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G2 PRACTICE EXAM #2 140 QUESTIONS AND
CORRECT DETAILAED ANSWERS 2024
UPDATED
What is the minimum diameter of a pressure gauge needed to perform leak
test on gas piping?
A. 2"
B. 2 - 3/4"
C. 3"
D. 3 - 1/2" - ANSWER--c. 3"
Amp meter can read what?
A. Pressure drop.
B. Conductor magnetic field.
C. Load in parallel wires.
D. Direct power across loads. - ANSWER--B. Conductor magnetic field.
What would be the primary voltage of a furnace?
A. 120/2/60.
B. 24/1/60.
C. 120/24/60.
D. 120/1/60. - ANSWER--D. 120/1/60.
What is the function of an intermittent pilot?
A. Shut off after main burner.
B. Stay on before and after main burner.
C. Power up the thermocouple.
D. Stay on during the main burner operation. - ANSWER--D. Stay on during
the main burner operation.
What is the millivolts power output on a closed circuit test?
A. 20 to 30 millivolts.
B. 10 to 15 millivolts.
C. 2 to 4 millivolts.
D. 10 millivolts or less. - ANSWER--B. 10 to 15 millivolts.
A pilot with a lazy yellow flame would indicate?
A. Orifice too small.
B. Mid to high gas pressure.
C. Target pilot orifice.
D. Orifice size too large. - ANSWER--A. Orifice too small.
, G2 PRACTICE EXAM #2 140 QUESTIONS AND
CORRECT DETAILAED ANSWERS 2024
UPDATED
For flame rectification one of the most important things should be?
A. Flame molecules.
B. Proper grounding plane.
C. Proper air to gas mixture to pilot.
D. Flame rod insulator. - ANSWER--B. Proper grounding plane.
What makes a flame capillary sensor tube prove pilot to main gas valve?
A. Trial for ignition.
B. Glow coil.
C. Pilot flame.
D. Intermittent pilot. - ANSWER--C. Pilot flame.
Since 1996 the most common type of home construction?
A. Platform.
B. Vapour envelope.
C. Solid bricks.
D. Double platform. - ANSWER--B. Vapour envelope.
10) Can a new installation of a fin type pool heater less than 250,000 btu
be install down stair in a house?
A. Yes, if gas piping can support gas input.
B. No.
C. Yes, if pool heater is direct vented.
D. Yes, if poll heater is close to chimney. - ANSWER--B. No.
11) When converting oil furnace to gas what type of atmospheric burner
can be use?
A. Burner tray.
B. Inshot.
C. Ribbon burner.
D. Primary air fan assist burner. - ANSWER--B. Inshot.
12) If the flue gases are remove from the front of the appliance we could
assume that it's a?
A. 1 to 3 flue pasts boiler.
B. 2 to 6 flue pasts boiler.
, G2 PRACTICE EXAM #2 140 QUESTIONS AND
CORRECT DETAILAED ANSWERS 2024
UPDATED
C. 2 to5 flue pasts boiler.
D. 2 to 4 flue pasts boiler. - ANSWER--D. 2 to 4 flue pasts boiler.
13) Can a gas log fire place be installed in a sleeping quarter?
A. Yes, if proper air supply is added.
B. Yes, if the venting is over sized.
C. No, even if new venting is installed.
D. Yes, only if it a bed sitting room. - ANSWER--C. No, even if new venting
is installed.
14) What is the minimum distance that a vent from an appliance with an
input of 110,000 btuh can be from a non-mechanical air supply?
A. 1ft
B. 2ft
C. 3ft
D. 6th - ANSWER--C. 3ft
If the boiler flue gases are remove from the front of the appliance we could
assume that it's a?
A. 1 to 3 flue pasts boiler.
B. 2 to 6 flue pasts boiler.
C. 2 to5 flue pasts boiler.
D. 2 to 4 flue pasts boiler. - ANSWER--D. 2 to 4 flue pasts boiler.
Can a gas log fire place be installed in a sleeping quarter?
A. Yes, if proper air supply is added.
B. Yes, if the venting is over sized.
C. No, even if new venting is installed.
D. Yes, only if it a bed sitting room. - ANSWER--C. No, even if new venting
is installed.
What is the minimum distance that a vent from an appliance with an input
of i 10,000 btuh be from a non-mechanical air supply?
A. 1ft
B. 2ft
C. 3ft
D. 6th - ANSWER--D. 6th
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