ACM-170 UNIT EXAM Flashcards
(34 cards)
- What does a generator do?
converts mechanical energy in to electrical energy.
In the left-hand rule, what does the thumb indicate?
The direction of the conductor
What does a generator do to compensate for armature reaction?
shifts the brushes
A typical starter generator has 2 sets of windings and 1 armature winding. When acting as a generator the current flows through _____.
the shunt
Armature reaction is a result of what?
rotation of the armature
Question #9
B
As the field coil value increases, the amount of energy needed to turn the armature does what?
increases
The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary what?
voltage to the field coil
Question #13
B
How many diodes will be used in an aircraft alternator to convert AC to DC?
6
The frequency of large AC alternator in large aircraft is how many hertz?
400
When new brushes are installed in a generator what sandpaper is used to get them to seat?
000
Do you have slip rings in a generator?
Where would you have them?
No
Only in alternator
Flashing the field is a process that restores residual magnetism to what?
generators with PMA
A CSD unit drives a generator through the use of what?
hydraulics
What does a rectifier do?
converts AC to DC
A voltage regulator controls generator output by?
regulating voltage to the field coil
If you have 2 generators working in parallel, if you close the switch on both generators do they produce the same load, current or resistance?
current
Question #25
B
What is this symbol?
Shielding
What is this symbol?
Zener Diode
What is this symbol?
Ammeter Switch CB
What is this symbol?
Transformer
What is this symbol?
Variable Capacitor
