JOURNEYMAN Oil Burner License 2026-2027
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. The primary purpose of a fuel pump in a high pressure burner is to: -
ANSWER -Deliver oil at a constant and regulated pressure to the nozzle
-Move oil from the tank to the pump
-Provide a screen to filter the oil
2. If the vacuum reading is substantially above the calculated reading, (with
the burner running) the cause may be: - ANSWER -Plugged fuel filter
-Kinked oil supply line
-Check valve sticking
3. With most new flame retention burners, the motor speed is: - ANSWER
3400 rpm
4. To check for a proper nozzle line cut-off, the pressure gauge is installed in
the: - ANSWER Nozzle port
5. Fuel units are generally set at the factory at: - ANSWER 100 psi
,6. The oil burner nozzle in a high pressure burner performs the following
functions: - ANSWER -Atomizes the oil
-Provides a pattern of oil spray
-Delivers a fixed amount of oil
7. The nozzle flow rate, spray angle and pattern are directly related to: -
ANSWER -Tangential slots
-Swirl chamber
-Orifice
8. Cold oil or high viscosity problems may be eliminated by: - ANSWER -
Increasing the pump pressure and reducing the nozzle size
-Installing a nozzle line pre-heater
9. The following conditions or elements affect choosing the correct nozzle
spray patterns: - ANSWER -Air-oil mixing design of the burner
-Shape of the chamber
10.Which condition affects nozzle spray droplet size? - ANSWER Fuel pump
pressure
11.To burn one pound of fuel oil, how many pounds of air does it take? -
ANSWER 14.4 lbs
,12.A layer of soot 1/16" thick will increase fuel consumption by: - ANSWER
4%
13.When sizing a combustion chamber for a firing rate of 1.00 gph, you should
provide a minimum floor space of: - ANSWER Between 80 to 100 square
inches
14.The most common type of burner design today is the: - ANSWER High
pressure atomizing
15.Poor draft due to a faulty chimney may be improved by installing a good: -
ANSWER Draft inducer
16.The draft differential produced by chimneys is best measured with a draft
gauge in: - ANSWER Inches of water column
17.The most important draft measurement to be taken on any oil-fired unit is: -
ANSWER -The draft at the breach
-The draft over the fire
18.The proper location to install a draft inducer is: - ANSWER In the flue
pipe between the draft regulator and the chimney
, 19.Using combustion test instruments to measure the composition and
temperature of the flue gas as they leave the heating unit will indicate the: -
ANSWER Steady state efficiency
20.The holes that are provided in the flue pipe for combustion testing must be:
- ANSWER Between the heating unit and the draft regulator
21.When using a pump type smoke tester, 10 full strokes are necessary to: -
ANSWER Draw the proper amount of fluegas past the paper
22.The fluid in a CO2 tester is good for how many tests? - ANSWER For
about 200 tests
23.In an electric circuit in order for the wattage to remain the same if the
voltage drops, the amperage must: - ANSWER Increase
24.When applying current through a conductor that is wound in a coil the
magnetic lines of force created are used in - ANSWER -Solenoid valve
-Relay
-Electric motor
25.If in an average 15 amp residential heating circuit, the fuse occasionally
blows, you should: - ANSWER Use an amp meter to check out the
system
Comprehensive Frequently Tested Questions
With Verified Multiple Choice and Conceptual
Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. The primary purpose of a fuel pump in a high pressure burner is to: -
ANSWER -Deliver oil at a constant and regulated pressure to the nozzle
-Move oil from the tank to the pump
-Provide a screen to filter the oil
2. If the vacuum reading is substantially above the calculated reading, (with
the burner running) the cause may be: - ANSWER -Plugged fuel filter
-Kinked oil supply line
-Check valve sticking
3. With most new flame retention burners, the motor speed is: - ANSWER
3400 rpm
4. To check for a proper nozzle line cut-off, the pressure gauge is installed in
the: - ANSWER Nozzle port
5. Fuel units are generally set at the factory at: - ANSWER 100 psi
,6. The oil burner nozzle in a high pressure burner performs the following
functions: - ANSWER -Atomizes the oil
-Provides a pattern of oil spray
-Delivers a fixed amount of oil
7. The nozzle flow rate, spray angle and pattern are directly related to: -
ANSWER -Tangential slots
-Swirl chamber
-Orifice
8. Cold oil or high viscosity problems may be eliminated by: - ANSWER -
Increasing the pump pressure and reducing the nozzle size
-Installing a nozzle line pre-heater
9. The following conditions or elements affect choosing the correct nozzle
spray patterns: - ANSWER -Air-oil mixing design of the burner
-Shape of the chamber
10.Which condition affects nozzle spray droplet size? - ANSWER Fuel pump
pressure
11.To burn one pound of fuel oil, how many pounds of air does it take? -
ANSWER 14.4 lbs
,12.A layer of soot 1/16" thick will increase fuel consumption by: - ANSWER
4%
13.When sizing a combustion chamber for a firing rate of 1.00 gph, you should
provide a minimum floor space of: - ANSWER Between 80 to 100 square
inches
14.The most common type of burner design today is the: - ANSWER High
pressure atomizing
15.Poor draft due to a faulty chimney may be improved by installing a good: -
ANSWER Draft inducer
16.The draft differential produced by chimneys is best measured with a draft
gauge in: - ANSWER Inches of water column
17.The most important draft measurement to be taken on any oil-fired unit is: -
ANSWER -The draft at the breach
-The draft over the fire
18.The proper location to install a draft inducer is: - ANSWER In the flue
pipe between the draft regulator and the chimney
, 19.Using combustion test instruments to measure the composition and
temperature of the flue gas as they leave the heating unit will indicate the: -
ANSWER Steady state efficiency
20.The holes that are provided in the flue pipe for combustion testing must be:
- ANSWER Between the heating unit and the draft regulator
21.When using a pump type smoke tester, 10 full strokes are necessary to: -
ANSWER Draw the proper amount of fluegas past the paper
22.The fluid in a CO2 tester is good for how many tests? - ANSWER For
about 200 tests
23.In an electric circuit in order for the wattage to remain the same if the
voltage drops, the amperage must: - ANSWER Increase
24.When applying current through a conductor that is wound in a coil the
magnetic lines of force created are used in - ANSWER -Solenoid valve
-Relay
-Electric motor
25.If in an average 15 amp residential heating circuit, the fuse occasionally
blows, you should: - ANSWER Use an amp meter to check out the
system
