NORA - Chapter 4 Fuel Units questions with complete solutions

NORA - Chapter 4 Fuel Units
questions with complete solutions

The purpose of a fuel pump is to __________ oil from the tank to the burner, deliver oil at a
constant pressure to the nozzle and provide clean __________ of the fuel. - ANS ✔✔Lift, Cutoff



The fuel unit contains a set of machined gears to provide both _________ and __________. -
ANS ✔✔Vacuum and Pressure



A __________ filters the incoming oil and helps prevent any contamination from entering the
nozzle. - ANS ✔✔Strainer Screen



Fuel pump pressure is measured in _____________. - ANS ✔✔PSI (Pounds per square inch)



Pump vacuum is measured in _________. - ANS ✔✔HG" (inches of vacuum)



A single stage fuel pump can deliver 5 to 20 times the amount of oil required by the nozzle. The
excess oil is by passed by the pressure regulating system and returned to the_________. - ANS
✔✔Strainer Chamber



The discharge of a fuel pump is typically set between _______ and _________. - ANS ✔✔100
and 200 psi



What does the pressure regulating valve do? - ANS ✔✔Set oil pump pressure to the nozzle



When would you use a by pass plug on a fuel unit? - ANS ✔✔On a 2 pipe system