & Answers - 1

Question: 1

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

(A) condenser

(B) compressor

(C) evaporator

(D) expansion valve

Ans: A


Question: 2

In Electrolux refrigerator

(A) ammonia evaporates in hydrogen

(B) ammonia is absorbed in water

(C) ammonia is absorbed in hydrogen

(D) hydrogen is absorbed in water

Ans: A

ammonia evaporates in hydrogen

Question: 3

A salinometer

(A) measures density of brine

(B) measures sound level

(C) measures intensity of illumination

(D) measures temperatures in cryogenic regions

Ans: A

measures density of brine

Question: 4

The secondary refrigerant used in milk chilling plants is usually

(A) ammonia solution

(B) brine

(C) sodium silicate

(D) glycol

Ans: D


Question: 5

The moisture in a refrigeration system is removed by

(A) cooler

(B) drier

(C) dehumidifier

(D) evaporator

Ans: B


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