ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

2: 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

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

3: A restaurant is classified as a

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

4: Refrigerants shall be classified by

  • requirements for commercial, industrial, and residential occupancies
  • maximum permissible quantities of each group
  • toxicity and flammability
  • color codes

5: What is a Category "M" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

6: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 350
  • 400
  • 100
  • 250

7: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

  • 1
  • 2
  • 3
  • 5

8: When a refrigeration or air conditioning system is installed

  • a field inspection shall be made before it is put into service
  • it shall be approved by the owner for proper operation.
  • the form of certificate shall be authorized by the Department of Pubic safety
  • it shall not be operated below prescribed pressures

9: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

10: 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

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

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

12: 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

  • boiler
  • evaporator
  • outside the machinery room
  • compressor

13: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

14: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 550
  • 100
  • 350
  • 50

15: When air is ducted through a machine room that services occupied space, What must be done?

  • Welded and seamed.
  • Insulated and cross broke
  • Ducted and sealed
  • Flanged and gasketed

16: Ammonia belongs to Group

  • B-2
  • B-1
  • A-2
  • A-1

17: 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.

18: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Copper
  • Magnesium
  • Nickel
  • Zinc

19: 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
  • Lithium bromide
  • HCFC-123

20: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

21: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UR
  • UL and UM
  • UV or UR
  • UM or UL

22: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection
  • over pressure protection and a rupture disc
  • over pressure protection as well as a temperature protection device

23: What type of relief valve is used on a CO2 system?

  • rupture disc
  • gate valve
  • glove disc
  • fusible plug

24: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

25: Name an HCFC refrigerant(s):

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