Interesting Trivia: Heating And Air Conditioning Service! Quiz

17 Questions | By Ozzzmann | Last updated: Mar 21, 2022 | Total Attempts: 968

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Interesting Trivia: Heating And Air Conditioning Service! Quiz - Quiz

With the hanging seasons it is important to keep warm in the winter and get some cool air for the summer. This therefore places some importance on understanding how to fit in heating and air conditioning equipment for buildings. Take up the true or false test below and get to see how much you know about these services and what is needed to have a proper functioning one. All the best!

Questions and Answers

1.

A manifold gauge set can be used during the evacuation of the A/C system.
- A.
  
  True
- B.
  
  False
2.

A manifold gauge set can be used during A/C system diagnosis.
- A.
  
  True
- B.
  
  False
3.

Refrigerant condenses quickly when exposed to the atmosphere.
- A.
  
  True
- B.
  
  False
4.

A manifold gauge set is used to determine both high-side and low-side pressures in the refrigeration system.
- A.
  
  True
- B.
  
  False
5.

Warm underhood temperatures produce lower than normal A/C system pressures.
- A.
  
  True
- B.
  
  False
6.

A single drop of water in an A/C refrigeration sytsem may cause damage to the system.
- A.
  
  True
- B.
  
  False
7.

Refrigerant is lighter than oxygen.
- A.
  
  True
- B.
  
  False
8.

R-12 is stored in light blue containers.
- A.
  
  True
- B.
  
  False
9.

R-134a is stored in yellow containers.
- A.
  
  True
- B.
  
  False
10.

Which of the following statements best defines the term 'evacuation'?
- A.
  
  Evacuation is a process in which refrigerant in the system is released.
- B.
  
  Evacuation is a condition that exists when a compressor runs until there is no refrigerant left in the system.
- C.
  
  Evacuation is a process that removes all traces of air, moisture, and refrigerant from the system.
- D.
  
  Evacuation is a process that uses air to force moisture and dirt out of the system.
11.

Which of the following statements is not true about orifice tube systems?
- A.
  
  The suction line must be cool to the touch from the evaporator outlet to the compressor.
- B.
  
  The liquid line from the condenser outlet to the orifice tube should be cool.
- C.
  
  The evaporator should feel very cold.
- D.
  
  The accumulator must be cool to the touch.
12.

Which of the following cannot cause excessive heat?
- A.
  
  A loose or damaged control cable
- B.
  
  A heater control valve stuck open
- C.
  
  A water flow control valve not opening fully
- D.
  
  A faulty thermostatic fan
13.

To charge an air conditioning system while it is running, the refrigerant should be added to the:
- A.
  
  High side
- B.
  
  Low side
- C.
  
  Both A and B
- D.
  
  Neither A nor B
14.

R-12 refrigerant exposed to an open flame will produce:
- A.
  
  Hydrogen gas
- B.
  
  Hydrofluorocarbon gas
- C.
  
  Hydrochloric gas
- D.
  
  Phosgene gas
15.

R-12 and R-134a:
- A.
  
  Should never be mixed
- B.
  
  May be mixed after a system has been converted from R-12 to R-134a
- C.
  
  Use the manifold gauge sets
- D.
  
  All of the above
16.

EPA certification is required to:
- A.
  
  Service R-12 A/C systems
- B.
  
  Purchase R-12
- C.
  
  Both A and B
- D.
  
  Neither A nor B
17.

Technician A says evacuating (pumping down) an air conditioning system removes air and moisture from the system. Tcehnician B says evacuating (pumping down) an air conditioning sytem removes dirt particles from the system. Who is correct?
- A.
  
  A only
- B.
  
  B only
- C.
  
  Both A and B
- D.
  
  Neither A nor B