ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A hotel is considered a _______ occupancy.

  • institutional
  • commercial
  • mercantile
  • residential

2: A class A3 refrigerant is considered

  • non-toxic but highly flammable
  • non-toxic and non-flammable
  • toxic and non-flammable
  • toxic and somewhat flammable

3: What type of copper is not permitted on refrigeration systems?

  • Type K
  • Type L
  • Type N
  • Type M

4: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 1000F
  • 800F
  • 700F
  • 600F

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

  • business
  • public assembly
  • commercial
  • mercantile

6: A High-Probablity system

  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is a system highly likely to leak from a failed connection or component of such system
  • is such that a leak of refrigerant from failed connections will enter the occupied space

7: Most CFC's are

  • toxic
  • flammable
  • inert but toxic
  • inert

8: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

9: A restaurant is classified as a

  • large mercantile occupancy
  • public assembly occupancy
  • mixed occupancy
  • commercial occupancy

10: When an inspection is needed, how often must it be done?

  • every 18 months
  • annually
  • every 24 months
  • every 36 months

11: What type of material can't be used on the outlet of a relief valve?

  • Stainless steel
  • Magnesium alloy
  • Copper
  • PVC

12: What is the refrigerant dichlorodifluoromethane?

  • R-123
  • R-134A
  • R-22
  • R-12

13: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 50
  • 22
  • 18
  • 33

14: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

15: Which refrigerant replaced R-12?

  • R-134A
  • R-407A
  • R-22
  • R-410A

16: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

17: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs
  • shall use fusible plugs

18: What refrigerant doesn't have to be classifted?

  • R-134a
  • R-717
  • R-718
  • R-711

19: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices
  • do not need pressure relief protection

20: What pipe can not be used for refrigeration?

  • M
  • K
  • N
  • L

21: What is not a requirement of a Class T machine room?

  • Self-closing doors
  • Fire hose connected to the building fire protection system.
  • Tight fitting doors
  • Automatic ventilation

22: What is the refrigerant chlorodifluoromethane?

  • R-12
  • R-22
  • R-134a
  • R-123

23: What is Trichlorotrifluoromethane?

  • R-11
  • R-12
  • R-13
  • R-113

24: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

25: Dual-pressure relief devices should be installed on

  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or more
  • vessels of 10 cubic feet or less