NORA REVIEW CORRECT
QUESTIONS AND ANSWERS 2025
In a typical oil burner, the motor drives: - Answer - Both the fuel unit and the fan
The key final adjustment for most oil burners is: - Answer - Combustion air
High static air pressure burners: - Answer - Enable boilers and furnaces to have tighter more efficient
heat exchanger passages
Dirt or lint build-up on the burnerfan blades will: - Answer - Reduce the amount of combustion air
One gallon of #2 oil contains approximately: - Answer - 140,000 BTU's
All petroleum products are chemical compounds of: - Answer - Hydrogen and Carbon
The pour point of #2 oil is: - Answer - The lowest temperature at which oil will flow
Flash point of a fuel is an indication of: - Answer - The maximum temperature at which it can be safely
stored and handled without serious fire hazard
The pour point of #2 oil can be reduced by: - Answer - Blending it with kerosene
As heating oil gets colder its viscosity (thickness): - Answer - Increases
A tank without a vent alarm: - Answer - Should not be filled
, Oil lines that contact concrete or dirt should be: - Answer - Coated or sleeved in plastic pipe with no
fittings below the floor
What is the most common source of water in oil tanks? - Answer - Condensation
The home for bacterial growth and sludge in the bottom of the oil tank is: - Answer - Water
Pumping the old oil from a tank being replaced into the new tank: - Answer - Must be avoided because it
can lead to premature tank failure
Fuel units perform the following functions: - 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: - Answer - Use a hand pump to suck the blockage out
If the oil level in the tank is 4 feet below and 10 feet away from the fuel unit and the oil filter is clean the
vacuum reading should be approximately: - Answer - 4 to 7 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have: - Answer - A
suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably have: -
Answer - A clogged oil filter
It is best to connect fuel units as a one-pipe system instead of two-pipe because: - Answer - One pipe
leads to longer filter life and eliminates worries about leaking return lines
If a nozzle is dirty or plugged it should be: - Answer - Replaced
What keeps a nozzle from overheating while the burner is running? - Answer - The amount of air and oil
traveling past it
QUESTIONS AND ANSWERS 2025
In a typical oil burner, the motor drives: - Answer - Both the fuel unit and the fan
The key final adjustment for most oil burners is: - Answer - Combustion air
High static air pressure burners: - Answer - Enable boilers and furnaces to have tighter more efficient
heat exchanger passages
Dirt or lint build-up on the burnerfan blades will: - Answer - Reduce the amount of combustion air
One gallon of #2 oil contains approximately: - Answer - 140,000 BTU's
All petroleum products are chemical compounds of: - Answer - Hydrogen and Carbon
The pour point of #2 oil is: - Answer - The lowest temperature at which oil will flow
Flash point of a fuel is an indication of: - Answer - The maximum temperature at which it can be safely
stored and handled without serious fire hazard
The pour point of #2 oil can be reduced by: - Answer - Blending it with kerosene
As heating oil gets colder its viscosity (thickness): - Answer - Increases
A tank without a vent alarm: - Answer - Should not be filled
, Oil lines that contact concrete or dirt should be: - Answer - Coated or sleeved in plastic pipe with no
fittings below the floor
What is the most common source of water in oil tanks? - Answer - Condensation
The home for bacterial growth and sludge in the bottom of the oil tank is: - Answer - Water
Pumping the old oil from a tank being replaced into the new tank: - Answer - Must be avoided because it
can lead to premature tank failure
Fuel units perform the following functions: - 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: - Answer - Use a hand pump to suck the blockage out
If the oil level in the tank is 4 feet below and 10 feet away from the fuel unit and the oil filter is clean the
vacuum reading should be approximately: - Answer - 4 to 7 inches
If the operating vacuum is significantly less than the calculated vacuum you probably have: - Answer - A
suction line leak
If the operating vacuum reading is significantly above the calculated vacuum you probably have: -
Answer - A clogged oil filter
It is best to connect fuel units as a one-pipe system instead of two-pipe because: - Answer - One pipe
leads to longer filter life and eliminates worries about leaking return lines
If a nozzle is dirty or plugged it should be: - Answer - Replaced
What keeps a nozzle from overheating while the burner is running? - Answer - The amount of air and oil
traveling past it
