NORA FINAL REVIEW EXAM QUESTIONS AND ANSWERS
How many BTU's does one gallon of #2 fuel contain? - CORRECT ANSWERS✅✅139,000
when the viscosity of the fuel entering the nozzle increases _____________ increases? - CORRECT
ANSWERS✅✅the flow rate also increases.
Flash point is? - CORRECT ANSWERS✅✅The maximum temp a fuel can be safely stored & handled
without serious fire hazard.
Fire point is? - CORRECT ANSWERS✅✅Ignition point is the lowest temperature at which fuel vapor will
initiate and sustain combustion.
Pour point is? - CORRECT ANSWERS✅✅the lowest temperature at which fuel will flow.
Cloud point is? - CORRECT ANSWERS✅✅the temperature at which wax crystals begin to form.
Using additives can? - CORRECT ANSWERS✅✅Lower pour point and cloud point.
Sulfur exists in? - CORRECT ANSWERS✅✅Varying degrees in all fossil fuels.
Using ULSD all but eliminates? - CORRECT ANSWERS✅✅Smoke and soot formation.
Why is heating oil dyed red? - CORRECT ANSWERS✅✅to differentiate it from on-road diesel fuel.
What is Bioheat a blend of? - CORRECT ANSWERS✅✅A blend of #2 fuel and B100 biodiesel.
What is combustion? - CORRECT ANSWERS✅✅the rapid reaction of a combustible material with
oxygen, involving the production of heat and light.
, What 3 things are required for combustion to take place? - CORRECT ANSWERS✅✅Oxygen, fuel, heat
What three electrical components does the primary control operate? - CORRECT ANSWERS✅✅the
burner motor, ignitor, and oil valve.
An oil burner motor is responsible to create the force needed to turn ______________? - CORRECT
ANSWERS✅✅The burner fan and fuel unit.
The burner motor drives? - CORRECT ANSWERS✅✅The fan and a fuel unit.
The furl units' function is? - CORRECT ANSWERS✅✅Moves fuel from the tank, pressurizes it and
delivers it to the nozzle, provide fast and complete cutoff of fuel on burner shutdown.
What is primary air? - CORRECT ANSWERS✅✅Air that exists through the center opening.
What is secondary air? - CORRECT ANSWERS✅✅Air that exists through the slots that cause the air to
spin enabling the best mix of fuel and air.
What is tertiary air? - CORRECT ANSWERS✅✅Air that exists around and outside of the flame retention
ring and blankets the fuel with air to ensure clean combustion.
The difference between fixed and adjustable heads? - CORRECT ANSWERS✅✅Fixed heads are attached
and have a pre-set tertiary air opening, an adjustable head is attached to the nozzle assembly and is
moved to change the tertiary air opening.
The key final adjustment for most burners is? - CORRECT ANSWERS✅✅Combustion air
Burner fan blades need to be cleaned of debris to ensure? - CORRECT ANSWERS✅✅Proper amount of
combustion air is delivered.
How many BTU's does one gallon of #2 fuel contain? - CORRECT ANSWERS✅✅139,000
when the viscosity of the fuel entering the nozzle increases _____________ increases? - CORRECT
ANSWERS✅✅the flow rate also increases.
Flash point is? - CORRECT ANSWERS✅✅The maximum temp a fuel can be safely stored & handled
without serious fire hazard.
Fire point is? - CORRECT ANSWERS✅✅Ignition point is the lowest temperature at which fuel vapor will
initiate and sustain combustion.
Pour point is? - CORRECT ANSWERS✅✅the lowest temperature at which fuel will flow.
Cloud point is? - CORRECT ANSWERS✅✅the temperature at which wax crystals begin to form.
Using additives can? - CORRECT ANSWERS✅✅Lower pour point and cloud point.
Sulfur exists in? - CORRECT ANSWERS✅✅Varying degrees in all fossil fuels.
Using ULSD all but eliminates? - CORRECT ANSWERS✅✅Smoke and soot formation.
Why is heating oil dyed red? - CORRECT ANSWERS✅✅to differentiate it from on-road diesel fuel.
What is Bioheat a blend of? - CORRECT ANSWERS✅✅A blend of #2 fuel and B100 biodiesel.
What is combustion? - CORRECT ANSWERS✅✅the rapid reaction of a combustible material with
oxygen, involving the production of heat and light.
, What 3 things are required for combustion to take place? - CORRECT ANSWERS✅✅Oxygen, fuel, heat
What three electrical components does the primary control operate? - CORRECT ANSWERS✅✅the
burner motor, ignitor, and oil valve.
An oil burner motor is responsible to create the force needed to turn ______________? - CORRECT
ANSWERS✅✅The burner fan and fuel unit.
The burner motor drives? - CORRECT ANSWERS✅✅The fan and a fuel unit.
The furl units' function is? - CORRECT ANSWERS✅✅Moves fuel from the tank, pressurizes it and
delivers it to the nozzle, provide fast and complete cutoff of fuel on burner shutdown.
What is primary air? - CORRECT ANSWERS✅✅Air that exists through the center opening.
What is secondary air? - CORRECT ANSWERS✅✅Air that exists through the slots that cause the air to
spin enabling the best mix of fuel and air.
What is tertiary air? - CORRECT ANSWERS✅✅Air that exists around and outside of the flame retention
ring and blankets the fuel with air to ensure clean combustion.
The difference between fixed and adjustable heads? - CORRECT ANSWERS✅✅Fixed heads are attached
and have a pre-set tertiary air opening, an adjustable head is attached to the nozzle assembly and is
moved to change the tertiary air opening.
The key final adjustment for most burners is? - CORRECT ANSWERS✅✅Combustion air
Burner fan blades need to be cleaned of debris to ensure? - CORRECT ANSWERS✅✅Proper amount of
combustion air is delivered.
