HVAC Multiple Choice Questions

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

Click Here for Answers

If you liked this article, then please subscribe to our YouTube Channel for Electrical, Electronics, Instrumentation, PLC, and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Next Quiz:

• Electrical Meters Quiz
• Electrical Symbols Quiz
• Transformers Quiz
• Equipment Grounding Quiz
• Circuit Breaker Quiz