1|Page
Ontario Gas Technician 1 (G1) Certification Exam
ACTUAL VERIFIED EXAM COMPLETE QUESTIONS
AND CORRECT ANSWERS LATEST UPDATE THIS
YEAR.pdf
A long, yellow flame (or luminous/ carbonizing flame) on
an atmospheric burner is caused by: - Answer-Not
premixing air and fuel prior to combustion
Transformers which produce a secondary voltage that is
higher than the primary are called: - Answer-Step up
transformers
The total current in a parallel circuit will be: - Answer-The
sum of the current passing through each branch of the
circuit
Name the three elements required for combustion of any
fuel? - Answer-Oxygen, Heat, and Fuel.
What is the ignition temperature of propane gas? -
Answer-920 to 1020 F
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(T/F) A quick-disconnect device shall require a shut-off
valve up stream of it - Answer-True
A certificate holder or contractor who is not in agreement
with the Director's ruling after an appeal and hearing: -
Answer-Appeal to the Provincial Divisional Court for a final
ruling
(T/F) A heat exchanger on a forced air furnace in a
dwelling can be repaired if the welder is certified by TSSA
- Answer-True
The unthreaded portion of a piping outlet shall extend how
many inches through a floor? - Answer-2"
Coated copper tubing or corrugated stainless-steel tubing
employed on a 2 psi supply of 150 feet shall be pressure
tested to: - Answer-15 psig for 15 minutes
On a recreational vehicle, all branch connections off the
main gas supply line shall be made: - Answer-Outside the
vehicle
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Given a constant supply voltage, if resistance increases in
a simple circuit, current will: - Answer-Decrease
(T/F) Carbon Monoxide is toxic - Answer-True
The ohmmeter reading across a good fuse that is removed
from the circuit, will be: - Answer-0
Materials that do not easily conduct electricity are called: -
Answer-Insulators
The relative density of liquid propane as compared to
water is approximately: - Answer-1.5
One imperial gallon of propane weighs: - Answer-5.1
pounds (2.3 kilograms)
What are connected to a grounding rod in a properly
installed electrical installation? - Answer-Neutral and
Ground wire + the Electrical panel
, 4|Page
Electrical wires shall be supported: - Answer-Every 5 feet
and within 1 foot of a junction box or turn in direction
What is the normal natural gas building line pressure for a
single-family residence? - Answer-7" water column
Two undesirable products of incomplete combustion are: -
Answer-Carbon monoxide and aldehydes
Which one of the following should be consulted to
determine the specific purpose an appliance is to be used
for? - Answer-Appliance name plate or rating plate
(T/F) No. 14 AWG electrical wire is thicker than No. 16
electrical wire. - Answer-True
What material can gas piping or tubing be constructed of?
- Answer-Steel, Copper, or Plastic
Negative pressure in a building is caused by: - Answer-A
lack of makeup air or combustion air
Ontario Gas Technician 1 (G1) Certification Exam
ACTUAL VERIFIED EXAM COMPLETE QUESTIONS
AND CORRECT ANSWERS LATEST UPDATE THIS
YEAR.pdf
A long, yellow flame (or luminous/ carbonizing flame) on
an atmospheric burner is caused by: - Answer-Not
premixing air and fuel prior to combustion
Transformers which produce a secondary voltage that is
higher than the primary are called: - Answer-Step up
transformers
The total current in a parallel circuit will be: - Answer-The
sum of the current passing through each branch of the
circuit
Name the three elements required for combustion of any
fuel? - Answer-Oxygen, Heat, and Fuel.
What is the ignition temperature of propane gas? -
Answer-920 to 1020 F
,2|Page
(T/F) A quick-disconnect device shall require a shut-off
valve up stream of it - Answer-True
A certificate holder or contractor who is not in agreement
with the Director's ruling after an appeal and hearing: -
Answer-Appeal to the Provincial Divisional Court for a final
ruling
(T/F) A heat exchanger on a forced air furnace in a
dwelling can be repaired if the welder is certified by TSSA
- Answer-True
The unthreaded portion of a piping outlet shall extend how
many inches through a floor? - Answer-2"
Coated copper tubing or corrugated stainless-steel tubing
employed on a 2 psi supply of 150 feet shall be pressure
tested to: - Answer-15 psig for 15 minutes
On a recreational vehicle, all branch connections off the
main gas supply line shall be made: - Answer-Outside the
vehicle
,3|Page
Given a constant supply voltage, if resistance increases in
a simple circuit, current will: - Answer-Decrease
(T/F) Carbon Monoxide is toxic - Answer-True
The ohmmeter reading across a good fuse that is removed
from the circuit, will be: - Answer-0
Materials that do not easily conduct electricity are called: -
Answer-Insulators
The relative density of liquid propane as compared to
water is approximately: - Answer-1.5
One imperial gallon of propane weighs: - Answer-5.1
pounds (2.3 kilograms)
What are connected to a grounding rod in a properly
installed electrical installation? - Answer-Neutral and
Ground wire + the Electrical panel
, 4|Page
Electrical wires shall be supported: - Answer-Every 5 feet
and within 1 foot of a junction box or turn in direction
What is the normal natural gas building line pressure for a
single-family residence? - Answer-7" water column
Two undesirable products of incomplete combustion are: -
Answer-Carbon monoxide and aldehydes
Which one of the following should be consulted to
determine the specific purpose an appliance is to be used
for? - Answer-Appliance name plate or rating plate
(T/F) No. 14 AWG electrical wire is thicker than No. 16
electrical wire. - Answer-True
What material can gas piping or tubing be constructed of?
- Answer-Steel, Copper, or Plastic
Negative pressure in a building is caused by: - Answer-A
lack of makeup air or combustion air
