Refrigeration Quiz - 10 Questions

10 Questions | 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

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