Topics: ASHRAE/CMR
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