TSSA UPDATED Exam Questions and
CORRECT Answers
What would be the max flame failure response time for a standing pilot - CORRECT
ANSWER- 1 min and 30 seconds
What does MSDS stand for? - CORRECT ANSWER- Material Safety Data Sheet
for basic self protection what do you need? - CORRECT ANSWER- A) safety glasses
B) safety shoes/boots
C) gloves
D) all of the above
A ladder must extend above the roof landing by? - CORRECT ANSWER- 36"
What are the approximate limits of flammability for natural gas ? - CORRECT ANSWER-
4%-15%
What is the ignition temp of natural gas? - CORRECT ANSWER- 1300 F
What is the flame temp of natural gas? - CORRECT ANSWER- 1000 F
What is the air to gas ratio for perfect combustion of propane gas - CORRECT ANSWER-
23.5 to 1
What is the expansion rate of propane gas - CORRECT ANSWER- 1:270
What is the heating value of natural gas per cubic foot in Canada - CORRECT ANSWER-
1000 BTU
,Who is the most common testing agency that certifies venting? - CORRECT ANSWER-
ULC
What is the relief valve pressure setting for a propane tank - CORRECT ANSWER- 250 psig
Who issues gas technician certificates in Ontario - CORRECT ANSWER- Technical
standards and safety authority
What is the flammability range of CO? - CORRECT ANSWER- 12% to 74%
What are the products of complete combustion - CORRECT ANSWER- Carbon dioxide,
water vapour, heat
What is needed to start combustion of a fuel - CORRECT ANSWER- Ignition, fuel, air
What is the air needed to operate a natural draft gas appliance safely? - CORRECT
ANSWER- Combustion air, dilution air
What is the boiling point of natural gas - CORRECT ANSWER- -260°F
What is the relative density of propane gas - CORRECT ANSWER- 1.52
What is air comprised of? - CORRECT ANSWER- 80% nitrogen and 20% oxygen
What are the products of incomplete combustion - CORRECT ANSWER- Soot, aldehydes,
carbon monoxide, heat
What type of air is premixed with gas prior to ignition - CORRECT ANSWER- Primary air
What type of air surrounds the flame for proper combustion - CORRECT ANSWER-
Secondary air
, Dilution air is - CORRECT ANSWER- Air to neutralize chimney draft
How many types of fire extinguishers exist - CORRECT ANSWER- 4
What is the weight of one imperial gallon of propane - CORRECT ANSWER-
What is the relief valve pressure set on a propane cylinder - CORRECT ANSWER- 250 psig
What is the approximate filling density of propane containers - CORRECT ANSWER- 80%
At 120 volts and a editable of 25 ohms what would be the amperage - CORRECT ANSWER-
4.8
A reading of OL on a digital multi meter would indicate what - CORRECT ANSWER- Open
circuit
What is the chemical formula for natural gas - CORRECT ANSWER- CH4
When it has been determined that the voltage to a unit is approximately 115 volts which
range should a digital volt meter be set to read at - CORRECT ANSWER- 0-250 volts
On a 120 volt receptacle, the neutral connection terminal is? - CORRECT ANSWER- Silver
What is the most common fire extinguishers used in the work place - CORRECT ANSWER-
A-B-C
Which electrical meter is used to check for continuity - CORRECT ANSWER- Ohm meter
A solenoid valve is activated by an - CORRECT ANSWER- Electro magnetic field
Underground piping shall be tested for leaks as per which table - CORRECT ANSWER- 6.3
CORRECT Answers
What would be the max flame failure response time for a standing pilot - CORRECT
ANSWER- 1 min and 30 seconds
What does MSDS stand for? - CORRECT ANSWER- Material Safety Data Sheet
for basic self protection what do you need? - CORRECT ANSWER- A) safety glasses
B) safety shoes/boots
C) gloves
D) all of the above
A ladder must extend above the roof landing by? - CORRECT ANSWER- 36"
What are the approximate limits of flammability for natural gas ? - CORRECT ANSWER-
4%-15%
What is the ignition temp of natural gas? - CORRECT ANSWER- 1300 F
What is the flame temp of natural gas? - CORRECT ANSWER- 1000 F
What is the air to gas ratio for perfect combustion of propane gas - CORRECT ANSWER-
23.5 to 1
What is the expansion rate of propane gas - CORRECT ANSWER- 1:270
What is the heating value of natural gas per cubic foot in Canada - CORRECT ANSWER-
1000 BTU
,Who is the most common testing agency that certifies venting? - CORRECT ANSWER-
ULC
What is the relief valve pressure setting for a propane tank - CORRECT ANSWER- 250 psig
Who issues gas technician certificates in Ontario - CORRECT ANSWER- Technical
standards and safety authority
What is the flammability range of CO? - CORRECT ANSWER- 12% to 74%
What are the products of complete combustion - CORRECT ANSWER- Carbon dioxide,
water vapour, heat
What is needed to start combustion of a fuel - CORRECT ANSWER- Ignition, fuel, air
What is the air needed to operate a natural draft gas appliance safely? - CORRECT
ANSWER- Combustion air, dilution air
What is the boiling point of natural gas - CORRECT ANSWER- -260°F
What is the relative density of propane gas - CORRECT ANSWER- 1.52
What is air comprised of? - CORRECT ANSWER- 80% nitrogen and 20% oxygen
What are the products of incomplete combustion - CORRECT ANSWER- Soot, aldehydes,
carbon monoxide, heat
What type of air is premixed with gas prior to ignition - CORRECT ANSWER- Primary air
What type of air surrounds the flame for proper combustion - CORRECT ANSWER-
Secondary air
, Dilution air is - CORRECT ANSWER- Air to neutralize chimney draft
How many types of fire extinguishers exist - CORRECT ANSWER- 4
What is the weight of one imperial gallon of propane - CORRECT ANSWER-
What is the relief valve pressure set on a propane cylinder - CORRECT ANSWER- 250 psig
What is the approximate filling density of propane containers - CORRECT ANSWER- 80%
At 120 volts and a editable of 25 ohms what would be the amperage - CORRECT ANSWER-
4.8
A reading of OL on a digital multi meter would indicate what - CORRECT ANSWER- Open
circuit
What is the chemical formula for natural gas - CORRECT ANSWER- CH4
When it has been determined that the voltage to a unit is approximately 115 volts which
range should a digital volt meter be set to read at - CORRECT ANSWER- 0-250 volts
On a 120 volt receptacle, the neutral connection terminal is? - CORRECT ANSWER- Silver
What is the most common fire extinguishers used in the work place - CORRECT ANSWER-
A-B-C
Which electrical meter is used to check for continuity - CORRECT ANSWER- Ohm meter
A solenoid valve is activated by an - CORRECT ANSWER- Electro magnetic field
Underground piping shall be tested for leaks as per which table - CORRECT ANSWER- 6.3
