1|Page
G2 EXAM PREPARATION BUNDLE NEWEST
2025/2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
VERSION!!
A draft hood will prevent what? - . . ANSWER ✔ ✔A down
draft from entering an appliance
A receptacle-mounted ground fault interrupter protects
against? - . . ANSWER ✔ ✔Current flow to ground
When a draft control is required; which of the following
appliances would utilize a single acting type draft regulator
- . . ANSWER ✔ ✔An incinerator
A fire tube boiler had - . . ANSWER ✔ ✔Water outside the
tube and glue gases inside
What is the minimum clearance from combustibles
materials to a single wall vent connector from a conversion
burner with a draft hood - . . ANSWER ✔ ✔9"
,2|Page
What is the point where two metals are joined in a
thermocouple - . . ANSWER ✔ ✔Hot junction
The Ontario building code requires that master bedrooms
must have a minimum ventilation air supply of - . .
ANSWER ✔ ✔20CFM
The primary function of a surge arrestor in the top of a
regulator is to - . . ANSWER ✔ ✔Reduce the opening
speed of the regulator
As the temperature of a thermistor increases, the current
flow through it - . . ANSWER ✔ ✔Increases
As the length of a conductor increases - . . ANSWER ✔
✔It's resistance increases
A propane vaporizer shall not raise the pressure in the
tank in excess of - . . ANSWER ✔ ✔215psig (1500 kPa)
,3|Page
In a domestic heat pump application, what is the
minimum volume of supply air (CFM) per ton of cooling
required - . . ANSWER ✔ ✔450CFM
In domestic air conditioning applications, what is the
minimum volume of supply air (CFM) per ton of cooling - .
. ANSWER ✔ ✔400CFM
What is used to remove the start winding from operation
when the motor reaches approximately 75% of its normal
running speed - . . ANSWER ✔ ✔A potential relay
How often should a t-stay be cleaned - . . ANSWER ✔ ✔At
least once a year
Tubing systems for residential buildings should be
identified utilizing yellow labels or markings with intervals
not exceeding - . . ANSWER ✔ ✔6 ft along the entire
length
To what angle should pipe be beveled if it is to be welded -
. . ANSWER ✔ ✔37.5 degrees
, 4|Page
The temp of a high intensity infrared heater could reach up
to - . . ANSWER ✔ ✔1800 F
What is the minimum ventilation rate in the master
bedroom in a dwelling unit - . . ANSWER ✔ ✔10 L per
second
What is not commonly used as a overpressure protection
device - . . ANSWER ✔ ✔Leak limiter
What purpose will the fan control perform in a furnace - . .
ANSWER ✔ ✔Start the fan, stop the fan
What is the minimum clearance required between
combustible material and a single wall vent connector - . .
ANSWER ✔ ✔6 inches
Polarization in an AC circuit refers to - . . ANSWER ✔
✔The difference between hot, neutral and ground
G2 EXAM PREPARATION BUNDLE NEWEST
2025/2026 COMPLETE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
VERSION!!
A draft hood will prevent what? - . . ANSWER ✔ ✔A down
draft from entering an appliance
A receptacle-mounted ground fault interrupter protects
against? - . . ANSWER ✔ ✔Current flow to ground
When a draft control is required; which of the following
appliances would utilize a single acting type draft regulator
- . . ANSWER ✔ ✔An incinerator
A fire tube boiler had - . . ANSWER ✔ ✔Water outside the
tube and glue gases inside
What is the minimum clearance from combustibles
materials to a single wall vent connector from a conversion
burner with a draft hood - . . ANSWER ✔ ✔9"
,2|Page
What is the point where two metals are joined in a
thermocouple - . . ANSWER ✔ ✔Hot junction
The Ontario building code requires that master bedrooms
must have a minimum ventilation air supply of - . .
ANSWER ✔ ✔20CFM
The primary function of a surge arrestor in the top of a
regulator is to - . . ANSWER ✔ ✔Reduce the opening
speed of the regulator
As the temperature of a thermistor increases, the current
flow through it - . . ANSWER ✔ ✔Increases
As the length of a conductor increases - . . ANSWER ✔
✔It's resistance increases
A propane vaporizer shall not raise the pressure in the
tank in excess of - . . ANSWER ✔ ✔215psig (1500 kPa)
,3|Page
In a domestic heat pump application, what is the
minimum volume of supply air (CFM) per ton of cooling
required - . . ANSWER ✔ ✔450CFM
In domestic air conditioning applications, what is the
minimum volume of supply air (CFM) per ton of cooling - .
. ANSWER ✔ ✔400CFM
What is used to remove the start winding from operation
when the motor reaches approximately 75% of its normal
running speed - . . ANSWER ✔ ✔A potential relay
How often should a t-stay be cleaned - . . ANSWER ✔ ✔At
least once a year
Tubing systems for residential buildings should be
identified utilizing yellow labels or markings with intervals
not exceeding - . . ANSWER ✔ ✔6 ft along the entire
length
To what angle should pipe be beveled if it is to be welded -
. . ANSWER ✔ ✔37.5 degrees
, 4|Page
The temp of a high intensity infrared heater could reach up
to - . . ANSWER ✔ ✔1800 F
What is the minimum ventilation rate in the master
bedroom in a dwelling unit - . . ANSWER ✔ ✔10 L per
second
What is not commonly used as a overpressure protection
device - . . ANSWER ✔ ✔Leak limiter
What purpose will the fan control perform in a furnace - . .
ANSWER ✔ ✔Start the fan, stop the fan
What is the minimum clearance required between
combustible material and a single wall vent connector - . .
ANSWER ✔ ✔6 inches
Polarization in an AC circuit refers to - . . ANSWER ✔
✔The difference between hot, neutral and ground
