Refrigeration RT/RC Prep Quiz

Topics: All categories in the pool

Quiz Result Settings

1: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • Halon
  • HFC

2: What is considered a cooling agent?

  • any liquid used for the transmission of heat without condensation
  • any liquid used for the transmission of heat without vaporization
  • any liquid used for the transmission of heat when vaporization occurs
  • any liquid used for the transmission of heat when condensation occur

3: Joints in refrigeration piping must be _____ before being covered?

  • Insulated
  • Leak tested
  • Pressurized
  • Inspected

4: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

5: A professional or office building would be considered what type of occupancy?

  • mercantile
  • commercial
  • business
  • public assembly

6: A run capacitor is wired in series with the _____ windings.

  • start capacitor
  • start
  • common
  • run

7: When the compressor is below the condensor

  • traps are needed on the suction line
  • traps are needed on the oil return line
  • traps are needed on the discharge line
  • traps are not needed on this type of system

8: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 2 months
  • 1 week
  • 14 days
  • 30 days

9: The freezing point of water at sea level is?

  • 32F
  • 32C
  • -10C
  • 0F

10: The Department that certifies the transportation of refrigerant is the

  • EPA
  • DOT
  • EPO
  • RSES

11: Electricity involves the movement of electrons in atoms

  • True
  • False

12: Heat is a form of

  • matter
  • power
  • energy
  • work

13: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

14: A direct system

  • is where the refrigerant comes in contact with the space refrigerated
  • is one which encloses a separate body of evaporative refrigerant
  • is a self-contained complete factory made and tested system
  • is on where brine is cooled & circulated to the space refrigerated

15: An oil pressure safety switch should be set at

  • 5 to 10 psi above low side pressure
  • 10-15 psi above low side pressure
  • 5 to 10 psi below low side pressure
  • 10 to 15 psi below low side pressure

16: Which of the following is an example of an azeotropic refrigerant?

  • R-500
  • R-134A
  • R-410A
  • R-404A

17: Gauge pressure is

  • absolute pressure
  • atmospheric pressure
  • what a gauge reads when checking pressures on a chilled water system.
  • force of pressure above that of atmospheric

18: Before replacing a seized compressor, the _______ should be determinded.

  • designed head pressure
  • cause of seizure
  • current draw
  • type of refrigerant

19: R-11 has the greatest corrosive effect on

  • Copper
  • Bronze
  • Aluminum
  • Magnesium

20: R-410A is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-1
  • A-2
  • B-2

21: What kind of system uses two different refrigerants in separate systems dependent on each other?

  • Cascade
  • Simple
  • R-414B
  • Low pressure

22: One atmosphere equals

  • 29.4
  • 0 psia
  • 0 psig
  • 14.7

23: What refrigerant is an inorganic compound?

  • R-410A
  • Ammonia
  • R-22
  • R-132A

24: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UM” and “UV”
  • “UL”
  • “UV”
  • “U” or “UM”

25: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct