Topics: All categories in the pool
1: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
2: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall be inspected by the Boiler of Inspectors bi-annually
- does not require a pressure-limiting device
- shall have a pressure limiting device and a pressure relief valve installed
- shall have a pressure limiting device installed on the high side of the system
3: A high side float is a
- float type switch that stops the compressor when the pressure on the high side becomes too high
- float type valve that controls the amount of refrigerant stored in the receiver
- float type valve that controls the crankcase oil level
- metering device used on critically charged systems that controls the level of the liquid refrigerant in the high pressure side of the system.
4: Indirect systems using Group II refrigerants
- shall have all refrigerant containing parts except piping, installed in a Class T machine room
- shall be used in refrigeration system in excess of 1,000 lbs
- shall be used for mechanical equipment only
- shall be used in refrigeration system less than 1,000 lbs
5: What is not a requirement of a Class T machine room?
- Self-closing doors
- Fire hose connected to the building fire protection system.
- Automatic ventilation
- Tight fitting doors
6: What measures gas pressure?
- Hygrometer
- Hydrometer
- Barometer
- Manometer
7: What is the voltage of each leg of a 480 Volt three-phase motor?
- 277v
- 208v
- 120v
- 240v
8: What is the boiling point of refrigerant governed by?
- Compressor RPM's
- P&T relationship
- Condenser sub-cooling
- Evaporator temperature
9: A motor starter contains a thermal overload and a
- 3-way relay
- contactor
- solenoid
- transformer
10: How many flammability classifications are refrigerants in?
- 2
- 5
- 3
- 7
11: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
12: Starting relays for a single phase compressors are used to remove the starting circuit from operation when the motor reaches approximately ____ percent of its speed.
- 50
- 100
- 75
- 24
13: All serviceable components of a refrigeration system shall be provided with
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- service manuals
- safe access
- manufactures instructions on start-up procedures
14: How is bring measured?
- manometer
- anemometer
- hydrometer
- hygrometer
15: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- A group sensing
- phosgene gas sening
- CO Sensing
- refrigerant sensing
16: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-11
- R-12
17: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
18: Brazed joints melt at temperatures above
- 800F
- 1,200F
- 500F
- 1,000F
19: 14.7 psia is equivalent to
- atmospheric pressure at seal level
- 29.92" Hg
- 0 psig
- All of the above.
20: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-113
- R-12
- R-11
21: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct
22: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with R-11
- Flush with RX-11
- Flush with ammonia
- Flush with R-718
23: Who authorizes changes to the safety codes?
- Board of Boilers
- Person in charge of the facility
- Contractor who last serviced the system.
- Person who pulled the permit
24: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
25: Start to Run windings will have what resistance?
- All will be at equal values
- The most resistance value
- The least resistance value
- Somewhere between the actual start winding and run winding resistance value