TSSA Practice Questions with
Correct Answers
What takes place at the outside of a heat exchanger in a forced air furnace - Answer-
Return air is heated
Which of the following does not have an air circulating blower - Answer-Gravity warm air
system
Atmospheric burners are designed to operate under - Answer-Normal atmospheric
pressure with low gas pressure
What type of flashlight is needed by code to search for a gas leak? - Answer-Class 1
group 11A type
What are transformers which produce a secondary voltage which is lower than the
primary called - Answer-Step down transformers
According to the workplace safety and insurance board, which if the following
statements is part of the workers obligation in all cases of injury and or disease -
Answer-Notify the employer of any injury within eight hours
Which of the following statements is true - Answer-Workers must wear the protective
clothing that the employer instructs them to wear on the job site
Which of the following is true? - Answer-When lifting it is best to lift by bending your
knees and using your leg muscles
Which of the following lists best describes River the key safety categories which should
be considered by gas techs in Ontario - Answer-Personal safety, tools, equipment,
safety of others, site, OHSA, fuel codes
A high intensity infrared heater requires - Answer-No vent
What is the temperature rise in a forced warm air furnace - Answer-The temp difference
between the supply air and the return air
An appliance has a hot surface ignition system, what ignites the burner flame - Answer-
Hot surface
, If the gas/air velocity is too great at the port of an atmospheric burner, the flame will
have a tendency to - Answer-List off the port
An indication of excessive primary air - Answer-Lifting flame
A recessed wall furnace must use which of the following - Answer-"BW" vent
Energy in the form of stationary electric charge is known as - Answer-Static electricity
When rescuing a shock victim you should first - Answer-Free the victim from electricity
contact
What would be the max flame failure response time for a standing pilot - Answer-1 min
and 30 seconds
What does MSDS stand for? - Answer-Material Safety Data Sheet
for basic self protection what do you need? - Answer-A) safety glasses
B) safety shoes/boots
C) gloves
D) all of the above
A ladder must extend above the roof landing by? - Answer-36"
What are the approximate limits of flammability for natural gas ? - Answer-4%-15%
What is the ignition temp of natural gas? - Answer-1300 F
What is the flame temp of natural gas? - Answer-1000 F
What is the air to gas ratio for perfect combustion of propane gas - Answer-23.5 to 1
What is the expansion rate of propane gas - Answer-1:270
What is the heating value of natural gas per cubic foot in Canada - Answer-1000 BTU
Who is the most common testing agency that certifies venting? - Answer-ULC
What is the relief valve pressure setting for a propane tank - Answer-250 psig
Who issues gas technician certificates in Ontario - Answer-Technical standards and
safety authority
What is the flammability range of CO? - Answer-12% to 74%
Correct Answers
What takes place at the outside of a heat exchanger in a forced air furnace - Answer-
Return air is heated
Which of the following does not have an air circulating blower - Answer-Gravity warm air
system
Atmospheric burners are designed to operate under - Answer-Normal atmospheric
pressure with low gas pressure
What type of flashlight is needed by code to search for a gas leak? - Answer-Class 1
group 11A type
What are transformers which produce a secondary voltage which is lower than the
primary called - Answer-Step down transformers
According to the workplace safety and insurance board, which if the following
statements is part of the workers obligation in all cases of injury and or disease -
Answer-Notify the employer of any injury within eight hours
Which of the following statements is true - Answer-Workers must wear the protective
clothing that the employer instructs them to wear on the job site
Which of the following is true? - Answer-When lifting it is best to lift by bending your
knees and using your leg muscles
Which of the following lists best describes River the key safety categories which should
be considered by gas techs in Ontario - Answer-Personal safety, tools, equipment,
safety of others, site, OHSA, fuel codes
A high intensity infrared heater requires - Answer-No vent
What is the temperature rise in a forced warm air furnace - Answer-The temp difference
between the supply air and the return air
An appliance has a hot surface ignition system, what ignites the burner flame - Answer-
Hot surface
, If the gas/air velocity is too great at the port of an atmospheric burner, the flame will
have a tendency to - Answer-List off the port
An indication of excessive primary air - Answer-Lifting flame
A recessed wall furnace must use which of the following - Answer-"BW" vent
Energy in the form of stationary electric charge is known as - Answer-Static electricity
When rescuing a shock victim you should first - Answer-Free the victim from electricity
contact
What would be the max flame failure response time for a standing pilot - Answer-1 min
and 30 seconds
What does MSDS stand for? - Answer-Material Safety Data Sheet
for basic self protection what do you need? - Answer-A) safety glasses
B) safety shoes/boots
C) gloves
D) all of the above
A ladder must extend above the roof landing by? - Answer-36"
What are the approximate limits of flammability for natural gas ? - Answer-4%-15%
What is the ignition temp of natural gas? - Answer-1300 F
What is the flame temp of natural gas? - Answer-1000 F
What is the air to gas ratio for perfect combustion of propane gas - Answer-23.5 to 1
What is the expansion rate of propane gas - Answer-1:270
What is the heating value of natural gas per cubic foot in Canada - Answer-1000 BTU
Who is the most common testing agency that certifies venting? - Answer-ULC
What is the relief valve pressure setting for a propane tank - Answer-250 psig
Who issues gas technician certificates in Ontario - Answer-Technical standards and
safety authority
What is the flammability range of CO? - Answer-12% to 74%
