RHODINA FINALS 1110?

What are the circuits that are necessary to safely fly the aircraft called?

Essential circuits.

What is a component that contains complex electronic circuitry and is easily removed from the aircraft for maintenance purposes?

A removable computer.

What color is the right position light on an aircraft?

Green.

What color is the left position light on an aircraft?

Red.

What do essential lights include?

Minimal flight deck lighting.

How many terminals does a press to test light use?

THREE - 3

In what units are aircraft fuses rated?

Amps.

What is an advantage of using AC in an aircraft over DC?

Greater ease in stepping the voltage up or down.

What types of circuit protectors are there?

Fuses, Circuit breakers, and current limiters.

How should wire clamps be installed?

At intervals less than 24 inches.

For runs of less than what distance is the use of aluminum wire discouraged?

3 Feet

What is the minimum bend radii allowed in a wire bundle run?

10 times the outside diameter of the largest wire.

How far must a wire bundle located near a flight control be installed from the flight control?

At least ½ inch away and with Steel Hardware

What must wires installed in a wheel well be covered with?

A protective sleeve with a drainage hole

What exterior lights are included on large aircraft?

Runway/turnoff lights and Wing illumination lights.

What does EICAS stand for?

Engine Indicating And Crew Alerting System.

What do landing gear indicator lights do?

Inform the pilot of the landing-gear position.

What is the ATA code for electrical power?

24

What is an 'open circuit'?

A condition that creates a circuit disconnection such as a broken wire.

When troubleshooting with a voltmeter, how should it be connected?

In parallel with respect to that portion of the circuit to be measured.

What does BITE stand for?

Built In Test Equipment.

Where are static dischargers used?

On the trailing edges of flight control surfaces.

What does a short refer to when troubleshooting?

There is bare wire or terminal grounding on metal.

What does an open refer to when troubleshooting?

The wire has disconnected in the system.

What are visual signs of a short?

Fuse blown, circuit breaker popped, arcing.

What are we usually measuring when troubleshooting?

Resistance

What types of switches are used on aircraft?

Rotary, momentary contacts, rocker.

Is it acceptable to use a wire bundle as a handle when working?

NO - FALSE

What are the distribution bus systems on multi-engine aircraft?

Parallel, Split, and Split-Parallel

What should the selection of electric cable size be based on?

Current-carrying capacity and allowable voltage drop.

Do micro switches require a lot of pressure to be actuated?

NO - FALSE

In which aircraft systems are micro switches used?

Landing gear motor limits and flight control position indication.

What is the primary function of troubleshooting?

Identify and correct the cause of a failed component.

A wire must be able to carry necessary current without causing what?

Overheating/Burning and causing a greater Voltage Drop than permissible

BPCU uses contractors called what?

Bus Tie Breakers

What is the most common motor that turns electrical energy into mechanical power?**

Electric Motor

What is able to limit the travel on a reversible motor?**

Limit Switches

What is another name for the rotor of a DC motor?**

The Armature

What may happen to a series wound motor attached to no load?**

Overloading (excessive amounts of current drawn by a motor)

In order to change the direction a motor rotates, you must change reverse the connection on the armature or what other component?**

The Field Windings

The most common use of a DC series wound motor is what?**

Starting (Starter Motor)

What is the ATA code for ELECTRICAL POWER**

24

The biggest advantage of a DC series wound motor is what?**

A High Starting Torque

Aircraft systems use synchronous and what other motors?**

Induction Motors

What effect does CEMF have on the applied voltage of a motor?**

It OPPOSES the Applied Voltage

What may be left on the motors commutator if the brush springs are weak?**

Arcing

What type of motors speed is in sync with the inputs voltage/frequency?**

A Synchronous Motor

This motor may also be called a 'constant speed motor' **

Shunt Wound DC Motor

Why does an APU not need a CSD?

APUs are always running at a constant RPM. / FALSE

Which component is not a part of a DC alternator?

Commutator

What does a DC alternator on light aircraft contain?

Rotating Field

What must a small aircraft have to convert DC power to AC power?

INVERTER

What component do DC alternators use to rectify their power to AC?

Diode Pack

What is a GCU?

Generator Control Unit

What portion of a DC alternator receives the induced current?

The Permanent Magnets

How many diodes are used in the rectifier of a DC alternator?

6 Diodes

How does a voltage regulator control the output of a DC alternator?

By varying the resistance of the field circuit

What is used to produce

DC and what is used to produce AC?

Commutator (DC), Slip rings (AC).

What three components are housed in a single-unit generator control?

Voltage regulator, Current cutout,

Current limiter.

How can residual magnetism be restored?

Flashing

What is it called when adjusting voltage regulators inside

generators so they share load equally?

Paralleling

What is placed in the field circuit of a vibrator-type voltage regulator?

A RESISTOR

What is the likely problem if your generator is only putting out 2-3 volts?

Wiring connections, Voltage regulator, Field circuit, ALL OF THE ABOVE.

Must a generator have a voltage that is higher or lower than the battery?

HIGHER

What is the rotating part of a DC generator?

Armature

What situation is suspected if a generator keeps tripping offline?

Low Output Voltage

What is the frequency on large turbine-powered aircraft?

400 Hz

Of the three components in a GCU which will trip the generator "OFFLINE"

Reverse Current Cut-Out