Page 93 - Apprentice Manual_Neat

S4-Q104.) Which of the following is not an operating characteristic of an Automatic Day Tank

a.) *To separate water contamination prior to entry into the engine
Correct. It has no water separation capability.
b.) To reduce the lift requirements from a remote tank to the engine
This is one of its primary functions. The tank sits closer to the engine and automatically fills as fuel is
consumed.
c.) To provide a close reliable fuels source for the prime mover
This is one of its primary functions. The tank sits closer to the engine and automatically fills as fuel is
consumed.
d.) To automatically refill itself when the tank runs low
This is one of its primary functions. The tank sits closer to the engine and automatically fills as fuel is
consumed.

S4-Q105.) Day Tank transfer pumps should be powered from what source?

a.) Utility power
This would be ineffective during an outage.
b.) *Emergency power
Correct. If fuel is being consumed and requires more to be transferred, the generator will be
energized and power will be available.
c.) Battery backup power
Not practical. Inverters would be required and the batteries may run down.
d.) Solar power
Not practical. Inverters would be required and it may be night when the outage occurs.

S4-Q106.) When installing a remote cooling system with heat exchanger and radiator, all the following are true
except?

a.) Heat exchanger is located near the engine
Is correct because a heat exchanger close to the engine operates most efficiently in that location.
b.) An auxiliary pump is used to flow coolant through the radiator
Is correct-since the engine cooling system pump is not plumbed on the radiator side of the heat ex
changer, then an auxiliary pump must be used to flow coolant from the radiator to the heat exchanger.
c.) *Exhaust system is built close the heat exchanger
Is the most correct answer because the exhaust system has nothing to do with a radiator/heat
exchanger set up.
d.) Radiator can be installed well above the engine
Is correct because when there is an auxiliary pump, there is not the limiting requirement of the
radiator having to be close to the engine.

S4-Q107.) What component can be used in a day dank whenever there is a possibility of siphoning from the
main storage tank?

a.) *A float switch controlled solenoid
Is correct because a day tank that sits lower than the main tank can siphon and so a float in the
day tank that is solenoid switched to a shut off or antisiphoning valve is used.
b.) A main tank pressure switch
Is wrong because there is no relationship to siphoning and main tank fuel pressure.
c.) An external or internal pressure relief valve
Is wrong because a pressure relief valve is in a day tank system to regulate head pressure from so
siphoning is not an issue here.
d.) A fuel cooler in the tank return line
Is wrong because a fuel cooler in the return line is for fuel temperature control and no siphoning.

Page 85 - EGSA Apprentice Certification Program Study Guide