Topics: ASHRAE/CMR
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