GAS FITTER 2 TEST EXAM 2026 QUESTIONS WITH COMPLETE
SOLUTIONS GUARANTEED PASS
. When can an on/off switch be installed in the neutral
wire from an electrical panel to a gas
furnace never
only when it carries 24 volts or less only when the
switch is 3 feet or less from the appliance only when the
supply is 240 volts - ANSWER ->never* only when it
carries 24 volts or less
only when the switch is 3 feet or less from the appliance
only when the supply is 240 volts
A thermostat with a single mercury bulb which controls a
single stage heat, single state cool
unit is a control:
SPST (single pole single throw)
SPDT (single pole double throw)
DPST (single pole single throw)
DPDT (double pole double throw - ANSWER ->SPST
(single pole single throw)
,SPDT (single pole double throw)*
DPST (single pole single throw)
DPDT (double pole double throw
How tight should a thermocouple connection be:
finger tight
1/4 turn past finger tight 1
1/2 turns past finger tight
two turns with a wrench - ANSWER ->finger tight
1/4 turn past finger tight* 1
1/2 turns past finger tight
two turns with a wrench
What happens to the resistance inside an infrared
scanner when the scanner is exposed to infrared
radiation:
30 square inches (1,800mm2)
60 square inches (3,900mm2)
120 square inches (7,800mm2)
180 square inches (11,600mm2) - ANSWER ->30 square
inches (1,800mm2)
60 square inches (3,900mm2)* 120
square inches (7,800mm2)
180 square inches (11,600mm2)
,Air leaves a house through a process called .
infiltration
exfiltration aspiration
expiration - ANSWER ->infiltration
exfiltration* aspiration
expiration
After correctly sizing an air intake opening, the grill or
screen should cover the opening. What is the
minimum size of the mesh on air intake grill? 3/32"
(2mm)
1/8" (3mm)
1/4" (6mm)
1/2" (12mm) - ANSWER ->3/32" (2mm)
1/8" (3mm)
1/4" (6mm)* 1/2"
(12mm)
The most important element required for proper
combustion in a gas appliance is:
carbon dioxide
air
nitrogen
, water vapour - ANSWER ->carbon dioxide
air* nitrogen
water vapour
The best method of removing dust from a house is:
humidification infiltration
filtration
exfiltration - ANSWER ->humidification
infiltration filtration*
exfiltration
To reduce heat loss, the most effective thing to do is:
add attic insulation install new windows seal air
leaks
install a heat recovery unit - ANSWER ->add attic
insulation install new windows seal air leaks*
install a heat recovery unit
The best way to remove odours from a house is to: filter
the air in the house ventilate the house
install mechanical attic ventilation
humidify the air in the house - ANSWER ->filter the air in
the house ventilate the house* install mechanical attic
ventilation
SOLUTIONS GUARANTEED PASS
. When can an on/off switch be installed in the neutral
wire from an electrical panel to a gas
furnace never
only when it carries 24 volts or less only when the
switch is 3 feet or less from the appliance only when the
supply is 240 volts - ANSWER ->never* only when it
carries 24 volts or less
only when the switch is 3 feet or less from the appliance
only when the supply is 240 volts
A thermostat with a single mercury bulb which controls a
single stage heat, single state cool
unit is a control:
SPST (single pole single throw)
SPDT (single pole double throw)
DPST (single pole single throw)
DPDT (double pole double throw - ANSWER ->SPST
(single pole single throw)
,SPDT (single pole double throw)*
DPST (single pole single throw)
DPDT (double pole double throw
How tight should a thermocouple connection be:
finger tight
1/4 turn past finger tight 1
1/2 turns past finger tight
two turns with a wrench - ANSWER ->finger tight
1/4 turn past finger tight* 1
1/2 turns past finger tight
two turns with a wrench
What happens to the resistance inside an infrared
scanner when the scanner is exposed to infrared
radiation:
30 square inches (1,800mm2)
60 square inches (3,900mm2)
120 square inches (7,800mm2)
180 square inches (11,600mm2) - ANSWER ->30 square
inches (1,800mm2)
60 square inches (3,900mm2)* 120
square inches (7,800mm2)
180 square inches (11,600mm2)
,Air leaves a house through a process called .
infiltration
exfiltration aspiration
expiration - ANSWER ->infiltration
exfiltration* aspiration
expiration
After correctly sizing an air intake opening, the grill or
screen should cover the opening. What is the
minimum size of the mesh on air intake grill? 3/32"
(2mm)
1/8" (3mm)
1/4" (6mm)
1/2" (12mm) - ANSWER ->3/32" (2mm)
1/8" (3mm)
1/4" (6mm)* 1/2"
(12mm)
The most important element required for proper
combustion in a gas appliance is:
carbon dioxide
air
nitrogen
, water vapour - ANSWER ->carbon dioxide
air* nitrogen
water vapour
The best method of removing dust from a house is:
humidification infiltration
filtration
exfiltration - ANSWER ->humidification
infiltration filtration*
exfiltration
To reduce heat loss, the most effective thing to do is:
add attic insulation install new windows seal air
leaks
install a heat recovery unit - ANSWER ->add attic
insulation install new windows seal air leaks*
install a heat recovery unit
The best way to remove odours from a house is to: filter
the air in the house ventilate the house
install mechanical attic ventilation
humidify the air in the house - ANSWER ->filter the air in
the house ventilate the house* install mechanical attic
ventilation
