Ohio Contractors License Exams

Ohio Refrigerant Contractor

Sample Questions for the Ohio Refrigerant Contractors Exam

  1. Compressors can have from one to ___________ cylinders.
    1. 10
    2. 16
    3. 12
    4. 8
  2. _____________ is a means of passing air over food in an open display case.
    1. Single-duty case
    2. Air curtain
    3. Condensing unit
    4. Circuit cold plate
  3. What is a gauge manifold used for?
    1. checking pressures
    2. charging
    3. adding oil
    4. all of the above
  4. A common cause of excessive head pressure is ________________.
    1. undercharged system
    2. frosting
    3. overcharge
    4. short cycling
  5. What is used to make service stems leak proof?
    1. packing
    2. insulation
    3. multiple evaporator installation
    4. epoxy resin
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