SIMULADOR 5 EXAMEN LICENCIA TLA SOLO SISTEMAS ELECTRICOS (INGLES)

Questão 1 de 150

1

A series-wound dc electric motor will normally require

Selecione uma das seguintes:

"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.

Explicação

Questão 2 de 150

1

A voltage regulator controls generator output by

Selecione uma das seguintes:

"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.

Explicação

Questão 3 de 150

1

Aluminum wire must be stripped very carefully because

Selecione uma das seguintes:

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.

Explicação

Questão 4 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 5 de 150

1

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

Selecione uma das seguintes:

crimping.
soldering.
crimping and soldering.
Rolling

Explicação

Questão 6 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 7 de 150

1

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

Selecione uma das seguintes:

"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.

Explicação

Questão 8 de 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?"

Selecione uma das seguintes:

Four.
Three.
Six.
Two

Explicação

Questão 9 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 10 de 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"

Selecione uma das seguintes:

"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.

Explicação

Questão 11 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 12 de 150

1

The commutator of a generator

Selecione uma das seguintes:

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.

Explicação

Questão 13 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 14 de 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

Selecione uma das seguintes:

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

Explicação

Questão 15 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 16 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 17 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 18 de 150

1

To test generator or motor armature windings for opens,

Selecione uma das seguintes:

"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.

Explicação

Questão 19 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 20 de 150

1

What is a cause of generator brush arcing?

Selecione uma das seguintes:

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

Explicação

Questão 21 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 22 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 23 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 24 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 25 de 150

1

When ac generators are operated in parallel, the

Selecione uma das seguintes:

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

Explicação

Questão 26 de 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

Selecione uma das seguintes:

Four
two.
three.
one.

Explicação

Questão 27 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 28 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 29 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 30 de 150

1

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

Selecione uma das seguintes:

Slotted.
Hook.
Ring.
Tappered

Explicação

Questão 31 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 32 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 33 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 34 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 35 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 36 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 37 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 38 de 150

1

¿Que actividades realiza el relé de protección diferencial?

Selecione uma das seguintes:

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

Explicação

Questão 39 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 40 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 41 de 150

1

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

Selecione uma das seguintes:

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."

Explicação

Questão 42 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 43 de 150

1

A CSD unit drives a generator through the use of

Selecione uma das seguintes:

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

Explicação

Questão 44 de 150

1

A relay is

Selecione uma das seguintes:

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.

Explicação

Questão 45 de 150

1

A voltage regulator controls generator voltage by changing the

Selecione uma das seguintes:

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."

Explicação

Questão 46 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 47 de 150

1

Aircraft fuse capacity is rated in

Selecione uma das seguintes:

volts.
ohms.
amperes.
Watts

Explicação

Questão 48 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 49 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 50 de 150

1

Bonding connections should be tested for

Selecione uma das seguintes:

resistance value.
amperage value.
reactance.
Alternator

Explicação

Questão 51 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 52 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 53 de 150

1

CSD driven generators are usually cooled by

Selecione uma das seguintes:

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

Explicação

Questão 54 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 55 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 56 de 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:

Selecione uma das seguintes:

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

Explicação

Questão 57 de 150

1

Cuando generadores de corriente alterna son operados en paralelo,

Selecione uma das seguintes:

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.

Explicação

Questão 58 de 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:

Selecione uma das seguintes:

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

Explicação

Questão 59 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 60 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 61 de 150

1

El APU posee como backup para encendido:

Selecione uma das seguintes:

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

Explicação

Questão 62 de 150

1

El APU proporciona al avión:

Selecione uma das seguintes:

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

Explicação

Questão 63 de 150

1

El avión se puede alimentar eléctricamente externamente por medio de:

Selecione uma das seguintes:

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

Explicação

Questão 64 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 65 de 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:

Selecione uma das seguintes:

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

Explicação

Questão 66 de 150

1

El generador del Avion genera con una frecuencia de:

Selecione uma das seguintes:

60hz
50hz
120hz
400hz

Explicação

Questão 67 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 68 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 69 de 150

1

Electric circuits are protected from overheating by means of

Selecione uma das seguintes:

thermocouples.
shunts.
fuses.
cadmium-plated steel.

Explicação

Questão 70 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 71 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 72 de 150

1

Entre las componentes del inversor de tipo estático tenemos:

Selecione uma das seguintes:

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

Explicação

Questão 73 de 150

1

Generalmente de las Barras de DC se conectan:

Selecione uma das seguintes:

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

Explicação

Questão 74 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 75 de 150

1

How are generators rated?

Selecione uma das seguintes:

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

Explicação

Questão 76 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 77 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 78 de 150

1

How is a shunt-wound dc generator connected?

Selecione uma das seguintes:

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.

Explicação

Questão 79 de 150

1

How should a voltmeter be connected?

Selecione uma das seguintes:

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

Explicação

Questão 80 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 81 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 82 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 83 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 84 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 85 de 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

Selecione uma das seguintes:

correctly.
low voltage.
backwards.
parallel.

Explicação

Questão 86 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 87 de 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

Selecione uma das seguintes:

zero voltage.
residual voltage.
normal voltage.
Hight voltage

Explicação

Questão 88 de 150

1

In aircraft electrical systems, automatic reset circuit breakers

Selecione uma das seguintes:

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.

Explicação

Questão 89 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 90 de 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?

Selecione uma das seguintes:

50
75
100
125

Explicação

Questão 91 de 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

Selecione uma das seguintes:

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

Explicação

Questão 92 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 93 de 150

1

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

Selecione uma das seguintes:

"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.

Explicação

Questão 94 de 150

1

La batería cumple como función

Selecione uma das seguintes:

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

Explicação

Questão 95 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 96 de 150

1

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

Selecione uma das seguintes:

Capacitores
"TRUs (Transformer Rectifier Units)"
Diodos
Densímetros

Explicação

Questão 97 de 150

1

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

Selecione uma das seguintes:

"TRUS (Transformer Rectifier Unit)"
Diodos
Inversores
Capacitores

Explicação

Questão 98 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 99 de 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:

Selecione uma das seguintes:

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

Explicação

Questão 100 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 101 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 102 de 150

1

Los generadores del avión, generalmente se encuentran ubicados en:

Selecione uma das seguintes:

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

Explicação

Questão 103 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 104 de 150

1

One advantage of using ac electrical power in aircraft is

Selecione uma das seguintes:

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.

Explicação

Questão 105 de 150

1

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

Selecione uma das seguintes:

"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

Explicação

Questão 106 de 150

1

Residual voltage is a result of magnetism in the

Selecione uma das seguintes:

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

Explicação

Questão 107 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 108 de 150

1

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

Selecione uma das seguintes:

Ranurado.
Gancho.
Anillo.
Obturado

Explicação

Questão 109 de 150

1

The circuit breaker in the instrument lighting system protects the

Selecione uma das seguintes:

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.

Explicação

Questão 110 de 150

1

The generator rating is usually found stamped on the

Selecione uma das seguintes:

firewall.
generator.
engine.
Energy

Explicação

Questão 111 de 150

1

The inductor-type inverter output voltage is controlled by the

Selecione uma das seguintes:

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

Explicação

Questão 112 de 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

Selecione uma das seguintes:

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

Explicação

Questão 113 de 150

1

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

Selecione uma das seguintes:

crimping.
soldering.
crimping and soldering.
Rolling

Explicação

Questão 114 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 115 de 150

1

The nominal rating of electrical switches refers to continuous

Selecione uma das seguintes:

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

Explicação

Questão 116 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 117 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 118 de 150

1

The poles of a generator are laminated to

Selecione uma das seguintes:

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

Explicação

Questão 119 de 150

1

The primary considerations when selecting electric cable size are

Selecione uma das seguintes:

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.

Explicação

Questão 120 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 121 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 122 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 123 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 124 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 125 de 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

Selecione uma das seguintes:

parallel.
series.
series/parallel.

Explicação

Questão 126 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 127 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 128 de 150

1

What is an important factor in selecting aircraft fuses?

Selecione uma das seguintes:

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.

Explicação

Questão 129 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 130 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 131 de 150

1

What is the advantage of a current limiter?

Selecione uma das seguintes:

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

Explicação

Questão 132 de 150

1

What is the frequency of an alternator dependent upon?

Selecione uma das seguintes:

Voltage.
RPM.
Current.
Watts

Explicação

Questão 133 de 150

1

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

Selecione uma das seguintes:

Three minutes.
Two minutes.
One minute.
Ten minutes

Explicação

Questão 134 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 135 de 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?

Selecione uma das seguintes:

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.

Explicação

Questão 136 de 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"

Selecione uma das seguintes:

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

Explicação

Questão 137 de 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?

Selecione uma das seguintes:

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."

Explicação

Questão 138 de 150

1

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

Selecione uma das seguintes:

Electromagnetic.
Mechanical.
Structural.
Chemical

Explicação

Questão 139 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 140 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 141 de 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

Selecione uma das seguintes:

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.

Explicação

Questão 142 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 143 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 144 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 145 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 146 de 150

1

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

Selecione uma das seguintes:

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

Explicação

Questão 147 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 148 de 150

1

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

Selecione uma das seguintes:

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.

Explicação

Questão 149 de 150

1

Which statement relating to electric wiring is true?

Selecione uma das seguintes:

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.

	Criado por DIEGO FERNANDO HERNANDEZ CORTAZAR mais de 7 anos atrás

SIMULADOR EXAMEN DE LICENCIA TLA PARA COLOMBIA SISTEMAS ELECTRICOS

SIMULADOR 5 EXAMEN LICENCIA TLA SOLO SISTEMAS ELECTRICOS (INGLES)

Questão 1 de 150

A series-wound dc electric motor will normally require

Selecione uma das seguintes:

Explicação

Questão 2 de 150

A voltage regulator controls generator output by

Selecione uma das seguintes:

Explicação

Questão 3 de 150

Aluminum wire must be stripped very carefully because

Selecione uma das seguintes:

Explicação

Questão 4 de 150

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

Selecione uma das seguintes:

Explicação

Questão 5 de 150

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

Selecione uma das seguintes:

Explicação

Questão 6 de 150

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

Selecione uma das seguintes:

Explicação

Questão 7 de 150

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

Selecione uma das seguintes:

Explicação

Questão 8 de 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?"

Selecione uma das seguintes:

Explicação

Questão 9 de 150

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

Selecione uma das seguintes:

Explicação

Questão 10 de 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"

Selecione uma das seguintes:

Explicação

Questão 11 de 150

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

Selecione uma das seguintes:

Explicação

Questão 12 de 150

The commutator of a generator

Selecione uma das seguintes:

Explicação

Questão 13 de 150

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

Selecione uma das seguintes:

Explicação

Questão 14 de 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

Selecione uma das seguintes:

Explicação

Questão 15 de 150

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

Selecione uma das seguintes:

Explicação

Questão 16 de 150

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

Selecione uma das seguintes:

Explicação

Questão 17 de 150

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

Selecione uma das seguintes:

Explicação

Questão 18 de 150

To test generator or motor armature windings for opens,

Selecione uma das seguintes:

Explicação

Questão 19 de 150

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

Selecione uma das seguintes:

Explicação

Questão 20 de 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?"