ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A hotel is considered a _______ occupancy.

  • institutional
  • commercial
  • mercantile
  • residential

2: What type of pressure relief device is used on a CO2 system?

  • Fusible plug
  • Glove valve
  • Rupture disk
  • Gate valve

3: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • 24 volt secondary side of the Class 2 transformer to the thermostat
  • load-side of the contactor in
  • first disconnect in
  • breaker panel in

4: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

5: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 8'4"
  • 7.00'
  • 7.25'
  • 9.00'

6: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

7: What is R-22?

  • Chlorofluoromethane
  • HFC
  • CCFCM
  • Chlorodifluoromethane

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

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

9: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • high side of the system
  • the liquid side of the system
  • the vapor side of the system
  • low side of the system

10: What refrigerant is an inorganic compound?

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

11: How far from the ground does a relief valve need to be?

  • At least 15' above grade
  • Not more than 3' above grade
  • At least 25' above grade
  • At least 20' above grade

12: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

13: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.5
  • 5.5
  • 3.0
  • 2.0

14: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 75%
  • 80%
  • 90%
  • 100%

15: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there are sprinklers above
  • When there is a space 6' or more above it
  • When it's used as part of a supply or return air system
  • When its white

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

  • Insulated
  • Inspected
  • Pressurized
  • Leak tested

17: What would be the classification of a prison?

  • Large mercantile
  • Place of assembly
  • Industrial
  • Institutional

18: A relief valve discharge capacity is rated in

  • temperature minus pounds of air per second divided by release rate squared
  • Pounds of air per minute.
  • PSIG
  • PSIA

19: A class A3 refrigerant is considered

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

20: Which refrigerant class listed below is the most flammable?

  • A-1
  • A-3
  • B-2
  • C-3

21: What must be done to refrigerant pipes before being buried?

  • Encased
  • Coated
  • Leaked checked
  • Certified

22: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, approved, fire door
  • Steel, approved, weather-stripped
  • Self-closing, wooden, fire door

23: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • CFC-11
  • ammonia
  • HCFC-123
  • Lithium bromide

24: How many groups of refrigerants are there?

  • 7
  • 5
  • 3
  • 1

25: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above