FAA O&P- K.K

What could cause an AC electric motor to run too fast

excessive applied voltage or shorted field windings

What tool is used to check a motor or generator armature for shorts and opens under load conditions

a growler

When using a growler, what indication will occur when a short exists between an armature segment

When a metal blade is held over the armature and a short exists in a segment the blade will begin to vibrate and “chatter”

How is the output voltage of an alternator controlled

by varying the field current that excites the alternator

What instruments are used to monitor electrical system loads

ammeters and voltmeters

How would you identify a specific wire in a wire bundle

by the identification code marked on the wire

What tool would you use to determine the size of an unmarked wire

a wire gauge

What color are navigation lights on wingtips

 Left wingtip is red and right wingtip is green

Name several types of electrical devices that would be considered intermittent loads on an electrical system

landing gear, cowl and wing flap motors, radio transmitters

Why would it be necessary to analyze an electrical system before increasing the load on the system

determine that the generator capacity, wire size, and protective device capacity will not be exceeded

What is the relationship between the inside diameter of a conduit and the outside diameter of the wire bundle inside it

the conduit must be 25% larger than the wire bundle

What is the maximum number of terminal lugs that can be placed on a single terminal strip stud

four

What is the proper length for a bonding jumper

as short as possible but long enough to allow free movement of the component

Under what conditions must a switch be derated from its nominal rating

when used with inductive circuits, circuits with high in-rush current, and with DC motors

At what point do electric motors draw the most current

when starting

Circuit breakers are designed to open before what condition occurs

before the wire emits smoke

At what point in a circuit should the protective device be located

as close to the power source as possible

What type of circuit breaker may not be used in an aircraft

an automatic resetting type

What part of an aircraft is identified by a white navigation light

the tail

What could cause an AC electric motor to run too slow

Lack of lubrication, defective wiring, or low applied voltage

What should be done when making bonding or grounding connections between dissimilar materials

use a suitable washer so that any corrosion will occur on the washer

Prior to making a continuity check, what must be done to an electrical circuit

the power must be turned off