SIMULADOR 5 EXAMEN LICENCIA TLA SOLO SISTEMAS ELECTRICOS (INGLES)

Frage 1 von 150

1

A series-wound dc electric motor will normally require

Wähle eine der folgenden:

"more current at high RPM than at low RPM."
approximately the same current throughout its operating range of speed.
"more current at low RPM than at high RPM."
high resistance will develop in stripping nicks.

Erklärung

Frage 2 von 150

1

A voltage regulator controls generator output by

Wähle eine der folgenden:

"introducing a resistance in generator-to-battery lead in the event of overload."
shorting out field coil in the event of overload.
Series wound.
varying current flow to generator field coil.

Erklärung

Frage 3 von 150

1

Aluminum wire must be stripped very carefully because

Wähle eine der folgenden:

high resistance will develop in stripping nicks.
stripping nicks can cause short circuits.
individual strands will break easily after being nicked.
to prevent circuit failure due to terminal disconnection.

Erklärung

Frage 4 von 150

1

An ammeter in a battery charging system is for the purpose of indicating the

Wähle eine der folgenden:

amperage available for use.
total amperes being used in the airplane.
rate of current used to charge the battery.
stripping nicks can cause short circuits.

Erklärung

Frage 5 von 150

1

For general electrical use in aircraft, the acceptable method of attaching a terminal to a wire is by

Wähle eine der folgenden:

crimping.
soldering.
crimping and soldering.
Rolling

Erklärung

Frage 6 von 150

1

How can it be determined if a transformer winding has some of its turns shorted together?

Wähle eine der folgenden:

Measure the input voltage with an ohmmeter.
The output voltage will be high.
The transformer will get hot in normal operation.
A high internal resistance condition.

Erklärung

Frage 7 von 150

1

How does the magnetic brake used to stop rotation of an electric motor armature operate?

Wähle eine der folgenden:

"Centrifugal force releases a rotating brake cog from a stationary notch when the armature reaches a certain speed and magnetic force re-engages the cog when the electrical power is turned off."
A friction brake is applied by a magnet and released by a spring.
approximately the same current throughout its operating range of speed.
A friction brake is applied by a spring and released by a magnet.

Erklärung

Frage 8 von 150

1

"How many cycles of ac voltage are produced in a six-pole alternator of the revolving-field type
for each revolution of the rotor?"

Wähle eine der folgenden:

Four.
Three.
Six.
Two

Erklärung

Frage 9 von 150

1

If a generator is equipped with a vibrator-type voltage regulator, the actual time the voltage regulator points remain open

Wähle eine der folgenden:

depends on the load carried by the generator.
is controlled by the reverse-current cutout relay point clearance.
is increased when the external load is greater than the generator output.
motor can be operated in either direction.

Erklärung

Frage 10 von 150

1

"If the reverse current cutout relay contact points fail to open after the generator output has dropped below battery potential, current will flow through the generator armature"

Wähle eine der folgenden:

"in the normal direction and through the shunt field opposite the normal direction."
and the shunt field opposite the normal direction.
"Centrifugal force releases a rotating brake cog from a stationary notch when the armature reaches a certain speed and magnetic force re-engages the cog when the electrical power is turned off."
opposite the normal direction and through the shunt field in the normal direction.

Erklärung

Frage 11 von 150

1

One purpose of a growler test is to determine the presence of

Wähle eine der folgenden:

an out-of-round commutator.
a broken field lead.
a shorted armature.
power output of the motor can be more closely controlled.

Erklärung

Frage 12 von 150

1

The commutator of a generator

Wähle eine der folgenden:

changes direct current produced in the armature into alternating current as it is taken from the armature.
changes alternating current produced in the armature into direct current as it is taken from the armature.
"reverses the current in the field coils at the proper time in order to produce direct current."
total amperes being used in the airplane.

Erklärung

Frage 13 von 150

1

The method most often used in overcoming the effect of armature reaction is through the use of

Wähle eine der folgenden:

interpoles.
shaded poles.
drum-wound armatures in combination with a negatively connected series field.
opposite the normal direction and through the shunt field in the normal direction.

Erklärung

Frage 14 von 150

1

The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the

Wähle eine der folgenden:

strength of the magnetic field.
number of conductors in the armature.
speed at which the armature rotates.
amperes and frequency must both be equal.

Erklärung

Frage 15 von 150

1

The pole pieces or shoes used in a dc generator are a part of the

Wähle eine der folgenden:

armature assembly.
field assembly.
brush assembly.
Inverter drive motor.

Erklärung

Frage 16 von 150

1

The starting current of a series-wound dc motor, in passing through both the field and armature windings, produces a

Wähle eine der folgenden:

low starting torque.
speed slightly higher when unloaded.
high starting torque.
Starter motor.

Erklärung

Frage 17 von 150

1

The type of electric wire terminals used for most aircraft applications, in addition to providing good current carrying capabilities, are designed primarily

Wähle eine der folgenden:

to prevent circuit failure due to terminal disconnection.
for uncomplicated and rapid circuit connection and disconnection.
for permanent connection to the circuit.
Reduce field strength.

Erklärung

Frage 18 von 150

1

To test generator or motor armature windings for opens,

Wähle eine der folgenden:

"place armature in a growler and connect a 110V test light on adjacent segments; light should light."
check adjacent segments on commutator with an ohmmeter on the high resistance scale.
use a 12/24V test light between the armature core segments and the shaft.
rate of current used to charge the battery.

Erklärung

Frage 19 von 150

1

To what depth is the mica insulation between the commutator bars of a dc generator undercut?

Wähle eine der folgenden:

One-half the width of the mica.
Equal to twice the width of the mica.
Equal to the width of the mica.
Three-half the width of the mica.

Erklärung

Frage 20 von 150

1

What is a cause of generator brush arcing?

Wähle eine der folgenden:

"Seating brushes with No. 000 sandpaper.
"Carbon dust particles.
Low spring tension.
amperes and voltage must both be equal.

Erklärung

Frage 21 von 150

1

What is the color and orientation of the position lights for navigation on civil airplanes?

Wähle eine der folgenden:

Left side - green, right side - red, rear aft - white.
Left side - red, right side - green, rear aft - white.
"Left side - white, right side - green, rear aft - red."
Left side - White, right side - red, rear aft - white.

Erklärung

Frage 22 von 150

1

What is the minimum bend radius for an electrical wire bundle?

Wähle eine der folgenden:

Forty times the outside diameter of the bundle.
Five times the outside diameter of the bundle.
Fifteen times the outside diameter of the bundle.
Ten times the outside diameter of the bundle.

Erklärung

Frage 23 von 150

1

What is the most accurate type of frequency- measuring instrument?

Wähle eine der folgenden:

Integrated circuit chip having a clock circuit.
Electrodynamometers using electromagnetic fields.
Electromagnets using one permanent magnet.
checked with a milliamp ammeter.

Erklärung

Frage 24 von 150

1

What is the principal advantage of the series- wound dc motor?

Wähle eine der folgenden:

High starting torque.
Suitable for constant speed use.
Low starting torque.
speed of the motor can be more closely controlled.

Erklärung

Frage 25 von 150

1

When ac generators are operated in parallel, the

Wähle eine der folgenden:

amperes and frequency must both be equal.
frequency and voltage must both be equal.
amperes and voltage must both be equal.
shaded poles.

Erklärung

Frage 26 von 150

1

When approved, splices may be used to repair manufactured harnesses or installed wiring. The maximum number of splices permitted between any two connectors is

Wähle eine der folgenden:

Four
two.
three.
one.

Erklärung

Frage 27 von 150

1

Which motor would be most likely to have an armature brake?

Wähle eine der folgenden:

Starter motor.
Landing light retraction motor.
Inverter drive motor.
field assembly.

Erklärung

Frage 28 von 150

1

Which of the following is most likely to cause thermal runaway in a nickel-cadmium battery?

Wähle eine der folgenden:

A high internal resistance condition.
Excessive current draw from the battery.
"Constant current charging of the battery to more than 100 percent of its capacity."
has at least a residual charge before removing it from the circuit.

Erklärung

Frage 29 von 150

1

Which type of dc generator is not used as an airplane generator?

Wähle eine der folgenden:

Externally grounded.
Series wound.
Compound wound.
Shunt-type ohmmeter.

Erklärung

Frage 30 von 150

1

Electric wire terminals for most aircraft applications must be what type?

Wähle eine der folgenden:

Slotted.
Hook.
Ring.
Tappered

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Frage 31 von 150

1

How should the splices be arranged if several are to be located in an electrical wire bundle?

Wähle eine der folgenden:

Staggered along the length of the bundle.
Grouped together to facilitate inspection.
Enclosed in a conduit.
soldering.

Erklärung

Frage 32 von 150

1

In a generator, what eliminates any possible sparking to the brush guides caused by the movement of the brushes within the holder?

Wähle eine der folgenden:

The brush pigtail.
Brush spring tension.
Undercutting the mica on the commutator.
A friction brake is applied by a magnet and released by a spring.

Erklärung

Frage 33 von 150

1

Some electric motors have two sets of field windings wound in opposite directions so that the

Wähle eine der folgenden:

speed of the motor can be more closely controlled.
power output of the motor can be more closely controlled.
motor can be operated in either direction.
a broken field lead.

Erklärung

Frage 34 von 150

1

What type of instrument is used for measuring very high values of resistance?

Wähle eine der folgenden:

Megohmmeter.
Shunt-type ohmmeter.
Multimeter.
"introducing a resistance in generator-to-battery lead in the event of overload."

Erklärung

Frage 35 von 150

1

When a diode is checked for an open circuit or a short circuit, it should be

Wähle eine der folgenden:

in the circuit.
disconnected from the circuit.
Electromagnets using one permanent magnet.
checked with a milliamp ammeter.

Erklärung

Frage 36 von 150

1

When handling a high voltage capacitor in an electrical circuit, be sure it

Wähle eine der folgenden:

has a full charge before removing it from the circuit.
has at least a residual charge before removing it from the circuit.
is fully discharged before removing it from the circuit.
Excessive current draw from the battery.

Erklärung

Frage 37 von 150

1

Which of the following is not one of the purposes of interpoles in a generator?

Wähle eine der folgenden:

Reduce field strength.
Overcome armature reaction.
Reduce arcing at the brushes.
stripping nicks can cause short circuits.

Erklärung

Frage 38 von 150

1

¿Que actividades realiza el relé de protección diferencial?

Wähle eine der folgenden:

Abre el relé de generador y cierra el relé de cruce
Abre el relé de cruce y cierra el relé de generador
Compara el voltaje que sale del generador con el voltaje que llega al punto de distribución
Compara la corriente que sale del generador con la corriente que llega al punto de distribución

Erklärung

Frage 39 von 150

1

A battery-generator system provides direct current. On installations requiring alternating current from the battery-generator system, it is necessary to have

Wähle eine der folgenden:

a transformer.
a magnetically operated switch.
a variable resistor between the battery and generator.
an inverter.

Erklärung

Frage 40 von 150

1

A certain switch is described as a single-pole, double-throw switch (SPDT). The throw of a switch indicates the number of

Wähle eine der folgenden:

circuits each pole can complete through the switch.
places at which the operating device (toggle, plunger, etc.) will come to rest and at the same time open or close a circuit.
terminals at which current can enter or leave the switch.
are useful where only temporary overloads are normally encountered.

Erklärung

Frage 41 von 150

1

A circuit breaker is installed in an aircraft electrical system primarily to protect the

Wähle eine der folgenden:

circuit and should be located as close to the source as possible.
circuit and should be located as close to the unit as possible.
electrical unit in the circuit and should be located as close to the source as possible.
"To prevent short circuits in the motor field windings."

Erklärung

Frage 42 von 150

1

A circuit protection device called a current limiter is essentially a slow-blow fuse and is designed to be used in

Wähle eine der folgenden:

400 cycle AC circuits.
heavy power circuits.
starter-generator circuits.
Pass through conduit.

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Frage 43 von 150

1

A CSD unit drives a generator through the use of

Wähle eine der folgenden:

a synchronous electric motor.
an infinitely variable mechanical gearing system.
a variable hydraulic pump and hydraulic motor.
increase flux concentration.

Erklärung

Frage 44 von 150

1

A relay is

Wähle eine der folgenden:

a magnetically operated switch.
a device which converts electrical energy to kinetic energy.
any conductor which receives electrical energy and passes it on with little or no resistance.
the frequency of alternating current.

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Frage 45 von 150

1

A voltage regulator controls generator voltage by changing the

Wähle eine der folgenden:

resistance in the generator output circuit.
current in the generator output circuit.
resistance of the generator field circuit.
"decreasing the output of the high generator to equal the output of the low generator."

Erklärung

Frage 46 von 150

1

Aircraft electrical junction boxes located in a fire zone are usually constructed of

Wähle eine der folgenden:

asbestos.
cadmium-plated steel.
Iron steel copper
stainless steel.

Erklärung

Frage 47 von 150

1

Aircraft fuse capacity is rated in

Wähle eine der folgenden:

volts.
ohms.
amperes.
Watts

Erklärung

Frage 48 von 150

1

Aircraft which operate only ac generators (alternators) as a primary source of electrical power normally provide current suitable for battery charging through the use of

Wähle eine der folgenden:

a stepdown transformer and a rectifier.
an inverter and a voltage- dropping resistor.
a dynamotor with a half- wave dc output.
a variable resistor between the battery and generator.

Erklärung

Frage 49 von 150

1

Algunos motores eléctricos tienen dos juegos de embobinados de campo en direcciones opuestas de forma tal que

Wähle eine der folgenden:

La velocidad del motor pueda ser controladas de más cerca.
La potencia de salida del motor pueda ser controlada de mas cerca.
El motor pueda ser operado en cualquier dirección.
Las revoluciones de salida del motor pueda ser controlada de mas cerca.

Erklärung

Frage 50 von 150

1

Bonding connections should be tested for

Wähle eine der folgenden:

resistance value.
amperage value.
reactance.
Alternator

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Frage 51 von 150

1

Certain transport aircraft use ac electrical power for all normal operation and battery furnished dc electrical power for standby emergency use. In aircraft of this type that operate no dc generators, the batteries are kept charged by

Wähle eine der folgenden:

inverters which use the aircraft's ac generators as a source of power.
alternators which use the aircraft's generators as a source of power.
rectifiers which use the aircraft's ac generators as a source of power.
residual voltage.

Erklärung

Frage 52 von 150

1

Circuits that must be operated only in an emergency or whose inadvertent activation could endanger a system frequently employ

Wähle eine der folgenden:

guarded switches.
push-pull-type circuit breakers only (no switches).
spring-loaded to off toggle or rocker switches.
only locknuts have been used for terminal attachment to the studs.

Erklärung

Frage 53 von 150

1

CSD driven generators are usually cooled by

Wähle eine der folgenden:

oil spray.
an integral fan.
both ram air and an integral fan.
battery current to excite the field.

Erklärung

Frage 54 von 150

1

Cuál es la ventaja principal de un motor de corriente continua (direct current, DC) embobinado en serie?

Wähle eine der folgenden:

Velocidad variable
Adecuado para uso a velocidad constante.
Baja torsión de arranque.
Alta torsión de arranque.

Erklärung

Frage 55 von 150

1

Cuál es una causa de que arqueen las brochas del generador?

Wähle eine der folgenden:

"Asentar las brochas con papel de lija número 000.
"Partículas de polvo de carbón.
Poca tensión en los resortes.
Polvo y condiciones ambientales

Erklärung

Frage 56 von 150

1

Cuando dos o más generadores de corriente alterna se van a conectar en paralelo, se deben cumplir las siguientes condiciones antes de su conexión:

Wähle eine der folgenden:

Igual corriente, igual frecuencia, igual fase e igual sincronismo
igual sincronismo, igual corriente, igual voltaje e igual frecuencia
Igual factor de potencia, igual fase, igual voltaje e igual frecuencia
Igual fase, igual voltaje, igual frecuencia e igual sincronismo

Erklärung

Frage 57 von 150

1

Cuando generadores de corriente alterna son operados en paralelo,

Wähle eine der folgenden:

Los amperios y la frecuencia deben ser ambas iguales.
La frecuencia y el voltaje deben ser ambos iguales.
Los amperios y el voltaje deben ser ambos iguales.
Torsión baja de arranque.

Erklärung

Frage 58 von 150

1

Cuando la tensión de salida de un generador baja de un valor determinado (unos 107 voltios aproximadamente) se dice que el generador tiene bajo voltaje. El bajo voltaje puede tener su origen en:

Wähle eine der folgenden:

Exceso de revoluciones de la C.S.D
Barra defectuosa
Exceso de revoluciones del motor
Batería descargada

Erklärung

Frage 59 von 150

1

During inspection of an anticollision light installation for condition and proper operation, it should be determined that

Wähle eine der folgenden:

electrical or mechanical interconnections are provided so that the anticollision light will operate at all times that the position light switch is in the ON position.
an appropriately rated fuse is in position at the light to protect the connecting wiring against electrical faults.
the anticollision light can be operated independently of the position lights.
any conductor which receives electrical energy and passes it on with little or no resistance.

Erklärung

Frage 60 von 150

1

During inspection of the terminal strips of an aircraft electrical system, it should be determined that

Wähle eine der folgenden:

only locknuts have been used for terminal attachment to the studs.
the terminal studs are anchored against rotation.
only plain nuts and lockwashers have been used for terminal attachment to the studs.
output voltage must be maintained at a constant value.

Erklärung

Frage 61 von 150

1

El APU posee como backup para encendido:

Wähle eine der folgenden:

"Bateria y Bomba de Combustible de DC"
Bateria del Avion
HMG
IDG

Erklärung

Frage 62 von 150

1

El APU proporciona al avión:

Wähle eine der folgenden:

Potencia Neumática
Potencia Eléctrica
Potencia Hidráulica
"Potencia Neumática y
Eléctrica"

Erklärung

Frage 63 von 150

1

El avión se puede alimentar eléctricamente externamente por medio de:

Wähle eine der folgenden:

APU
GPU (Ground Power Unit)
Arrancador Neumatico.
Arrancador Eléctrico.

Erklärung

Frage 64 von 150

1

El control del correcto funcionamiento de la C.S.D. lo observamos en la cabina en los siguientes indicadores:

Wähle eine der folgenden:

Frecuencimetro del generador asociado a la CSD, Luces indicadoras de CSD, Relé de la Barra de Alterna
Relé de la barra directa – Frecuencimetro del generador asociado a la CSD – Luces indicadoras de CSD
Termómetro de temperatura de aceite – Frecuencimetro del generador asociada con la CSD – Luces indicadoras de CSD
Frecuencimetro del generador asociado con la CSD – Luces indicadoras de CSD- Regulador de voltaje

Erklärung

Frage 65 von 150

1

El generador de corriente alterna del tipo sin escobillas no necesita ningún tipo de conexión eléctrica, entre la parte giratoria y no giratoria del mismo, debido a:

Wähle eine der folgenden:

La ley de Lenz
La ley de Ampere
La ley de Faraday
La ley de Coulomb

Erklärung

Frage 66 von 150

1

El generador del Avion genera con una frecuencia de:

Wähle eine der folgenden:

60hz
50hz
120hz
400hz

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Frage 67 von 150

1

El reparto de la carga reactiva de cada generador es controlado por:

Wähle eine der folgenden:

El relé del generador
El relé de la barra de enlace
El regulador de voltaje
El APU

Erklärung

Frage 68 von 150

1

El sistema eléctrico del avión permite utilizar la batería en tierra para:

Wähle eine der folgenden:

Operar los sistemas utilitarios
Mantener la temperatura de cabina.
Mantener el sistema de combustible encendido siempre
Mantener la presión de la cabina.

Erklärung

Frage 69 von 150

1

Electric circuits are protected from overheating by means of

Wähle eine der folgenden:

thermocouples.
shunts.
fuses.
cadmium-plated steel.

Erklärung

Frage 70 von 150

1

Electric wiring installed in aircraft without special enclosing means (open wiring) offers the advantages of ease of installation, simple maintenance, and reduced weight. When bundling open wiring, the bundles should

Wähle eine der folgenden:

be limited as to the number of cables to minimize damage from a single electrical fault.
include at least one shielded cable to provide good bonding of the bundle to the airframe.
be limited to a minimum bend radius of five times the bundle diameter to avoid excessive stresses on the cable insulation.
Support the bundle to structure and/ or solid fluid lines to prevent chafing damage.

Erklärung

Frage 71 von 150

1

En el regulador de voltaje del sistema eléctrico utilizado normalmente en los generadores encontramos las siguientes partes:

Wähle eine der folgenden:

P.M.G, circuito de detección, circuito amplificador, circuito de detección y detector de error
G.C.U, circuito de detección, circuito amplificador, circuito de detección y detector de error
Fuente de alimentación, G.C.U, circuito amplificador, circuito de detección y detector de error
Fuente de alimentación, circuito amplificador, circuito de detección y detector de error

Erklärung

Frage 72 von 150

1

Entre las componentes del inversor de tipo estático tenemos:

Wähle eine der folgenden:

Filtro de armónicos, etapa de control, cilindro de control, retardo de encendido, excitador de potencia y red de filtro
Sensor de corriente, etapa de control, cilindro de control, retardo de encendido, excitador de potencia y red de filtro
Generador de onda cuadrada, etapa de control, conformador de pulsos, retardo de encendido, excitador de potencia y red de filtro
Filtro de armónicos, sensor de potencia, conformador de pulsos, retardo de encendido, etapa de control y red de filtro

Erklärung

Frage 73 von 150

1

Generalmente de las Barras de DC se conectan:

Wähle eine der folgenden:

Sistemas básicos del avión
Sistemas esenciales y de emergencia
Sistemas poco importantes
Sistemas Obsoletos

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Frage 74 von 150

1

Grounding is electrically connecting a conductive object to the primary structure. One purpose of grounding is to

Wähle eine der folgenden:

prevent current return paths.
allow static charge accumulation.
prevent development of radio frequency potentials.
push-pull-type circuit breakers only (no switches).

Erklärung

Frage 75 von 150

1

How are generators rated?

Wähle eine der folgenden:

Watts at rated voltage.
Amperes at rated voltage.
The impedance at rated voltage.
Current.

Erklärung

Frage 76 von 150

1

How can the direction of rotation of a dc electric motor be changed?

Wähle eine der folgenden:

Interchange the wires which connect the motor to the external power source.
Reverse the electrical connections to either the field or armature windings.
Rotate the positive brush one commutator segment.
electrical or mechanical interconnections are provided so that the anticollision light will operate at all times that the position light switch is in the ON position.

Erklärung

Frage 77 von 150

1

How does the routing of coaxial cables differ from the routing of electrical wiring?

Wähle eine der folgenden:

Coaxial cables are routed parallel with stringers or ribs.
Coaxial cables are routed at right angles to stringers or ribs.
Coaxial cables are routed as directly as possible.
Coaxial wires

Erklärung

Frage 78 von 150

1

How is a shunt-wound dc generator connected?

Wähle eine der folgenden:

One field is shunted across the other.
Both fields are shunted across the armature.
The field and armature are shunted with a capacitor.
a synchronous electric motor.

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Frage 79 von 150

1

How should a voltmeter be connected?

Wähle eine der folgenden:

In series with the source.
In parallel with the load.
In series with the load.

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Frage 80 von 150

1

If a wire is installed so that it comes in contact with some moving parts, what protection should be given the wire?

Wähle eine der folgenden:

Wrap with soft wire solder into a shield.
Wrap with friction tape.
Pass through conduit.
wrapping with plastic.

Erklärung

Frage 81 von 150

1

If any one generator in a 24-volt dc system shows low voltage, the most likely cause is

Wähle eine der folgenden:

an out-of-adjustment voltage regulator.
shorted or grounded wiring.
a defective reverse current cutout relay.
a stepdown transformer and a rectifier.

Erklärung

Frage 82 von 150

1

If it is necessary to use an electrical connector where it may be exposed to moisture, the mechanic should

Wähle eine der folgenden:

coat the connector with grease.
use a special moisture- proof type.
spray the connector with varnish or zinc-chromate.
combined resistance and current-carrying capacity.

Erklärung

Frage 83 von 150

1

If one switch is used to control all navigation lights, the lights are most likely connected

Wähle eine der folgenden:

in series with each other and parallel to the switch.
in series with each other and in series with the switch.
parallel to each other and in series with the switch.
parallel with the switch

Erklärung

Frage 84 von 150

1

If several long lengths of electrical cable are to be installed in rigid conduit, the possibility of damage to the cable as it is pulled through the conduit will be reduced by

Wähle eine der folgenden:

dusting the cable with powdered graphite.
dusting the cable with powdered soapstone.
applying a light coat of dielectric grease.
prevent development of radio frequency potentials.

Erklärung

Frage 85 von 150

1

If the (+) terminal of a voltmeter is connected to the (-) terminal of the source voltage and the (-) terminal of the meter is connected to the (+) terminal of the source voltage, the voltmeter will read

Wähle eine der folgenden:

correctly.
low voltage.
backwards.
parallel.

Erklärung

Frage 86 von 150

1

If the IDG scavenge oil filter is contaminated with chunks or pieces of metal

Wähle eine der folgenden:

change the oil at 25 hour intervals.
"remove and replace the IDG."
"replace the oil and filter at 25 hour intervals."
oil spray.

Erklärung

Frage 87 von 150

1

If the positive field lead between a generator and a generator control panel breaks and is shorted while the engine is running, a voltmeter connected to generator output would indicate

Wähle eine der folgenden:

zero voltage.
residual voltage.
normal voltage.
Hight voltage

Erklärung

Frage 88 von 150

1

In aircraft electrical systems, automatic reset circuit breakers

Wähle eine der folgenden:

circuits each pole can complete through the switch.
are useful where only temporary overloads are normally encountered.
must be used in all circuits essential to safe operation of the aircraft.
should not be used as circuit protective devices.

Erklärung

Frage 89 von 150

1

In an ac circuit with no phase lead or lag, which is true?

Wähle eine der folgenden:

Real power is zero.
Real power is greater than apparent power.
Real power equals apparent power.
Both fields are shunted across the armature.

Erklärung

Frage 90 von 150

1

In installations where the ammeter is in the generator or alternator lead, and the regulator system does not limit the maximum current that the generator or alternator can deliver, the ammeter can be redlined at what percent of the generator or alternator rating?

Wähle eine der folgenden:

50
75
100
125

Erklärung

Frage 91 von 150

1

In the American Wire Gauge (AWG) system of numbers used to designate electrical wire sizes, the number assigned to a size is related to its

Wähle eine der folgenden:

combined resistance and current-carrying capacity.
current-carrying capacity.
cross-sectional area.
should not be used as circuit protective devices.

Erklärung

Frage 92 von 150

1

In troubleshooting an electrical circuit, if an ohmmeter is properly connected across a circuit component and some value of resistance is read,

Wähle eine der folgenden:

the component has continuity and is open.
either the component or the circuit is shorted.
the component has continuity and is not open.
circuit breaker activation.

Erklärung

Frage 93 von 150

1

Integrated drive generators (IDG) employ a type of high output ac generator that utilizes

Wähle eine der folgenden:

"brushes and slip rings to carry generated dc exciter current to the rotating field.
"battery current to excite the field.
a brushless system to produce current.
either the component or the circuit is shorted.

Erklärung

Frage 94 von 150

1

La batería cumple como función

Wähle eine der folgenden:

Suplir las necesidades básicas eléctricas del avión en caso de falla.
Mantener los motores encendidos
Mantener la Navegación del Avión
Poder encender los radios de VHF

Erklärung

Frage 95 von 150

1

La característica principal de un sistema eléctrico de corriente A.C. con generadores aislados es que:

Wähle eine der folgenden:

El sistema solo funciona con A.C.
El voltaje de alterna solamente es de 115/200v a 400 CPS
La corriente de directa se obtiene únicamente a partir de inversores
No permite que corriente proveniente de dos o más fuentes distintas se mezclen en una sola baRRA

Erklärung

Frage 96 von 150

1

"La corriente AC en el avion se convierte en DC por medio de:"

Wähle eine der folgenden:

Capacitores
"TRUs (Transformer Rectifier Units)"
Diodos
Densímetros

Erklärung

Frage 97 von 150

1

"La corriente DC del Avion se convierte a AC por medio de:"

Wähle eine der folgenden:

"TRUS (Transformer Rectifier Unit)"
Diodos
Inversores
Capacitores

Erklärung

Frage 98 von 150

1

La corriente de arranque de un motor ambobinado en serie, al pasar a través de ambos embobinados, el del campo y el de la armadura, produce una

Wähle eine der folgenden:

Torsión baja de arranque.
Velocidad un poco mayor cuando no tiene carga.
Torsión alta de arranque.
La frecuencia y el voltaje deben ser ambos iguales.

Erklärung

Frage 99 von 150

1

La misión principal del panel de control de barras es: El control del correcto funcionamiento de la C.S.D. lo observamos en la cabina en los siguientes indicadores:

Wähle eine der folgenden:

Controlar el exceso de carga
Controlar el bajo voltaje
Controlar el relé del generador
Detección de barra sin corriente

Erklärung

Frage 100 von 150

1

La unidad hidráulica de la C.S.D encontramos:

Wähle eine der folgenden:

Eje portador, unidad fija, unidad variable, cilindro de control, diferencial de engranajes y planetarios
Unidad hidráulica variable, unidad hidráulica fija, diferencial de engranajes y planetarios.
Unidad hidráulica variable, unidad hidráulica fija, eje portador de entrada y un cilindro de control
Unidad hidráulica variable, un sistema de gobierno de velocidad y un cilindro de control

Erklärung

Frage 101 von 150

1

Los aviones para atender sus demandas de energía eléctrica utilizan básicamente los siguientes tipos de corriente:

Wähle eine der folgenden:

Corriente alterna 115/200 voltios a 400 c.p.s., corriente alterna 28 voltios y corriente continua a 28 voltios
Corriente alterna 115/200 voltios a 400 c.p.s., corriente alterna 28 voltios y corriente continua trifásica a 28 voltios a 400 c.p.s.
Corriente alterna 115/200 voltios a 400 c.p.s., corriente alterna 28 voltios y corriente continua monofásica a 28 voltios
Corriente alterna 115/200 voltios a 400 c.p.s., corriente alterna 28 voltios y corriente continua bifásica a 28 voltios

Erklärung

Frage 102 von 150

1

Los generadores del avión, generalmente se encuentran ubicados en:

Wähle eine der folgenden:

Los motores
En el sistema Neumático
En el sistema hidráulico
En los alojamientos de los trenes de aterrizaje

Erklärung

Frage 103 von 150

1

Oil canning of the sides of aluminum or steel electrical junction boxes is considered to be

Wähle eine der folgenden:

normal operation in vibration prone areas.
a shorting hazard.
acceptable operation.
Structural.

Erklärung

Frage 104 von 150

1

One advantage of using ac electrical power in aircraft is

Wähle eine der folgenden:

that ac electrical motors can be reversed while dc motors cannot.
greater ease in stepping the voltage up or down.
"that the effective voltage is 1.41 times the maximum instantaneous voltage; therefore, less power input is required."
rectifiers which use the aircraft's ac generators as a source of power.

Erklärung

Frage 105 von 150

1

Para que el relé de salida del generador se cierre deben cumplirse dos condiciones:

Wähle eine der folgenden:

"Que se ponga el interruptor correspondiente de cabina en ON y que lo permita el panel de control"
"Que se ponga el interruptor correspondiente de cabina en RESET y que lo permita el panel de control"
Que lo permita el panel de control y que el APU este disponible
Que lo permita el panel de control y que la EXTERNAL POWER este disponible

Erklärung

Frage 106 von 150

1

Residual voltage is a result of magnetism in the

Wähle eine der folgenden:

field windings.
field shoes.
armature.
an integral fan.

Erklärung

Frage 107 von 150

1

Si un generador está equipado con un regulador de voltaje de tipo vibrador, el único momento en que los puntos del vibrador permenecen abiertos

Wähle eine der folgenden:

La potencia de salida del motor pueda ser controlada de mas cerca.
Está controlado por la separación (clearance) de los puntos del relay de corte de corriente inversa.
Es aumentada cuando la carga externa es mayor que la salida del generador.
Depende en la carga que lleva el generador.

Erklärung

Frage 108 von 150

1

Terminales de alambre eléctrico para la mayoría de las aplicaciones de aeronaves deben ser del tipo

Wähle eine der folgenden:

Ranurado.
Gancho.
Anillo.
Obturado

Erklärung

Frage 109 von 150

1

The circuit breaker in the instrument lighting system protects the

Wähle eine der folgenden:

lights from too much current.
wiring from too much current.
inverters which use the aircraft's ac generators as a source of power.
wiring from too much voltage.

Erklärung

Frage 110 von 150

1

The generator rating is usually found stamped on the

Wähle eine der folgenden:

firewall.
generator.
engine.
Energy

Erklärung

Frage 111 von 150

1

The inductor-type inverter output voltage is controlled by the

Wähle eine der folgenden:

number of poles and the speed of the motor.
voltage regulator.
dc stator field current.
resistance of the generator field circuit.

Erklärung

Frage 112 von 150

1

The major advantages of alternating current (AC) over direct current (DC) is the fact that its current and voltage can easily be increased or decreased

Wähle eine der folgenden:

by means of a inverter.
by means of a rectifier.
by means of a transformer.
be removed from the generator housing.

Erklärung

Frage 113 von 150

1

The most common method of attaching a pin or socket to an individual wire in an MS electrical connector is by

Wähle eine der folgenden:

crimping.
soldering.
crimping and soldering.
Rolling

Erklärung

Frage 114 von 150

1

The most common method of regulating the voltage output of a compound dc generator is to vary the

Wähle eine der folgenden:

current flowing through the shunt field coils.
total effective field strength by changing the reluctance of the magnetic circuit.
resistance of the series field circuit.
Rotate the positive brush one commutator segment.

Erklärung

Frage 115 von 150

1

The nominal rating of electrical switches refers to continuous

Wähle eine der folgenden:

current rating with the contacts open.
voltage rating with the contacts closed.
current rating with the contacts closed.
the system voltage and cable length.

Erklärung

Frage 116 von 150

1

The overvoltage control automatically protects the generator system when excessive voltage is present by

Wähle eine der folgenden:

opening the shunt field circuit.
opening and resetting the field control relay.
breaking a circuit to the trip coil of the field control relay.
increasing the output of the low generator to equal the output of the high generator.

Erklärung

Frage 117 von 150

1

The pin section of an AN/MS connector is normally installed on

Wähle eine der folgenden:

the power supply side of a circuit.
the ground side of a circuit.
"either side of a circuit (makes no difference)."
resistance in the rotor windings.

Erklärung

Frage 118 von 150

1

The poles of a generator are laminated to

Wähle eine der folgenden:

reduce flux losses.
increase flux concentration.
reduce eddy current losses.
an infinitely variable mechanical gearing system.

Erklärung

Frage 119 von 150

1

The primary considerations when selecting electric cable size are

Wähle eine der folgenden:

current-carrying capacity and allowable voltage drop.
the voltage and amperage of the load it must carry.
the system voltage and cable length.
input voltage must be maintained at a constant value.

Erklärung

Frage 120 von 150

1

The purpose of a rectifier in an electrical system is to change

Wähle eine der folgenden:

the frequency of alternating current.
direct current to alternating current.
alternating current to direct current.
Real power is zero.

Erklärung

Frage 121 von 150

1

The strength of the core of an electromagnet depends upon the material from which it is constructed and which of the following?

Wähle eine der folgenden:

The number of turns of wire in the coil and the applied voltage.
The number of turns of wire in the coil and the amount of current (amperes) passing through the coil.
The size (cross section) and the number of turns of wire in the coil and the applied voltage.
resistance in the generator output circuit.

Erklärung

Frage 122 von 150

1

The three kinds of circuit-protection devices used most commonly in aircraft circuits are

Wähle eine der folgenden:

circuit breakers, resistors, and current limiters.
circuit breakers, fuses, and current limiters.
circuit breakers, capacitors, and current limiter plug-ins mechanical reset types.
wrapping with electrical tape.

Erklärung

Frage 123 von 150

1

The voltage in an ac transformer secondary that contains twice as many loops as the primary will be

Wähle eine der folgenden:

greater and the amperage less than in the primary.
"greater and the amperage greater than in the primary."
less and the amperage greater than in the primary.
by means of a rectifier.

Erklärung

Frage 124 von 150

1

The voltage output of an alternator may be regulated by controlling the

Wähle eine der folgenden:

speed of the alternator.
voltage output of the dc exciter.
resistance in the rotor windings.
dusting the cable with powdered soapstone.

Erklärung

Frage 125 von 150

1

To help minimize radio interference a capacitor will largely eliminate and provide a steady direct current if the capacitor is connected to the generator in

Wähle eine der folgenden:

parallel.
series.
series/parallel.

Erklärung

Frage 126 von 150

1

Un propósito de la puerta de inducidos (growler test) es para determinar la presencia de

Wähle eine der folgenden:

Un conmutador con deformación circunferencial.
Un cable de campo roto.
Una armadura en corto.
Ranurado.

Erklärung

Frage 127 von 150

1

What is a method used for restoring generator field residual magnetism?

Wähle eine der folgenden:

Flash the fields.
Reseat the brushes.
Energize the armature.
show very low resistance if it is a series field coil.

Erklärung

Frage 128 von 150

1

What is an important factor in selecting aircraft fuses?

Wähle eine der folgenden:

The current exceeds a predetermined value.
The voltage rating should be lower than the maximum circuit voltage.
Capacity matches the needs of the circuit.
greater ease in stepping the voltage up or down.

Erklärung

Frage 129 von 150

1

What is normally used to bond noncontinuous stainless steel aircraft components?

Wähle eine der folgenden:

Stainless steel jumpers.
Copper jumpers.
Aluminum jumpers.
Iron steel copper

Erklärung

Frage 130 von 150

1

What is the advantage of a circuit breaker when compared to a fuse?

Wähle eine der folgenden:

Never needs replacing.
Always eliminates the need of a switch.
Resettable and reusable.
It breaks circuit quickly.

Erklärung

Frage 131 von 150

1

What is the advantage of a current limiter?

Wähle eine der folgenden:

It breaks circuit quickly.
It can be reset easily.
It will take overload for a short period.
Always eliminates the need of a switch.

Erklärung

Frage 132 von 150

1

What is the frequency of an alternator dependent upon?

Wähle eine der folgenden:

Voltage.
RPM.
Current.
Watts

Erklärung

Frage 133 von 150

1

What is the maximum amount of time a circuit can be in operation and still be an intermittent duty circuit?

Wähle eine der folgenden:

Three minutes.
Two minutes.
One minute.
Ten minutes

Erklärung

Frage 134 von 150

1

What is the purpose of the selection of derated switches for known continuous load current applications?

Wähle eine der folgenden:

To calculate the voltage drop across the circuit.
"To prevent short circuits in the motor field windings."
To obtain reasonable switch efficiency and service life.
The current exceeds a predetermined value.

Erklärung

Frage 135 von 150

1

What is the ratio of turns between the primary coil winding and the secondary coil winding of a transformer designed to triple its input voltage?

Wähle eine der folgenden:

Primary will have one- third as many turns as its secondary.
Primary will have twice as many turns as its secondary.
Primary will have three times as many turns as its secondary.
Both fields are shunted across the armature.

Erklärung

Frage 136 von 150

1

"What is the voltage drop for a No. 18 copper wire 50 feet long to carry 12.5 amperes, continuous operation? Use the formula VD = RLA VD = Voltage drop R = Resistance per ft = .00644 L = Length of wire A = Amperes"

Wähle eine der folgenden:

1/2V.
1V.
4V.
2V.

Erklärung

Frage 137 von 150

1

What kind of switch should you install in a single wire circuit that required the switch to be manually held in the ON position?

Wähle eine der folgenden:

Single-pole, single-throw (SPST), two-position normally open (NO).
"Single-pole, single-throw (SPST), single-position."
Single-pole, double-throw (SPDT), single-position normally open (NO).
"Dual-pole, single-throw (DPST), single-position."

Erklärung

Frage 138 von 150

1

What protection to wires and cables does conduit provide when used in aircraft installations?

Wähle eine der folgenden:

Electromagnetic.
Mechanical.
Structural.
Chemical

Erklärung

Frage 139 von 150

1

When adding a rheostat to a light circuit to control the light intensity, it should be connected in

Wähle eine der folgenden:

parallel with the light.
series with the light.
series parallel with the light switch.
parallel with the switch

Erklärung

Frage 140 von 150

1

When considering an alteration, the criteria upon which the selection of electric cable size should be based are

Wähle eine der folgenden:

applied voltage and allowable voltage drop.
current-carrying capacity and allowable voltage drop.
current-carrying capacity and applied voltage.
The current exceeds a predetermined value.

Erklärung

Frage 141 von 150

1

When dc generators are operated in parallel to supply power for a single load, their controls include an equalizer circuit to assure that all generators share the load equally. The equalizer circuit operates by

Wähle eine der folgenden:

increasing the output of the low generator to equal the output of the high generator.
"decreasing the output of the high generator to equal the output of the low generator."
increasing the output of the low generator and decreasing the output of the high generator until they are equal.
total effective field strength by changing the reluctance of the magnetic circuit.

Erklärung

Frage 142 von 150

1

"When necessary during operation, CSD disconnect is usually accomplished by"

Wähle eine der folgenden:

a switch in the cockpit.
circuit breaker activation.
a shear section in the input shaft.
the component has continuity and is not open.

Erklärung

Frage 143 von 150

1

When using an ohmmeter to check the continuity of a generator field coil, the coil should

Wähle eine der folgenden:

be removed from the generator housing.
show high resistance when the meter prods are connected to the terminals of the coil.
show very low resistance if it is a series field coil.
opening the shunt field circuit.

Erklärung

Frage 144 von 150

1

When using the voltage drop method of checking circuit resistance, the

Wähle eine der folgenden:

input voltage must be maintained at a constant value.
output voltage must be maintained at a constant value.
input voltage must be varied.
the voltage and amperage of the load it must carry.

Erklärung

Frage 145 von 150

1

Where electric cables must pass through holes in bulkheads, formers, ribs, firewalls, etc., the wires should be protected from chafing by

Wähle eine der folgenden:

wrapping with electrical tape.
using a suitable grommet.
wrapping with plastic.
wiring from too much voltage.

Erklärung

Frage 146 von 150

1

Which of the following copper electrical cable sizes should be selected to replace a No. 6 aluminum electrical cable?

Wähle eine der folgenden:

No. 4.
No. 6.
No. 8.
No. 10.

Erklärung

Frage 147 von 150

1

Which of the following must be accomplished when installing an anticollision light?

Wähle eine der folgenden:

Install a switch independent of the position light switch.
Use shielded electrical cable to assure fail-safe operation.
Connect the anticollision light to the aircraft position light switch.
The number of turns of wire in the coil and the applied voltage.

Erklärung

Frage 148 von 150

1

Which of the following should be accomplished in the installation of aircraft wiring?

Wähle eine der folgenden:

Support the bundle to structure and/ or solid fluid lines to prevent chafing damage.
Provide adequate slack in the wire bundle to compensate for large changes in temperature.
Locate the bundle above flammable fluid lines and securely clamp to structure.
only plain nuts and lockwashers have been used for terminal attachment to the studs.

Erklärung

Frage 149 von 150

1

Which statement relating to electric wiring is true?

Wähle eine der folgenden:

When attaching a terminal to the end of an electric cable, it should be determined that the strength of the cable-to- terminal joint is at least twice the tensile strength of the cable.
electrical unit in the circuit and should be located as close to the source as possible.
"All electric cable splices should be covered with soft insulating tubing (spaghetti) for mechanical
protection against external abrasion."
When attaching a terminal to the end of an electric cable, it should be determined that the strength of the cable-to- terminal joint is at least equal to the tensile strength of the cable itself.

	Erstellt von DIEGO FERNANDO HERNANDEZ CORTAZAR vor mehr als 7 Jahre

SIMULADOR EXAMEN DE LICENCIA TLA PARA COLOMBIA SISTEMAS ELECTRICOS

SIMULADOR 5 EXAMEN LICENCIA TLA SOLO SISTEMAS ELECTRICOS (INGLES)

Frage 1 von 150

A series-wound dc electric motor will normally require

Wähle eine der folgenden:

Erklärung

Frage 2 von 150

A voltage regulator controls generator output by

Wähle eine der folgenden:

Erklärung

Frage 3 von 150

Aluminum wire must be stripped very carefully because

Wähle eine der folgenden:

Erklärung

Frage 4 von 150

An ammeter in a battery charging system is for the purpose of indicating the

Wähle eine der folgenden:

Erklärung

Frage 5 von 150

For general electrical use in aircraft, the acceptable method of attaching a terminal to a wire is by

Wähle eine der folgenden:

Erklärung

Frage 6 von 150

How can it be determined if a transformer winding has some of its turns shorted together?

Wähle eine der folgenden:

Erklärung

Frage 7 von 150

How does the magnetic brake used to stop rotation of an electric motor armature operate?

Wähle eine der folgenden:

Erklärung

Frage 8 von 150

"How many cycles of ac voltage are produced in a six-pole alternator of the revolving-field type for each revolution of the rotor?"

Wähle eine der folgenden:

Erklärung

Frage 9 von 150

If a generator is equipped with a vibrator-type voltage regulator, the actual time the voltage regulator points remain open

Wähle eine der folgenden:

Erklärung

Frage 10 von 150

"If the reverse current cutout relay contact points fail to open after the generator output has dropped below battery potential, current will flow through the generator armature"

Wähle eine der folgenden:

Erklärung

Frage 11 von 150

One purpose of a growler test is to determine the presence of

Wähle eine der folgenden:

Erklärung

Frage 12 von 150

The commutator of a generator

Wähle eine der folgenden:

Erklärung

Frage 13 von 150

The method most often used in overcoming the effect of armature reaction is through the use of

Wähle eine der folgenden:

Erklärung

Frage 14 von 150

The only practical method of maintaining a constant voltage output from an aircraft generator under varying conditions of speed and load is to vary the

Wähle eine der folgenden:

Erklärung

Frage 15 von 150

The pole pieces or shoes used in a dc generator are a part of the

Wähle eine der folgenden:

Erklärung

Frage 16 von 150

The starting current of a series-wound dc motor, in passing through both the field and armature windings, produces a

Wähle eine der folgenden:

Erklärung

Frage 17 von 150

The type of electric wire terminals used for most aircraft applications, in addition to providing good current carrying capabilities, are designed primarily

Wähle eine der folgenden:

Erklärung

Frage 18 von 150

To test generator or motor armature windings for opens,

Wähle eine der folgenden:

Erklärung

Frage 19 von 150

To what depth is the mica insulation between the commutator bars of a dc generator undercut?

Wähle eine der folgenden:

Erklärung

Frage 20 von 150

What is a cause of generator brush arcing?

"How many cycles of ac voltage are produced in a six-pole alternator of the revolving-field type
for each revolution of the rotor?"