Gas Technician 3 Study TSSA G3 Exam Questions and Correct Solutions
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Gas Technician 3 Study TSSA G3
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Gas Technician 3 Study TSSA G3
Natural gas and propane are: - members of the hydrocarbon family
Natural gas and propane are composed mainly of: - carbon and hydrogen
What is the odorant added to natural gas and propane? - mercaptan
85% to 95% of natural gas is composed of: - methane
Chemical formula for M...
Gas Technician 3 Study TSSA G3 Exam
Questions and Correct Solutions
Natural gas and propane are: - ✔✔ members of the hydrocarbon family
Natural gas and propane are composed mainly of: - ✔✔ carbon and hydrogen
What is the odorant added to natural gas and propane? - ✔✔ mercaptan
85% to 95% of natural gas is composed of: - ✔✔ methane
Chemical formula for Methane: - ✔✔ CH4
Chemical formula for Propane: - ✔✔ C3H8
Chemical formula for Oxygen: - ✔✔ O2
Chemical formula for Nitrogen: - ✔✔ N2
Chemical formula for Water: - ✔✔ H2O
Chemical formula for Carbon Dioxide: - ✔✔ CO2
Chemical formula for Carbon Monoxide: - ✔✔ CO
The approximately percentage of oxygen and nitrogen in air is: - ✔✔ 21% Oxygen and 79% Nitrogen
The properties concerning natural gas and propane is on what page of the codebook? - ✔✔ 351
(T/F) Propane liquid escaping from a container rapidly drops in temperature - ✔✔ True
What is L.E.L.? - ✔✔ The lowest percent of gas in the air-gas mixture that will support combustion
Odorant is added to natural gas at the: - ✔✔ City gate station The maximum flame temperature from the combustion of natural gas with air is: - ✔✔ 3500 F
The two main hydrocarbons which form natural gas are: - ✔✔ methane and ethane
The boiling point of propane is: - ✔✔ -44 F
The boiling point of natural gas is: - ✔✔ -260 F
What is the ignition temperature of propane gas compared to natural gas? - ✔✔ Lower for propane
What is the ignition temperature of propane gas? - ✔✔ 920 to 1020 F
Is natural gas heavier or lighter than air? - ✔✔ lighter
Is propane heavier or lighter than air? - ✔✔ heavier
One imperial gallon of propane weighs: - ✔✔ 5.1 pounds (2.3 kilograms)
At 60°F (15,5° C) a pound of propane produces how many cubic feet of gas? - ✔✔
8.50
Propane shall have a distinctive odour content to ensure it is readily detectable in the atmosphere down to concentrations of: - ✔✔ 20% of the lower explosive limit.
When one pound of propane burns, it releases approximately: - ✔✔ 21,600 Btu
The relative density of liquid propane as compared to water is approximately: - ✔✔ 0.5
Propane is a: - ✔✔ hydrocarbon
As the temperature of liquid propane in a tank increases, the vapour pressure of the
propane: - ✔✔ increases
One boiler horsepower is approximately: - ✔✔ 34.000 Btuh (10 kW) The "specific gravity of a gas (vapour)" is: - ✔✔ the weight of the gas as compared to the weight of an equal volume of air
Name the three elements required for combustion of any fuel? - ✔✔ Oxygen, Heat, and Fuel.
What would be the easiest to control or eliminate in a
leak situation (before a fire occurs) - ✔✔ Shutting off the fuel
The products of perfect combustion of natural gas or propane with oxygen are: - ✔✔ water vapour, carbon dioxide, heat, and light
What air to gas ratio is required for the complete combustion of natural gas? - ✔✔ 10 parts of air to 1 part of gas
What air to gas ratio is required for the complete combustion of propane? - ✔✔ 24 parts of air to 1 part of gas
Air that is mixed with fuel prior to ignition is called: - ✔✔ primary air
Air that is mixed with fuel at the point of combustion and around the flame is called: - ✔✔ secondary air
What is excess air? - ✔✔ Air in the combustion zone in addition to that which is required for combustion.
A long, yellow flame (or luminous/ carbonizing flame) on an atmospheric burner is
caused by: - ✔✔ not premixing air and fuel prior to combustion
The flue gases from the complete combustion of natural gas in air are primarily: - ✔✔ Carbon dioxide, water vapour, nitrogen, excess air, heat and light
Name four properties or characteristics of carbon monoxide gas. - ✔✔ Colourless, Odourless, Tasteless, and Combustible
Name four symptoms of carbon monoxide poisoning. - ✔✔ Dizziness, Headaches, Shortness of breath, and Nausea/ Vomiting
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