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Oil burner's test questions 1-200 Exam/200 Question and Answers
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Oil burner's test questions 1-200Exam/200 Question and Answers
In an electric circuit for the wattage to remain the same if the voltage drops,
the amperage must - -Increase
-Atomizing type burners were designed to burn which type of fuel - -Type 2
fuel oil
-Pour point problems with outside above ground fuel tanks can be partially
relieved by - -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 - -In the furnace room with 5' of
heating unit.
-The primary purpose of a fuel pump on a high-pressure burner is to - -
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 - -Plugged fuel filter, Kinked oil supply
line, Check valve sticking
-With most new flame retention burners, the motor speed is - -3450
-To check for proper nozzle line cut-off, the pressure gauge is installed in the
- -Nozzle Port
-Fuel units are generally set at the factory at - -100psi
-The oil burner nozzle in a high-pressure burner performs the following
functions - -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 - -
•Tangential slots
. Swirl chamber
Orifice
-Cold oil or high viscosity problems may be eliminated by - -•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 - -•Air-oil mixing design of burner
•. Shape of the chamber
-Which condition affects nozzle spray droplet size? - -Fuel Pump Pressure
-To burn one pound of fuel oil, it takes how many pounds of air? - -•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) - -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) - -
•Between 80 to 100 square inches
-The most common type of burner design in use today is the - -High
pressure atomizing
-Poor draft due to a faulty chimney may be improved by installing a good - -
•Draft inducer
-The pressure differential produced by chimneys is best measured with a
draft gauge in - -Inches of water column
-The most important draft measurement to be taken on any oil-fired unit is -
-The draft at the breech
The draft over the fire
-The proper location to install a draft inducer is - -•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 -
-Steady state efficiency
-The holes that are provided in the flue pipe for combustion testing must be
- -•Between the heating unit and the draft regulator
-When using a pump type smoke tester, ten full strokes are necessary to - -
•Draw the proper amount of flue gas past the paper
-The fluid in a CO2 tester is good for about how many tests? - -For about
400 tests
-When applying current through a conductor that is wound in coil, the
magnetic lines of force created are used in - -•Solenoid valve
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