Final Exam Review

Circuit Status

The status of a circuit, indicated by the color black.

Current Flow

The flow of electrons in a circuit, indicated by the color blue.

Positive Potential

The presence of positive voltage in a circuit, indicated by the colors red and green.

Open Circuit

A circuit with no continuous loop, resulting in no current flow.

Short Circuit

An unintended connection between two points in a circuit, resulting in excessive current flow.

Resistance

The opposition to the flow of electric current in a circuit, measured in ohms.

Crimping

The process of securing a wire to a terminal using a crimping tool.

Wire Stripping

The process of removing insulation from a wire to expose the conductor.

Connector

A device used to join two or more wires or cables together.

Wire ID

The identification of a wire based on its function, number, and size.

Alternator

A device that converts mechanical energy into electrical energy.

Rotor

The rotating part of an alternator that generates a magnetic field.

Stator

The stationary part of an alternator that contains the windings to produce electrical current.

Rectifier

A device that converts alternating current (AC) to direct current (DC).

Capacitor

A device that stores electrical energy and reduces ripple in a circuit.

Voltage Regulator

A device that regulates the output voltage of an alternator.

Ammeter

An instrument used to measure electrical current.

External Power Relay

A relay that controls the connection of external power to an aircraft's electrical system.

Diodes

Electronic components that allow current to flow in one direction and block it in the opposite direction.

Pitot Static System

A system used to measure airspeed, altitude, and vertical speed in an aircraft.

Vacuum Pumps

Devices used to create a vacuum for various aircraft systems.

Micro-switches

Small switches that require only a small amount of movement to activate.

Thermocouples

Temperature sensors that generate a voltage proportional to the temperature difference between two junctions.

MAP (Manifold Absolute Pressure)

A sensor that measures the pressure in the intake manifold of an engine.

Nav Radios

Navigation radios used for GPS, ADF, VHF Nav, and DME.

Transponder

A device that transmits an aircraft's identification and altitude to air traffic control radar systems.

Antennas

Devices used to transmit and receive radio signals.

Modulation

The process of varying a carrier signal to transmit information.

Major Alteration

A significant modification to an aircraft that requires FAA approval.

Minor Alteration

A minor modification to an aircraft that does not require FAA approval.