Topics: All categories in the pool
1: What is an example of institutional occupancy?
- Football stadium
- Shopping mall
- Dorms
- Hospital
2: If the dry bulb temperature is 85F and the wet bulb temperature is 70F, the dew point temperature will be approximately (use psychometric chart)
- 77F
- 70F
- 32F
- 58F
3: Ammonia can come in contact with _______ ?
- Copper tubing
- Copper
- Aluminum
- Brass
4: If a condenser is on a roof and the temperature is 35F and dropping the capacity
- run as designed with low ambient controls
- decreases
- doesn't change
- increases
5: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs
- 55 lbs
- 660 lbs
- 500 lbs
6: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- refrigerant sensing
- A group sensing
- CO Sensing
- phosgene gas sening
7: The equivalent length of pipe in a water piping system is
- the total length of pipe plus equivalent-length of fittings
- the total length of pipe as you would measure it plus 25% for fittigns
- the total length of pipe as you would measure it
- the total length of pipe plus equivalent of fittings multiplied by 2.31
8: The best way to detect ammonia in brine is
- carbonation of soda
- potassium of line
- CO2 gas
- nessler regaent
9: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Industrial
- Place of assembly
- Instituional
10: Which creates more of a heat load?
- 70% RH
- 90% RH
- 30% RH
- 50% RH
11: The maximum permissible amperage draw for a 40VA transfomer with a secondary voltage of 24V is
- 1.7
- .8
- .1
- 1.2
12: On a centrifugal compressor, stationary diffuser vanes are needed to
- increase the clearance space
- convert velocity energy to pressure
- prevent high pressure on the packing
- stop gas flow
13: R22 and 410A operate at the same range of condensing and evaporating temperatures
- true
- false
14: What is the voltage of each leg of a 480 Volt three-phase motor?
- 120v
- 208v
- 240v
- 277v
15: How many refrigerant classifications are there for flammability?
- 2
- 1
- 3
- 7
16: 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
17: Low ambient controls are used when
- when systems run all year round
- always
- economizers are used
- on air conditioning systems only
18: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 15
- 10
- 18
- 24
19: A start capacitor is wired in _____ with the start windings.
- series-parallel
- junction
- parallel
- series
20: 746 watts is equal to
- 100 hp
- 1 hp
- 10 hp
- Pi
21: A tachometer is an instrument used to measure
- speed
- static pressure
- RPM
- air velocity
22: What does safe access mean?
- A clear unobstructed path to the equipment and controls
- OSHA approved
- Locked doors
- Well-lit exit signs
23: The boiling point of a refrigerant is based on
- Temperature
- Heat content
- a pressure-temperature relationship
- None of the above.
24: A 50 VA control transformer with a 25 volt control output would be rated for _________ amps.
- 2.5
- 2
- There isn't enough information to answer.
- 1250
25: If the power element on an expansion valve should lose its charge, the valve would
- Over feed
- Under feed
- Close
- Stay open