ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A relief valve discharge capacity is rated in

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

2: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

3: What is the refrigerant chlorodifluoromethane?

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

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

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

5: 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.

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

6: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 25'
  • 30'
  • 15'

7: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

8: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

9: What section of ASHRAE-15 governs pressure vessels?

  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 9 ASHRAE-15 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA

10: A restaurant is classified as a

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

11: Direct systems using Group II refrigerants

  • shall be allowed to be used for human comfort.
  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms
  • shall not be used for air condition for human comfort

12: Which refrigerant replaced R-12?

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

13: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • compressor
  • evaporator
  • boiler
  • outside the machinery room

14: How many refrigerant classifications are there for toxicity?

  • 1
  • 5
  • 2
  • 3

15: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.

  • 80%
  • 90%
  • 75%
  • 100%

16: What is an example of institutional occupancy?

  • Football stadium
  • Dorms
  • Hospital
  • Shopping mall

17: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the low side
  • the high side
  • the aggregate of the high side and low side
  • 2.5 times the design pressure

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

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

19: A High-Probablity system

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

20: A movie theater would be considered a

  • commercial occupancy
  • mixed occupancy
  • public assembly occupancy
  • institutional occupancy

21: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

22: All serviceable components of a refrigeration system shall be provided with

  • manufactures instructions on start-up procedures
  • service manuals
  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • safe access

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

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

24: Halo-carbon refrigerants cannot be used with what material?

  • Aluminum
  • Magnesium alloy
  • Copper
  • Stainless Steel

25: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?

  • R-11
  • R-12
  • R-22
  • R-113