In this article, we shared the HVAC multiple choice questions and answers.
HVAC Multiple Choice Questions
The below list provides all the multiple-choice questions related to Heating, ventilation, and air conditioning.
Answers are available at the bottom of the article.
Question 1:
The motor used for domestic refrigerators is
A) Shunt motor
B) Series motor
C) Universal motor
D) Single phase induction motor
Question 2:
Refrigeration capacity is measured in
A) Kg
B) Tons
C) °C
D) °F
Question 3:
Hot water of condenser is cooled by
A) Ammonia gas
B) Freon gas
C) Cooling tower
D) Chilled water
Question 4:
The purpose of a dehydrator is
A) To compress the gas
B) To protect the referigeration system from atmosphere pressure
C) AIl of these answers
D) To remove moisture from refrgeration system
Question 5:
Out of which is not a part of the refrigerator
A) Freezer
B) Air compressor
C) Condenser
D) Thermostat
Question 6:
What is the cause of a pump running tight
A) Shaft bend
B) All of these answers
C) Lack of lubrication
D) Incorrect pump fitting
Question 7:
For voltage regulation for a domestic refrigerator which is generally used
A) AIl of these answers
B) Shunt capacitor
C) Voltage stablizer
D) Shunt motor
Question 8:
The refrigeration process is mainly for
A) Food protection
B) None of these answers
C) Protection against dust
D) Germs killing
Question 9:
Generally which gas is used in refrigerators
A) Freon 11
B) Freon 22
C) Freon 13
D) Freon 12
Question 10:
Whích is not a part of the electrical system in a refrigeration system
A) Thermostat
B) Induction motor
C) None of these answers
D) Condenser
Question 11:
Freon gas is a
A) Tranic gas
B) colorless gas
C) All of these answers
D) Flammable gas
Question 12:
Out of the following which is a secondary refrigerant
A) None of these answers
B) Freon
C) Ammonia
D) Sulphur dioxide
Question 13:
How much temperature is maintained in the freezer of a refrigerator
A) 0°F
B) 50°F
C) 5°F
D) 20°F
Question 14:
Which is the type of liquid circulating pump out of following
A) Reciprocating pump
B) All of these answers
C) Rotarty pump
D) Centrifugal pump
Question 15:
Belt driven unit is called
A) Semi-sealed unit
B) Sealed unit
C) None of these answers
D) Open unit
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