OIL BURNER LICENSE EXAM NEWEST EXAM |
QUESTIONS AND CORRECT ANSWERS |
ALREADY GRADED A+ | VERIFIED ANSWERS |
JUST RELEASED
Which of those listed below are acceptable CO2 readings for new modern
equipment? ------CORRECT ANSWER---------------10 1/2% to 12 1/2%
What are the two things that must be mixed to have proper combustion? ---
---CORRECT ANSWER----------------Fuel oil vapor
-Combustion air
What two major components make up fuel oil? ------CORRECT ANSWER---
------------Hydrogen and carbon
Increasing fuel pump pressure will _______ flow rate through the nozzle. ---
---CORRECT ANSWER---------------Increase
Incomplete combustion causes? ------CORRECT ANSWER----------------
Soot and smoke
-Poor efficiency
-Low CO2
One advantage to light weight combustion chambers is they: ------
CORRECT ANSWER---------------Cool down quickly
,Flame retention oil burners do not depend as much on _______ for good
combustion as did older burners. ------CORRECT ANSWER---------------Air
Breaking up oil into small droplets is called: ------CORRECT ANSWER-------
--------Atomization
Excess air in the combustion process lowers system efficiency by: ------
CORRECT ANSWER---------------Raising flue gas temperatures
Two properties of light weight combustion chambers are: ------CORRECT
ANSWER---------------Rapid heat up and rapid cool down
What are three types of heat transfer ------CORRECT ANSWER---------------
radiation, conduction, convection
When a boiler or furnace is oversized, off cycle heat loss ______ and
efficiency decreases. ------CORRECT ANSWER---------------Increase
Which are advantages that new and properly adjusted oil fired boilers and
furnaces offer over older units: ------CORRECT ANSWER----------------
Economical operation
-Improved reliability
-Cleaner operation
,Which of the following can cause the oil burner overload protector to trip? --
----CORRECT ANSWER----------------Seized oil pump
-Seized burner motor
When testing an ignition transformer using the arc test method, the arc
should be a minimum of: ------CORRECT ANSWER---------------1/2"
The newer flame retention type combustion heads (flame retention rings): --
----CORRECT ANSWER---------------Are made out of stainless steel and
use air canes to create a tighter flame in the combustion chamber
When is a single stage oil pump used for a fuel oil system? ------CORRECT
ANSWER---------------When the fuel pump is located below the oil storage
tank
A one-pipe system: ------CORRECT ANSWER---------------Must NOT have
the bypass plug inserted in the pump.
When must a two-stage pump be used on an oil fired appliance? ------
CORRECT ANSWER---------------When the fuel pump is locate above the
oil storage tank
A common breach draft for an oil appliance is: ------CORRECT ANSWER---
-------------.03 to -.06
, What is the purpose of a delayed oil valve? ------CORRECT ANSWER-------
--------It delays oil pressure to the nozzle
Which spray pattern is most often used on nozzles rated below 1.0 GPH? --
----CORRECT ANSWER---------------Hollow
What is the purpose of the barometric damper used on an oil fired
appliance? ------CORRECT ANSWER---------------It controls the draft
through the system
What type of lubrication should be used in the burner motor of a high-
pressure gun burner? ------CORRECT ANSWER---------------SAE 20 oil
A properly set up and adjusted oil fire appliance should produce a CO2
measurement of: ------CORRECT ANSWER---------------10% to 12%
A common over the fire draft for an oil appliances ------CORRECT
ANSWER----------------.01 to -.02
Where is a delayed oil valve installed when used with a high pressure gun
burner? ------CORRECT ANSWER---------------After the oil pump before the
nozzle
If the draft through an appliance is too high, what adjustment should be
made? ------CORRECT ANSWER---------------Adjust the barometric damper
to more of an open position
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