Nora test questions with complete
solutions graded A+
The key final adjustment for most oil burners is - correct answer ✔✔ combustion air
The high static air pressure created by todays oil burner - correct answer ✔✔ Enable boiler and
furnaces to have tighter more efficient heat
Dirt or lint build-up in the bevel of the burner fan blades will? - correct answer ✔✔ Reduce the
amount of combustion air
How do high pressure atomizing oil burners light oil on fire? - correct answer ✔✔ They
pressurize the oil to turn it from a liquid to droplets, mix them with air, then heat the droplets
until they vaporize then ignite
To change the air ratio for different firing rates with an adjustable head burner you? - correct
answer ✔✔ Adjust the position of the drawer assembly in the Air tube
When burned one gallon of #2 oil releases approximately? - correct answer ✔✔ 140,000 BTU's
The pour point of #2 oil is? - correct answer ✔✔ The lowest temperature at which oil will flow
Sulfuric acid in combustion gasses can? - correct answer ✔✔ Create scale buildup in the heat
exchanger
Flash point of a fuel is an indication of? - correct answer ✔✔ The lowest temperature at which it
will flash but not continue to burn
, As heating oil gets colder its viscosity (thickness)? - correct answer ✔✔ increases
A tank without a vent alarm - correct answer ✔✔ Should not be filled
What is the most common source of water in oil tanks? - correct answer ✔✔ condensation
The home for bacterial growth and sludge in the bottom of the oil tank is? - correct answer ✔✔
water
Pumping the old oil from a tank being replaced into the new tank? - correct answer ✔✔ Is ok as
long as you do not pump the last 50 gallons from the tank bottom
Fuel units (oil pumps) perform the following function? - correct answer ✔✔ Move oil from the
tank to the burner and deliver it at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to? - correct answer ✔✔ Use a hand pump to suck the
blockage out
If the oil level in the tank is 4 foot below and 10 feet away from the fuel unit and the filter is
new the approximate vacuum should be? - correct answer ✔✔ 5 to 6 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have? -
correct answer ✔✔ A Suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably
have? - correct answer ✔✔ A clogged oil filter
solutions graded A+
The key final adjustment for most oil burners is - correct answer ✔✔ combustion air
The high static air pressure created by todays oil burner - correct answer ✔✔ Enable boiler and
furnaces to have tighter more efficient heat
Dirt or lint build-up in the bevel of the burner fan blades will? - correct answer ✔✔ Reduce the
amount of combustion air
How do high pressure atomizing oil burners light oil on fire? - correct answer ✔✔ They
pressurize the oil to turn it from a liquid to droplets, mix them with air, then heat the droplets
until they vaporize then ignite
To change the air ratio for different firing rates with an adjustable head burner you? - correct
answer ✔✔ Adjust the position of the drawer assembly in the Air tube
When burned one gallon of #2 oil releases approximately? - correct answer ✔✔ 140,000 BTU's
The pour point of #2 oil is? - correct answer ✔✔ The lowest temperature at which oil will flow
Sulfuric acid in combustion gasses can? - correct answer ✔✔ Create scale buildup in the heat
exchanger
Flash point of a fuel is an indication of? - correct answer ✔✔ The lowest temperature at which it
will flash but not continue to burn
, As heating oil gets colder its viscosity (thickness)? - correct answer ✔✔ increases
A tank without a vent alarm - correct answer ✔✔ Should not be filled
What is the most common source of water in oil tanks? - correct answer ✔✔ condensation
The home for bacterial growth and sludge in the bottom of the oil tank is? - correct answer ✔✔
water
Pumping the old oil from a tank being replaced into the new tank? - correct answer ✔✔ Is ok as
long as you do not pump the last 50 gallons from the tank bottom
Fuel units (oil pumps) perform the following function? - correct answer ✔✔ Move oil from the
tank to the burner and deliver it at a constant regulated pressure to the nozzle
The best way to clear a clogged oil line is to? - correct answer ✔✔ Use a hand pump to suck the
blockage out
If the oil level in the tank is 4 foot below and 10 feet away from the fuel unit and the filter is
new the approximate vacuum should be? - correct answer ✔✔ 5 to 6 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have? -
correct answer ✔✔ A Suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably
have? - correct answer ✔✔ A clogged oil filter
