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HVAC Journeyman's Study Set Questions With Complete Solutions.
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HVAC Journeyman's Study Set Questions With Complete Solutions.
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Name: Score:279 Multiple choice questions
Term 1 of 279
Which of the following is true about the use of an electronic expansion valve
it operates with a thermistor to monitor the refrigerant temperature
it can be used for a wider variation and loads than the typical TXV
It can be used to allow more refrigerant to flow during low head pressure conditions during low
ambient operation
All of the above
Category two
All of the above
Smoke detector
Dewpoint
Term 2 of 279
A chimney that is 17-18 inches in diameter is required to be what minimum thickness?
10 Ga
8 Ft
18 Ga
12 GA
,Term 3 of 279
ducks that operate at temperatures exceeding _______ shall have sufficient thermal insulation to limit
the exposed surface temperature to 120f
90 F
150 F
100 F
120 F
Term 4 of 279
True or false the valve body is required to be kept warmer than the bulb
14 feet
TRUE
False
145 psi
Term 5 of 279
Smoke detector shall be connected to
Install a new air filter in the hvac system
Clean the condenser coils of the outdoor unit
Shut off power to indoor blower circuit
Adjust the thermostat settings for energy efficiency
,Definition 6 of 279
3,412 BTU
a room thermostat should be mounted
5 feet from the floor
the contacts of a potential relay are between terminals
one watt equals
Term 7 of 279
_____ Exhaust duct systems shall extend directly to the exterior of the building and shall not extend
into or through ducts and plenums
Ventilation
Hazardous
Combustible
Insulation
Term 8 of 279
The shut off valve Shall be located in the same room as the appliance, not further than _______ feet
from the appliance, and shall be installed upstream from the union connector or quick disconnect
device it serves
10 ft
3 ft
15 ft
6 ft
, Term 9 of 279
Gas vents shall extend through roof flashing, roof hack or roof thimble and ______ with a listed cap
or listed room assembly.
Isolate
Terminate
Divert
Connect
Term 10 of 279
Which is not a consideration to be used in sizing duct for moving air
The rate at which the air tumbles down the duct
The location the duct is to be installed in
The weight of the air
The type of fittings used
To keep the head pressure up to an acceptable level
Heating anticipator
The time of day
The location the duct is to be installed in
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