ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What pipe can not be used for refrigeration?

  • L
  • K
  • N
  • M

2: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

3: 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
  • 2.0
  • 3.0

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

  • R-11
  • R-22
  • R-12
  • R-113

5: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

6: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class B machinery room
  • Class M machinery room
  • Class T machinery room
  • Class A machinery room

7: 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
  • HCFC-123
  • ammonia
  • Lithium bromide

8: Class A refrigerants are considered

  • non-flammable
  • flammable
  • toxic
  • non-toxic

9: What is the minimum height refrigeration piping should be placed against walls?

  • 7.25'
  • Ceiling height
  • 72"
  • 6'

10: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 330
  • 6.6
  • 110
  • 1,000

11: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 15
  • 20
  • 10
  • 25

12: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 18
  • 10
  • 15
  • 24

13: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-11
  • R-113
  • R-12

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

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

15: How many gallons of water per pound of ammonia do you need?

  • 20
  • 5
  • 15
  • 1

16: R-11 belongs to Group

  • B-3
  • A-1
  • B-1
  • A-2

17: Ammonia can come in contact with _______ ?

  • Aluminum
  • Brass
  • Copper
  • Copper tubing

18: What would be the classification of a church?

  • Institutional
  • Industrial
  • Large mercantile
  • Place of assembly

19: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.5
  • 1
  • 2.2
  • 1.2

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

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

21: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • higher
  • lower
  • there is no Group B1 refrigerants
  • the same

22: When a refrigeration or air conditioning system is installed

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

23: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 24
  • 18
  • 48
  • 36

24: A class B1 refrigerant is considered

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

25: What is the refrigerant dichlorodifluoromethane?

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