G2 EXAM PREP 2025 NEWEST
QUESTIONS AND DETAILED CORRECT
ANSWERS | A+ GRADE VERIFIED
ANSWERS
When sizing capacitors in series, what would be the total
capacitance with 12MFD and 15MFD capacitors?
A. 5.66
B. 6.35
C. 6.97
D. 6.66 Correct Answer D. 6.66 CT = C1 x C2 / C1 + C2
What would be the BTU output of a 10 KW heater
A. 38210
B. 36220
C. 33150
D. 34120 Correct Answer D. 34120
Clocking a 5 foot dial on a gas meter for 63 seconds, what
would be the appliance input?
A. 258,000 BTU
B. 286,000 BTU
C. 268,000 BTU
D. 284,OOO BTU Correct Answer B. 286,000 BTU
What is the sole purpose of an EAC?
A. To remove dirt, humidity and odours.
B. To remove dust, dirt and smoke.
C. To remove humidity from the air.
,D. To remove smoke, dirt and odours Correct Answer B.
To remove dust, dirt and smoke.
What does a gas pressure regulator control?
A. Controls inlet pressure.
B. Controls gas flow.
C. Controls downstream pressure.
D. Locks out gas flow. Correct Answer C. Controls
downstream pressure.
A first stage or high pressure regulator reduces tank
pressure to...?
A. 350 to 10 PSI
B. 375 to 5 PSI
C. 250 to 10 PSI
D. 375 to 10 PSI Correct Answer C. 250 to 10 PSI
On a regulator what measures outlet pressure?
A. Restricting element.
B. Measuring element.
C. Loading element.
D. Spring element. Correct Answer B. Measuring element.
Which gas meter would be used for a small or mid size
commercial installation?
A. Rotary type.
B. Tubing type.
C. Bellow type.
D. Orifice. Correct Answer C. Bellow type.
A fan assist burner is?
,A. Designed for better combustion.
B. Designed for conversion boiler.
C. Designed to overcome appliance friction.
D. Designed to overcome burner friction. Correct Answer
D. Designed to overcome burner friction.
A propane service regulator would normally deliver
pressure at?
A. Pound to 11" wc
B. Ounces to 7" wc
C. Ounces to 11" wc
D. Pound to 7" wc Correct Answer A. Pound to 11" wc
What monitors water flow in a pool heater?
A. Aqua stat
B. Low water cut off
C. Pressure control
D. Flow switch Correct Answer C. Pressure control
A commercial forced air furnace transfers heat in what
medium?
A. Conductive
B. Thermal
C. Convective
D. Radiant Correct Answer C. Convective
Venting spillage can be caused by?
A. Improper combustion air mixture.
B. Excessive elbows in venting system.
C. Cracked heat exchanger.
, D. Blocked condensate furnace drain.0 Correct Answer B.
Excessive elbows in venting system.
When venting spillage occurs and flue gases passes back
through combustion zones what change occurs?
A. Flue gases are hotter and rise faster through chimney.
B. Flue CO2 gases are more efficient.
C. Flue CO2 gases changes to N2.
D. Flue CO2 gases changes to CO. Correct Answer D.
Flue CO2 gases changes to CO.
For a free standing propane range in a large kitchen the
flexible connector may be how long?
A. 10'
B. 6'
C. 4'
D. 8' if range is in the center of the kitchen Correct Answer
B. 6'
An inverted sensor can be found operating what type of
appliances?A. Hot water boiler.
B. Steam water boiler.
C. Domestic hot water storage tank.
D. Domestic potable hot water tank Correct Answer D.
Domestic potable hot water tank
A propane service regulator would normally deliver
pressure at?
A) Pound to 11" wc
B. Ounces to 7" wc
C. Ounces to 11" wc
QUESTIONS AND DETAILED CORRECT
ANSWERS | A+ GRADE VERIFIED
ANSWERS
When sizing capacitors in series, what would be the total
capacitance with 12MFD and 15MFD capacitors?
A. 5.66
B. 6.35
C. 6.97
D. 6.66 Correct Answer D. 6.66 CT = C1 x C2 / C1 + C2
What would be the BTU output of a 10 KW heater
A. 38210
B. 36220
C. 33150
D. 34120 Correct Answer D. 34120
Clocking a 5 foot dial on a gas meter for 63 seconds, what
would be the appliance input?
A. 258,000 BTU
B. 286,000 BTU
C. 268,000 BTU
D. 284,OOO BTU Correct Answer B. 286,000 BTU
What is the sole purpose of an EAC?
A. To remove dirt, humidity and odours.
B. To remove dust, dirt and smoke.
C. To remove humidity from the air.
,D. To remove smoke, dirt and odours Correct Answer B.
To remove dust, dirt and smoke.
What does a gas pressure regulator control?
A. Controls inlet pressure.
B. Controls gas flow.
C. Controls downstream pressure.
D. Locks out gas flow. Correct Answer C. Controls
downstream pressure.
A first stage or high pressure regulator reduces tank
pressure to...?
A. 350 to 10 PSI
B. 375 to 5 PSI
C. 250 to 10 PSI
D. 375 to 10 PSI Correct Answer C. 250 to 10 PSI
On a regulator what measures outlet pressure?
A. Restricting element.
B. Measuring element.
C. Loading element.
D. Spring element. Correct Answer B. Measuring element.
Which gas meter would be used for a small or mid size
commercial installation?
A. Rotary type.
B. Tubing type.
C. Bellow type.
D. Orifice. Correct Answer C. Bellow type.
A fan assist burner is?
,A. Designed for better combustion.
B. Designed for conversion boiler.
C. Designed to overcome appliance friction.
D. Designed to overcome burner friction. Correct Answer
D. Designed to overcome burner friction.
A propane service regulator would normally deliver
pressure at?
A. Pound to 11" wc
B. Ounces to 7" wc
C. Ounces to 11" wc
D. Pound to 7" wc Correct Answer A. Pound to 11" wc
What monitors water flow in a pool heater?
A. Aqua stat
B. Low water cut off
C. Pressure control
D. Flow switch Correct Answer C. Pressure control
A commercial forced air furnace transfers heat in what
medium?
A. Conductive
B. Thermal
C. Convective
D. Radiant Correct Answer C. Convective
Venting spillage can be caused by?
A. Improper combustion air mixture.
B. Excessive elbows in venting system.
C. Cracked heat exchanger.
, D. Blocked condensate furnace drain.0 Correct Answer B.
Excessive elbows in venting system.
When venting spillage occurs and flue gases passes back
through combustion zones what change occurs?
A. Flue gases are hotter and rise faster through chimney.
B. Flue CO2 gases are more efficient.
C. Flue CO2 gases changes to N2.
D. Flue CO2 gases changes to CO. Correct Answer D.
Flue CO2 gases changes to CO.
For a free standing propane range in a large kitchen the
flexible connector may be how long?
A. 10'
B. 6'
C. 4'
D. 8' if range is in the center of the kitchen Correct Answer
B. 6'
An inverted sensor can be found operating what type of
appliances?A. Hot water boiler.
B. Steam water boiler.
C. Domestic hot water storage tank.
D. Domestic potable hot water tank Correct Answer D.
Domestic potable hot water tank
A propane service regulator would normally deliver
pressure at?
A) Pound to 11" wc
B. Ounces to 7" wc
C. Ounces to 11" wc
