Page 96 - Apprentice Manual_Neat

S5-Q116.) Regarding a governor linkage, if each turn of the adjusting nut yields the same amount of movement
of the arm, the linkage has what type of adjustment?

a.) Direct
The adjustment may directly affect the movement, but this is not the name of linkage.
b.) Indirect
The adjustment directly impacts the linkage and the linkage directly impacts movement of the
governor. There is nothing indirect in this linkage. However, the fact it is directly affected does not
denote its name.
c.) Differential
If each turn produces the same movement, it is not differential.
d.) *Linear
Correct. A graphical representation can be created to show how many turns are require to
produce a desired motion. This would yield a straight line, hence the name, Linear.

S5-Q117.) The output frequency of a magnetic pick-up is determined by:

a.) (# teeth/60)*rpm
Incorrect. 60 is used to account for Revs/min.
b.) (rpm/60)*(rpm/#teeth)
Incorrect. The number of teeth must be in the numerator to account for pulses.
c.) *(#teeth*rpm)/60
Correct. The frequency of pulses in seconds. The number of teeth times the speed
they are traveling (revs/min) divided by 60 will yield pulses per second.
d.) (rpm*60)/#teeth
Incorrect. The number of teeth cannot be in the denominator if pulses are to be counted.

S5-Q118.) One function of a governor is to monitor engine RPM, the other is to:

a.) Control the fuel flow
Governors have nothing to do with fuel flow. That is left to the pump injector or pump carburetor
combinations.
b.) *Provide force to control engine speed
Correct. When RPM decreases the governor must supply the appropriate force to maintain the
desired RPM.
c.) Control engine speed by varying manifold pressure
Governors do not have any actuators within the manifold that could accomplish that task.
d.) Control engine speed by varying the pitch of the cooling fan blades
Cooling fan blade pitch is not varied to control speed.

S5-Q119.) Which of the following does the governor control?

a.) Voltage regulation
This is done by a voltage regulator.
b.) *Load recovery
Correct. By monitoring the engine speed, the governor can determine when a load has
increased or decreased and apply the appropriate amount of force to compensate.
c.) Over-current protection and shutdown
Fuses and circuit breakers accomplish this task.
d.) Power factor
This is accomplished with capacitors, synchronous condensors/capacitors, or other reactive devices.

EGSA Apprentice Certification Program Study Guide - Page 88