HVAC CONTRACTOR EXAM
What is the saturation temperature of R-410A at 316 Psig
a. 120 degrees
b. 40 degrees
c. 100 degrees
d. 135 degrees - ✔ ✔ 100 degrees
Refer to house drawing 1: what is the net summer heat gain through
the east exterior wall of bedroom 1? Select the nearest answer
a. 231 btuh
b. 132 btuh
c. 435 btuh
d. 114 btuh - ✔ ✔ 114 btuh
Refer to house drawing 1: what is the net summer heat gain through
the west windows in bedroom 2? Select the nearest answer
a. 2146btuh
b. 1345 btuh
,c. 1840 btuh
d. 576 btuh - ✔ ✔ 1840 btuh
Refer to house drawing 1: what is the net heat loss through the floor of
bedroom 1? Select the nearest answer
a. 1180 btuh
b. 5900 btuh
c. 890 btuh
d. 3324 btuh - ✔ ✔ 1180 btuh
Refer to house drawing 1: consider the window in the bath to be glass
block glazing. If the total area of that window is 15 square feet, what
would the net winter heat loss be?
a. 1324 btuh
b. 450 btuh
c. 178 btuh
d. 36 btuh - ✔ ✔ 450 btuh
Which device would a technician need to connect to a gas heating
thermocouple to test it under a no load condition?
a. Ammeter
, b. Manometer
c. Millivolt meter
d. Ohmmeter - ✔ ✔ Millivolt meter
When a technician troubleshoots a typical residential HVAC system one
of the first things they should do is?
a. Turn the thermostat to the heat position
b. Turn the unit disconnect to the off position
c. Turn the thermostat fan switch to the on position
d. Turn the thermostat fan switch to the auto position - ✔ ✔ Turn
the thermostat fan switch to the on position
What size round duct would be required for an airflow rate of 1,400
cam and .1 friction?
a. 22 inch
b. 25 1/2
c. 18 inch
d. 16 inch - ✔ ✔ 16 inch
Generally speaking the ratio of return air to supply air should be
a. .8 to 1
What is the saturation temperature of R-410A at 316 Psig
a. 120 degrees
b. 40 degrees
c. 100 degrees
d. 135 degrees - ✔ ✔ 100 degrees
Refer to house drawing 1: what is the net summer heat gain through
the east exterior wall of bedroom 1? Select the nearest answer
a. 231 btuh
b. 132 btuh
c. 435 btuh
d. 114 btuh - ✔ ✔ 114 btuh
Refer to house drawing 1: what is the net summer heat gain through
the west windows in bedroom 2? Select the nearest answer
a. 2146btuh
b. 1345 btuh
,c. 1840 btuh
d. 576 btuh - ✔ ✔ 1840 btuh
Refer to house drawing 1: what is the net heat loss through the floor of
bedroom 1? Select the nearest answer
a. 1180 btuh
b. 5900 btuh
c. 890 btuh
d. 3324 btuh - ✔ ✔ 1180 btuh
Refer to house drawing 1: consider the window in the bath to be glass
block glazing. If the total area of that window is 15 square feet, what
would the net winter heat loss be?
a. 1324 btuh
b. 450 btuh
c. 178 btuh
d. 36 btuh - ✔ ✔ 450 btuh
Which device would a technician need to connect to a gas heating
thermocouple to test it under a no load condition?
a. Ammeter
, b. Manometer
c. Millivolt meter
d. Ohmmeter - ✔ ✔ Millivolt meter
When a technician troubleshoots a typical residential HVAC system one
of the first things they should do is?
a. Turn the thermostat to the heat position
b. Turn the unit disconnect to the off position
c. Turn the thermostat fan switch to the on position
d. Turn the thermostat fan switch to the auto position - ✔ ✔ Turn
the thermostat fan switch to the on position
What size round duct would be required for an airflow rate of 1,400
cam and .1 friction?
a. 22 inch
b. 25 1/2
c. 18 inch
d. 16 inch - ✔ ✔ 16 inch
Generally speaking the ratio of return air to supply air should be
a. .8 to 1
