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UNIT 32 OIL HEAT EXAM | QUESTIONS &ANSWERS (VERIFIED)|LATESTUPDATE|GRADED A+
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UNIT 32 OIL HEAT EXAM | QUESTIONS &ANSWERS (VERIFIED)|LATESTUPDATE|GRADED A+
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HOSMERITUNIT 32 OIL HEAT EXAM | QUESTIONS &ANSWERS
(VERIFIED) | LATEST UPDATE |GRADED A+
If a technician inspects the interior of a combustion chamber and finds large quantities
of unburned oil, he would correctlyconclude that .
a. The nozzle may be too small.
b. The stack switch may be defective.
c. The primary control unit may be defective.
d. Both b and c are correct.
Answer : D
A special tool has been designed to help remove and install nozzles from the burner. It
is called a nozzle wrench and it .
a. has an outer wrench that holds the burner in place, while the inner wrench holds the
nozzle
b. minimizes the chance of cracking the porcelain
c. can only be used on semi-hollow cones
d. both a and b
Answer : D
The number engraved on the nozzle indicates .
a. how many gallons of air per hour the nozzle will deliver regardless of input pressure
b. how many foot pounds of pressure must be used to properly tighten the nozzle
, c. how many gallons of oil per hour the nozzle will deliver at a given input pressure
d. the stock number of the part
Answer : C
Improper combustion can lead to .
a. excessive carbon monoxide production
b. smoke condition around furnace
c. wasted oil
d. all of the above
Answer : D
The grade of fuel usually used in residential and light commercial units is .
a. No. 1
b. No. 2
c. No. 4
d. No. 6
Answer : B
What generates approximately 10,000 volts needed for spark
a. CAD cell
b. nozzle
c. electrodes
d. ignition transformer
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