Aviation Electrician's Mate Exams

Front 1

Define accelerometer.

Back 1

A device that measures the acceloration to which it is subjected and develops a signal proportional to it.

Front 2

Define access time.

Back 2

The time interval between calling for information from one computer, and the instant that such information is delivered.

Front 3

Define adder.

Back 3

An electronic circuit capable of providing the sum of two numbers entered therein.

Front 4

Define agonic.

Back 4

An imaginary line of the earth's surface passing through points where the magnetic declination is 0 degrees; that is, points where compass points to true north.

Front 5

AMBIENT CONDITIONS

Back 5

PHYSICIAL CONDITIONS OF THE IMMEDIATE ENVIRONMENT; MAY PERTAIN TO TEMPERATURE, HUMIDITY, PRESSURE, ETC.

Front 6

AMMETER

Back 6

AN INSTRUMENT FOR MEASURING THE AMOUNT OF ELECTRON FLOW IN AMPERES.

Front 7

AMPERE

Back 7

BASIC UNIT OF ELECTRICAL CURRENT

Front 8

AMPERE-TURN

Back 8

MAGNETIZING FORCE PRODUCED BY A CURRENT OF 1 AMPERE FLOWING THROUGH A COIL OF 1 TURN.

Front 9

AMPLIDYNE

Back 9

A ROTARY MAGNETIC OR DYNAMOELECTRIC AMPLIFIER USED IN SERVOMECHANISM AND CONTROL APPLICATIONS.

Front 10

AMPLIFICATION

Back 10

PROCESS OF INCREASING THE STRENGTH (CURRENT, POWER, VOLTAGE) OF A SIGNAL.

Front 11

AMPLIFIER

Back 11

DEVICE USED TO INCREASE THE SIGNAL VOLTAGE, CURRENT, OR POWER, GENREALLY COMPOSED OF SOLID STATE CIRCUITRY CALLED A STAGE.

Front 12

AMPLITUDE

Back 12

MAXIMUM INSTANTANEOUS VALUE OF AN ALTERNATING VOLTAGE OR CURRENT, MEASURED IN EITHER THE POSITIVE OR NEGATIVE DIRECTION.

Front 13

ANALOG COMPUTER

Back 13

TYPE OF COMPUTER THAT PROVIDES A CONTINUOUS SOLUTION OF A MATHEMATICAL PROBLEM WITH CONTINUOUSLY CHANGING INPUTS. iNPUTS AND OUTPUTS ARE REPRESENTED BY PHYSICAL QUANTITES THAT MAY BE EASILY GENERATED OR CONTROLLED.

Front 14

AND GATE

Back 14

A LOGIC CIRCUIT HAVING MULTIPLE INPUTS AND A SINGLE OUTPUT, SO DESIGNED THAT THE OUTPUT IS ENERGIZED WHEN (AND ONLY WHEN) EVERY INPUT IS IN IT'S PRESCRIBED SIGNAL STATE.

Front 15

APPARENT DRIFT

Back 15

THE EFFECT OF THE EARHT'S ROTATION THAT CAUSES THE SPINNING AXIS TO APPEAR TO MAKE ONE COMPLETE ROTATION IN ONE DAY. ALSO CALLED APPARENT PRECESSION OR APPARENT ROTATION.

Front 16

DEFINE ARC

Back 16

A FLASH CREATED BY AN ELECTRIC CURRENT IONIZING GAS OR VAPOR

Front 17

DEFINE ARMATURE

Back 17

THE ROTATING PART OF AN ELECTRIC MOTOR OR GENERATOR. MOVING PART OF A RELAY OR VIBRATOR.

Front 18

ATTENUATOR

Back 18

A NETWORK OF RESISTORS USED TO REDUCE VOLTAGE, CURRENT, OR POWER DELIVERED TO A LOAD.

Front 19

ATTRACTION

Back 19

FORCE THAT TENDS TO MAKE TO OBJECTS APPROACH EACH OTHER. ATTRACTION EXISTS BETWEEN TWO UNLIKE MAGNETIC POLES OR BETWEEN TWO UNLIKE STATIC CHARGES.

Front 20

AUTOTRANSFORMER

Back 20

A TRANSFORMER IN WHICH THE PRIMARY AND SECONDARY ARE CONNECTED TOGETHER IN ONE WINDING.

Front 21

AVB

Back 21

AVIONIC BULLETIN

Front 22

AVC

Back 22

AVIONIC CHARGE

Front 23

AXIS

Back 23

A STRAIGHT LINE, EITHER REAL OR IMAGINARY, PASSING THROUGH A BODY, AROUND WHICH THE BODY REVOLVES.

Front 24

AZIMUTH

Back 24

ANGULAR MEASUREMENT IN THE HORIZONTAL PLANE IN A CLOCKWISE DIRECTION.

Front 25

BALLISTICS

Back 25

TERM WHICH REFERS TO THE SCIENCE OF MOTION OF PROJECTILES OR BOMBS.

Front 26

BATTERY

Back 26

TWO OR MORE PRIMARY OR SECONDARY CELLS CONNECTED TOGETHER ELECTRICALLY. THE TERM DOESN'T APPLY TO A SINGLE CELL. A DEVICE FOR CONVERTING CHEMICAL ENERGY INTO ELECTRICAL ENERGY.

Front 27

BATTERY CAPACITY

Back 27

AMOUNT OF ENERGY AVAILABLE FROM A BATTERY.

Front 28

BATTERY CAPACTIY IS EXPRESSED IN WHAT?

Back 28

AMPERE HOURS

Front 29

BIAS

Back 29

IN VACUUM TUBES, THE DIFFERENCE BETWEEN THE CONTROL GRID AND THE CATHODE.

IN TRANSISTORS- BETWEEN BASE AND EMITTER/BASE AND COLLECTOR

IN MAGNETIC AMPLIFIERS- LEVEL OF FLUX DENSITY IN THE CORE UNDER NO-SIGNAL CONDITIONS.

Front 30

BLOCK DIAGRAM

Back 30

DIAGRAM IN WHICH THE MAJOR COMPONENTS OF AN EQUIPMENT OR A SYSTEM ARE REPRESENTED BY SQUARES, RECTANGLES, OR OTHER GEOMETRIC FIGURES, AND THE NORMAL ORDER OF PROGRESSION OF A SIGNAL OR PROGRESSION FLOW IS REPRESENTED BY LINES.

Front 31

BOLOMETER

Back 31

A SMALL RESISTIVE ELEMENT USED IN THE MEASUREMENT OF LOW AND MEDIUM RF POWER.

Front 32

BREAKER POINTS

Back 32

METAL CONTACTS THAT OPEN AND CLOSE A CIRCUIT AT TIMED INTERVALS.

Front 33

BRIDGE CIRCUIT

Back 33

TERM REFERRING TO ANY ONE OF A VARIETY OF ELECTRICAL CIRCUIT NETWORKS, ONE BRANCH OF WHICH THE "BRIDGE" PROPER, CONNECTS TWO POINTS OF EQUAL POTENTIAL, AND HENCE CARRIES NO CURRENT WHEN THE CIRCUIT IS PROPERLY ADJUSTED OR BALANCED.

Front 34

BRUSH

Back 34

CONDUCTING MATERIAL, USUALLY A BLOCK OF CARBON, BEARING AGAINST THE COMMUTATOR OR SLIP RINGS THROUGH WHICH THE CURRENT FLOWS IN OR OUT.

Front 35

BUS BAR

Back 35

PRIMARY POWER DISTRIBUTION POINT CONNECTED TO THE MAIN POWER SOURCE.

Front 36

CABLE

Back 36

EITHER A STRANDED CONDUCTOR (SINGLE CONDUCTOR CABLE) OR A COMBINATION OF CONDUCTORS INSULATED FROM ONE ANOTHER (MULTIPLE CONDUCTOR CABLE) (SMALL SIZES ARE COMMONLY REFERRED TO AS STRANDED CABLE OR CHORDS)

Front 37

CABLE HARNESS

Back 37

GROUP OF WIRES OR RIBBONS OF WIRING USED TO INTERCONNECT ELECTRONIC SYSTEMS AND SUBSYSTEMS.

Front 38

CAGING

Back 38

ACT OF HOLDING A GYRO SO THAT IT CANNOT PRECESS OR CHANGE IT'S ATTITUDE WITH RESPECT TO THE BODY CONTAINING IT.

Front 39

CAPACITOR

Back 39

TWO ELECTRODES OR SETS OF ELECTRODES IN THE FORM OF PLATES, SEPARATED FROM EACH OTHER BY AN INSULATING MATERIAL CALLED THE DIELECTRIC.

Front 40

CAPACITOR-START MOTOR

Back 40

SINGLE PHASE AC INDUCTION MOTOR IN WHICH A STARTING WINDING AND A CAPACITOR ARE PLACED IN SERIES TO START A MOTOR. (VALUES OF XC AND R ARE SUCH THAT THE MAINWINDING AND STARTING WINDING ARE NEARLY 90 DEGREES APART, AND THE STARTING TORQUE IS PRODUCED AS IN A TWO STAGE MOTOR.)

Front 41

CARDIOPULMINARY RESUSCITATION

Back 41

PROCEDURE DESIGNED TO RESTURE BREATHING AFTER CARDIAC ARREST. INCLUDES CLEARING PASSAGES TO LUNGS, AND HEART MASSAGE.

Front 42

CELL

Back 42

SINGLE UNIT THAT TRANSFORMS CHEMICAL ENERGY INTO ELECTRICAL ENERGY. (AS IN A BATTERY) BATTERIES ARE MADE UP OF CELLS.

Front 43

CHOKE COIL

Back 43

COIL OF LOW OHMIC RESISTANCE AND HIGH IMPEDANCE TO ALTERNATING CURRENT.

Front 44

CIRCUIT

Back 44

COMPLETE PATH OF AN ELECTRIC CURRENT

Front 45

CIRCUIT BREAKER

Back 45

ELECTROMAGNETIC OR THERMAL DEVICE THAT OPENS A CIRCUIT WHEN THE CURRENT IN THE CIRCUIT EXCEEDS A PREDETERMINED AMOUNT.

Front 46

CIRCULAR MIL

Back 46

AN AREA EQUAL TO THAT OF A CIRCLE WITH A DIAMETER OF 0.001 INCH. USED FOR MEASURING THE CROSS SECTION OF WIRES.

Front 47

COAXIAL CABLE

Back 47

TRANSMISSION LINE CONSISTING OF TWO CONDUCTORS CONCENTRIC AND INSULATED FROM EACH OTHER.

Front 48

COMMUTATION

Back 48

ACT OF A COMMUTATOR IN CONVERTING GENERATOR OUTPUT FROM AC VOLTAGE TO DC VOLTAGE.

Front 49

COMMUTATOR

Back 49

COPPER SEGMENTS ON THE ARMATURE OF A MOTOR OR GENERATOR. CYLINDRICAL IN SHAPE. PASSES POWER INTO OR FROM THE BRUSHES.

Front 50

COMMUTATOR CHANGES

Back 50

AC TO DC

Front 51

COMMUTATOR

Back 51

MECHANICAL DEVICE THAT REVERSES THE ARMATURE CONNECTIONS IN MOTORS AND GENERATORS AT THE PROPER INSTANT SO THAT CURRENT CONTINUES TO FLOW ONLY IN ONE DIRECTION.

Front 52

COMPARATOR

Back 52

CIRCUIT THAT COMPARES TWO SIGNALS OR VALUES. INDICATES AGREEMENT OR VARIANCE BETWEEN THEM.

Front 53

COMPENSATING WINDINGS

Back 53

WINDINGS EMBEDDED IN SLOTS IN POLE PIECES, CONNECTED IN SERIES WITH THE ARMATURE, WHOSE MAGNETIC FIELD OPPOSES THE ARMATURE FIELD AND CANCELS ARMATURE REACTION.

Front 54

COMPOUND-WOUND MOTORS AND GENERATORS

Back 54

MACHINES THAT HAVE A SERIES FIELD IN ADDITION TO A SHUNT FIELD.

Front 55

SUCH MACHINES HAVE BOTH CHARACTERISTICS OF SERIES AND SHUNT-WOUND MACHINES.

Back 55

COMPOUND-WOUND MOTORS AND GENERATORS.

Front 56

CONDUCTIVITY

Back 56

THE EASE WITH WHICH A SUBSTANCE TRANSMITS ELECTRICITY.

Front 57

COMPUTER

Back 57

MECHANISM OR DEVICE THAT PERFORMS MATHEMATIC OPERATIONS

Front 58

CONDUCTANCE

Back 58

ABILITY OF A MATERIAL TO CONDUCT OR CARRY AN ELECTRIC CURRENT. (EXPRESSED IN mhos)

Front 59

CONDUCTOR

Back 59

ANY MATERIAL SUITABLE FOR CARRYING ELECTRIC CURRENT

Front 60

CORE

Back 60

A MAGNETIC MATERIAL THAT AFFORDS AN EASY PATH FOR MAGNETIC FLUX LINES IN A COIL.

Front 61

COUNTER EMF

Back 61

COUNTER ELECTROMAGNETIC FORCE; AN EMF INDUCED IN A COIL OR ARMATURE THAT OPPOSES THE APPLIED VOLTAGE.

Front 62

COUNTING CIRCUIT

Back 62

A CIRCUIT THAT RECEIVES UNIFORM PULSES REPRESENTING UNITS TO BE COUNTED AND PRODUCES A VOLTAGE IN PROPORTION TO THEIR FREQUENCY.

Front 63

COVALENT BOND

Back 63

TYPE OF LINKAGE BETWEEN ATOMS IN WHICH THE ATOMS SHARE VALENCE ELECTRONS.

Front 64

CPR

Back 64

CARDIOPULMINARY RESUSCITATION

Front 65

CURRENT

Back 65

MOVEMENT OF ELECTRONS PAST A REFERENCE POINT.

PASSAGE OF ELECTRONS THROUGH A CONDUCTOR.
MEASURED IN AMPERES.

Front 66

CURRENT LIMITER

Back 66

A PROTECTIVE DEVICE SIMILAR TO A FUSE, USUALLY USED IN HIGH AMPERAGE CIRCUITS.

Front 67

CYCLE

Back 67

ONE COMPLETE POSITIVE AND ONE COMPLETE NEGATIVE ALTERNATION OF CURRENT OF VOLTAGE.

Front 68

D'ARSONCAL METER MOVEMENT

Back 68

PERMANENT-MAGNET MOVING-CELL MOVEMENT USED IN MOST METERS.

Front 69

DEGREES OF FREEDOM

Back 69

A TERM APPLIED TO GYROS TO DESCRIBE THE NUMBER OF VARIABLE ANGLES REQUIRED TO SPECIFY THE POSITION OF THE ROTOR SPIN AXIX RELATIVE TO THE CASE.

Front 70

DELTA

Back 70

A THREE-PHASE CONNECTION IN WHICH WINDINGS ARE CONNECTED END-TO-END, FORMING A CLOSED LOOP THAT RESEMBLES THE GREEK LETTER DELTA.

Front 71

DEMODULATOR

Back 71

A CIRCUIT USED IN SERVO SYSTEMS TO CONVERT AN AC SIGNAL TO A DC SIGNAL.

Front 72

DIFFERENTIAL

Back 72

MECHANICAL COMPUTING DEVICE USED TO ADD OR SUBTRACT TWO QUANTITIES.

Front 73

DIODE

Back 73

USED AS RECTIFIERS AND DETECTORS

Front 74

DIRECT CURRENT

Back 74

AN ELECTIRC CURRENT THAT FLOWS IN ONE DIRECTION ONLY.

Front 75

DISCRIMINATOR

Back 75

DUAL-IMPUT CIRCUIT IN WHICH THE OUTPUT IS DEPENDENT ON THE VARIATION OF ONE INPUT FROM THE OTHER INPUT OR FROM AN APPLIED STANDARD.