NORA 2026-2027 Comprehensive Frequently
Tested Questions With Verified Multiple
Choice and Conceptual Actual 100% Correct
Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the most common source of water in oil tanks? - ANSWER
Condensation
2. The home for bacterial growth and sludge in the bottom of the oil tank is: -
ANSWER Water
3. 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
4. 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
5. The best way to clear a clogged oil line is to: - ANSWER Use a hand
pump to suck the blockage out
,6. 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
7. If the operating vacuum is significantly less than the calculated vacuum you
probably have: - ANSWER A suction line leak
8. If the operating vacuum reading is significantly above the calculated
vacuum you probably have: - ANSWER A clogged oil filter
9. 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
10.If a nozzle is dirty or plugged it should be: - ANSWER Replaced
11.What keeps a nozzle from overheating while the burner is running? -
ANSWER The amount of air and oil traveling past it
12.The flow rate stamped on the nozzle is based on: - ANSWER 100 psi
13.The purpose of an oil burner nozzle is to: - ANSWER Atomize and meter
the oil
, 14.Nozzle after-drip can be caused by: - ANSWER Thermal expansion of the
oil in the drawer assembly after shut down
15.To reduce combustion problems caused by cold oil: - ANSWER Increase
the pump pressure and reduce the nozzle size
16.Increasing the fuel pump pressure will: - ANSWER Increase the flow rate
17.Generally, the end of the burner air tube should be: - ANSWER Be flush
with the face of the chamber or recessed approximately ¼"
18.The draft regulator can: - ANSWER Decrease the draft
19.A draft regulator is required because: - ANSWER The draft produced by
the chimney needs to be controlled
20.The most important draft measurement is: - ANSWER Over the fire
21.To get accurate results, a combustion test should be performed: - ANSWER
When the unit reaches steady state operation
22.Excessive draft drop through the heat exchanger indicates: - ANSWER
Heavy soot and scale deposits in the heat exchanger
Tested Questions With Verified Multiple
Choice and Conceptual Actual 100% Correct
Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is the most common source of water in oil tanks? - ANSWER
Condensation
2. The home for bacterial growth and sludge in the bottom of the oil tank is: -
ANSWER Water
3. 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
4. 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
5. The best way to clear a clogged oil line is to: - ANSWER Use a hand
pump to suck the blockage out
,6. 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
7. If the operating vacuum is significantly less than the calculated vacuum you
probably have: - ANSWER A suction line leak
8. If the operating vacuum reading is significantly above the calculated
vacuum you probably have: - ANSWER A clogged oil filter
9. 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
10.If a nozzle is dirty or plugged it should be: - ANSWER Replaced
11.What keeps a nozzle from overheating while the burner is running? -
ANSWER The amount of air and oil traveling past it
12.The flow rate stamped on the nozzle is based on: - ANSWER 100 psi
13.The purpose of an oil burner nozzle is to: - ANSWER Atomize and meter
the oil
, 14.Nozzle after-drip can be caused by: - ANSWER Thermal expansion of the
oil in the drawer assembly after shut down
15.To reduce combustion problems caused by cold oil: - ANSWER Increase
the pump pressure and reduce the nozzle size
16.Increasing the fuel pump pressure will: - ANSWER Increase the flow rate
17.Generally, the end of the burner air tube should be: - ANSWER Be flush
with the face of the chamber or recessed approximately ¼"
18.The draft regulator can: - ANSWER Decrease the draft
19.A draft regulator is required because: - ANSWER The draft produced by
the chimney needs to be controlled
20.The most important draft measurement is: - ANSWER Over the fire
21.To get accurate results, a combustion test should be performed: - ANSWER
When the unit reaches steady state operation
22.Excessive draft drop through the heat exchanger indicates: - ANSWER
Heavy soot and scale deposits in the heat exchanger
