Refrigeration Quiz - 10 Questions

10 Questions | By Catherinehalcomb | Last updated: Mar 20, 2022 | Total Attempts: 49

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Questions and Answers

1.

How do you test a PTC relay?
- A.
  
  Check resistance between start and run, should have 20 - 50 ohms
- B.
  
  Check voltage at the PTC relay
- C.
  
  Check resistance between start and run, should have 4 - 10 ohms
- D.
  
  There is no way to accurately check a PTC relay
2.

What does PTC stand for, in regards to a PTC relay?
- A.
  
  Pressure Temperature Coefficient
- B.
  
  Positive Temperature Coefficient
- C.
  
  Positive Time Compressor
- D.
  
  Pressure Temperature Compressor
3.

What function does a relay do on a refrigerator?
- A.
  
  Makes ice
- B.
  
  Monitors the temperature in the fresh food compartment
- C.
  
  Starts the compressor
- D.
  
  Absorbs contaminants in the sealed system
4.

The purpose of the defrost cycle to remove frost from
- A.
  
  The icemaker
- B.
  
  The freezer shelving
- C.
  
  The condenser
- D.
  
  The evaporator
5.

What is the state of refrigerant in a condenser when a refrigerator is running?
- A.
  
  High pressure vapor/liquid
- B.
  
  Low pressure vapor/liquid
- C.
  
  No pressure vapor/liquid
- D.
  
  None of the above
6.

What is the type of lubricant used for door gaskets?
- A.
  
  Thin film of WD-40 on the hinge side
- B.
  
  Thin film of vasoline on the hinge side
- C.
  
  Thin film of zoom spout on the hinge side
- D.
  
  Thin film of lithium grease on the hinge side
7.

What is the state of refrigerant in an evaporator when a refrigerator is running?
- A.
  
  High pressure vapor/liquid
- B.
  
  Low pressure vapor/liquid
- C.
  
  No pressure vapor/liquid
- D.
  
  None of the above
8.

Defrost bi-metals are universal and can fit into any model or brand.
- A.
  
  True
- B.
  
  False
9.

What is this component called?
- A.
  
  Defrost Heater
- B.
  
  Defrost Timer
- C.
  
  Defrost Bi-metal
- D.
  
  None of the above
10.

How do you check a thermistor?
- A.
  
  Isolate and check for less than one ohm
- B.
  
  Isolate and check for more than one ohm
- C.
  
  Check for the appropriate resistance based on temperature - each one is specific to the model
- D.
  
  Check for the appropriate resistance based on temperature - at room temperature usually 1100 ohms