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OIL BURNER LICENSE PRACTICE EXAM 2024 WITH 200 QUESTIONS AND 100% VERIFIED ANSWERS
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OIL BURNER LICENSE PRACTICE EXAM 2024 WITH200 QUESTIONS AND 100% VERIFIED ANSWERS
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OIL BURNER LICENSE PRACTICE EXAM 2024 WITH200 QUESTIONS AND 100% VERIFIED ANSWERS
In an electric circuit for the wattage to remain the same if the voltage drops, the amperage must -
CORRECT ANS✔✔ Increase
Atomizing type burners were designed to burn which type of fuel - CORRECT ANS✔✔ Type 2 fuel oil
Pour point problems with outside above ground fuel tanks can be partially relieved by - CORRECT
ANS✔✔ Reducing the pour point of No. 2 fuel oil by blending it with No. 1 fuel oil.
A fuel oil storage tank cannot be installed - CORRECT ANS✔✔ In the furnace room with 5' of heating unit.
The primary purpose of a fuel pump on a high-pressure burner is to - CORRECT ANS✔✔ Deliver oil at a
constant and regulated pressure to the nozzle
If the vacuum reading is substantially above the calculated reading, (with the burner running) the cause
may be - CORRECT ANS✔✔ Plugged fuel filter, Kinked oil supply line, Check valve sticking
With most new flame retention burners, the motor speed is - CORRECT ANS✔✔ 3450
To check for proper nozzle line cut-off, the pressure gauge is installed in the - CORRECT ANS✔✔
Nozzle Port
Fuel units are generally set at the factory at - CORRECT ANS✔✔ 100psi
The oil burner nozzle in a high-pressure burner performs the following functions - CORRECT ANS✔✔
Atomizes the oil
Provides a pattern of oil spray
Delivers a fixed amount of oil
The nozzle flow rate, spray angle and pattern are directly related to - CORRECT ANS✔✔ •Tangential slots
,. Swirl chamber
Orifice
Cold oil or high viscosity problems may be eliminated by - CORRECT ANS✔✔ •Increasing pump
pressure and reducing nozzle size
• Installing a nozzle line pre-heater
The following conditions or elements affect choosing the correct nozzle spray pattern - CORRECT
ANS✔✔ •Air- oil mixing design of burner
• . Shape of the chamber
Which condition affects nozzle spray droplet size? - CORRECT ANS✔✔ Fuel Pump Pressure
To burn one pound of fuel oil, it takes how many pounds of air? - CORRECT ANS✔✔ •14.4 lbs.
A layer of soot 1/16" thick will increase fuel consumption by (Fuel consumption increase by 2 % for each
1/32 of soot) - CORRECT ANS✔✔ 8%
When sizing a combustion chamber for a firing rate of 1.00 gph you should provide a minimum floor
space of (•20 square inches per 0.25 of GPH) - CORRECT ANS✔✔ •Between 80 to 100 square inches
The most common type of burner design in use today is the - CORRECT ANS✔✔ High pressure atomizing
Poor draft due to a faulty chimney may be improved by installing a good - CORRECT ANS✔✔ •Draft
inducer
The pressure differential produced by chimneys is best measured with a draft gauge in - CORRECT
ANS✔✔ Inches of water column
The most important draft measurement to be taken on any oil-fired unit is - CORRECT ANS✔✔ The
draft at the breech
, The draft over the fire
The proper location to install a draft inducer is - CORRECT ANS✔✔ •In the flue pipe between the draft
regulator and the chimney
Using combustion test instruments to measure the composition and temperature of the flue gas as they
leave the heating unit will indicate the - CORRECT ANS✔✔ Steady state efficiency
The holes that are provided in the flue pipe for combustion testing must be - CORRECT ANS✔✔
•Between the heating unit and the draft regulator
When using a pump type smoke tester, ten full strokes are necessary to - CORRECT ANS✔✔ •Draw the
proper amount of flue gas past the paper
The fluid in a CO2 tester is good for about how many tests? - CORRECT ANS✔✔ For about 400 tests
When applying current through a conductor that is wound in coil, the magnetic lines of force created are
used in - CORRECT ANS✔✔ •Solenoid valve
. Relay
.Electric Motor
If in an average 15-amp residential heating circuit, the fuse occasionally blows, you should - CORRECT
ANS✔✔ Install a 15-amp breaker
To determine the "electrical potential" available at any given point in a circuit you should use a: -
CORRECT ANS✔✔ Voltmeter
Oil burner ignition systems normally operate at what primary voltage - CORRECT ANS✔✔ 120 volts
Oil burner ignition transformers operate at what secondary voltage range - CORRECT ANS✔✔ 10,000 to
14,000
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