gas tech II Exam UPDATED ACTUAL
Exam Questions and CORRECT Answers
1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping?
- CORRECT ANSWER - 3"
2) Amp meter can read what? - CORRECT ANSWER - Conductor magnetic field.
3) What would be the primary voltage of a furnace? - CORRECT ANSWER - 120/1/60.
4) What is the function of an intermittent pilot? - CORRECT ANSWER - Stay on during
the main burner operation.
5) What is the millivolts power output on a thermocouple closed circuit test? - CORRECT
ANSWER - 10 to 15 millivolts.
6) A pilot with a lazy yellow flame would indicate? - CORRECT ANSWER - Orifice size
too large.
7) For flame rectification one of the most important things should be? - CORRECT
ANSWER - Proper grounding plane.
8) What makes a flame capillary sensor tube prove pilot to main gas valve? - CORRECT
ANSWER - Pilot flame.
9) Since 1996 the most common type of home construction? - CORRECT ANSWER -
Platform.
10) Can a new installation of a fin type pool heater less than 250,000 btu be installed in a house?
- CORRECT ANSWER - Yes, if pool heater is direct vented.
,11) When converting oil furnace to gas what type of atmospheric burner can be use? -
CORRECT ANSWER - Inshot.
12) If the flue gases are remove from the front of the appliance we could assume that it's a? -
CORRECT ANSWER - 2 to 4 flue pasts boiler.
13) Can a gas log set be installed in sleeping quarters? - CORRECT ANSWER - Yes, if
approved by the manufacturer. See clause 7.24.4(c).
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? - CORRECT ANSWER - 3ft
15) If the boiler flue gases are remove from the front of the appliance we could assume that it's
a? - CORRECT ANSWER - 2 to 4 flue pass boiler.
16) Can a gas log fire place be installed in a sleeping quarter? - CORRECT ANSWER -
No, even if new venting is installed.
17) What is the minimum distance that a vent from an appliance with an input of 101,000 btuh
be from a non-mechanical air supply? - CORRECT ANSWER - 3ft
18) On a presssuretol, the main burner starts on? - CORRECT ANSWER - Pressure
differential.
19) On a hydronic heater system what control respond to a load change? - CORRECT
ANSWER - Aquastat.
20) Installation of a propane tank under 1000 USWG what would be the minimum distance from
a regulator to a building opening? - CORRECT ANSWER - 3'
, 21) If an appliance is less than 85% efficient and non positive it would be considered a? -
CORRECT ANSWER - Category 2.
22) For a steam boiler what would be the most important safety control? - CORRECT
ANSWER - Low water cut off.
23) For a low pressure steam boiler what would be the maximum steam pressure setting? -
CORRECT ANSWER - 15psi
24) What would be the minimum distance from a gas meter a dryer vent should terminate? -
CORRECT ANSWER - 3'
25) A appliance draft hood ensures? - CORRECT ANSWER - Zero over fire draft.
26) Proper wiring of an electronic air cleaner is? - CORRECT ANSWER - Parallel with
appliance blower fan.
27) How would you measure humidity? - CORRECT ANSWER - Wet bulb and dry bulb.
28) Which heat is removed or added to cause a change in state without change in temperature? -
CORRECT ANSWER - Latent heat.
29) What is nitrogen known as? - CORRECT ANSWER - Inert gas.
30) Except when permitted what is the minimum clearance to combustible from the top of the
gas refrigerator? - CORRECT ANSWER - 12"
31) On a gas regulator what controls the increase or decrease of gas flow to the appliance? -
CORRECT ANSWER - Restricting element.
Exam Questions and CORRECT Answers
1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping?
- CORRECT ANSWER - 3"
2) Amp meter can read what? - CORRECT ANSWER - Conductor magnetic field.
3) What would be the primary voltage of a furnace? - CORRECT ANSWER - 120/1/60.
4) What is the function of an intermittent pilot? - CORRECT ANSWER - Stay on during
the main burner operation.
5) What is the millivolts power output on a thermocouple closed circuit test? - CORRECT
ANSWER - 10 to 15 millivolts.
6) A pilot with a lazy yellow flame would indicate? - CORRECT ANSWER - Orifice size
too large.
7) For flame rectification one of the most important things should be? - CORRECT
ANSWER - Proper grounding plane.
8) What makes a flame capillary sensor tube prove pilot to main gas valve? - CORRECT
ANSWER - Pilot flame.
9) Since 1996 the most common type of home construction? - CORRECT ANSWER -
Platform.
10) Can a new installation of a fin type pool heater less than 250,000 btu be installed in a house?
- CORRECT ANSWER - Yes, if pool heater is direct vented.
,11) When converting oil furnace to gas what type of atmospheric burner can be use? -
CORRECT ANSWER - Inshot.
12) If the flue gases are remove from the front of the appliance we could assume that it's a? -
CORRECT ANSWER - 2 to 4 flue pasts boiler.
13) Can a gas log set be installed in sleeping quarters? - CORRECT ANSWER - Yes, if
approved by the manufacturer. See clause 7.24.4(c).
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? - CORRECT ANSWER - 3ft
15) If the boiler flue gases are remove from the front of the appliance we could assume that it's
a? - CORRECT ANSWER - 2 to 4 flue pass boiler.
16) Can a gas log fire place be installed in a sleeping quarter? - CORRECT ANSWER -
No, even if new venting is installed.
17) What is the minimum distance that a vent from an appliance with an input of 101,000 btuh
be from a non-mechanical air supply? - CORRECT ANSWER - 3ft
18) On a presssuretol, the main burner starts on? - CORRECT ANSWER - Pressure
differential.
19) On a hydronic heater system what control respond to a load change? - CORRECT
ANSWER - Aquastat.
20) Installation of a propane tank under 1000 USWG what would be the minimum distance from
a regulator to a building opening? - CORRECT ANSWER - 3'
, 21) If an appliance is less than 85% efficient and non positive it would be considered a? -
CORRECT ANSWER - Category 2.
22) For a steam boiler what would be the most important safety control? - CORRECT
ANSWER - Low water cut off.
23) For a low pressure steam boiler what would be the maximum steam pressure setting? -
CORRECT ANSWER - 15psi
24) What would be the minimum distance from a gas meter a dryer vent should terminate? -
CORRECT ANSWER - 3'
25) A appliance draft hood ensures? - CORRECT ANSWER - Zero over fire draft.
26) Proper wiring of an electronic air cleaner is? - CORRECT ANSWER - Parallel with
appliance blower fan.
27) How would you measure humidity? - CORRECT ANSWER - Wet bulb and dry bulb.
28) Which heat is removed or added to cause a change in state without change in temperature? -
CORRECT ANSWER - Latent heat.
29) What is nitrogen known as? - CORRECT ANSWER - Inert gas.
30) Except when permitted what is the minimum clearance to combustible from the top of the
gas refrigerator? - CORRECT ANSWER - 12"
31) On a gas regulator what controls the increase or decrease of gas flow to the appliance? -
CORRECT ANSWER - Restricting element.
