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AE06 - Advanced Electrics Flashcards | StudBud
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AE06 - Advanced Electrics
AE06 - Advanced Electrics
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1
In relation to cooling and air conditioning what is meant by the term convection?
Flow of heat though a material
Transfer of head which involves a fluid
The transfer of heat using waves or particles
The difference in air pressure
2
In an SRS system what occurs from 10 to15 milliseconds after impact
The air bag is inflated then the pre tensioners tighten up.
The pre tensioners start to tighten then airbag inflates
The airbag deflates and the pre tensioners loosen
The airbag inflates and the pre tensioners loosen
3
What does a central door locking actuator contain
Motor and solenoid
Solenoid and rocker switch
Drive motor and gear
Solenoid and gear
4
What is the reflective part of an headlight called.
A condenser
A lense
A prism
A parabolic
5
A strain gauge pressure sensor incorporates the use of
Piezo crystals
Sensing resistors
Magnetic inductors
A thermister
6
What's the electrical principle used to stop wiper systems against momentum once switched off
Electromotive force
Electromagnetic induction
Regenerative braking
Reactive braking
7
An electric window circuit when at rest is found to have 12v in both motor wires this is
Incorrect there shouldn't be voltage when the motor's still
Normal as it protects the fuse
Incorrect as this would cause the motor armature to turn
Correct as one of the wires will switch to earth
8
What will be the symptoms if the alternator charge warning light has blown
The alternator will only charge at high revs
The alternator will overcharge
The alternator will only charge at idle
The alternator will not charge
9
When checking an electric window or mirror, what should be checked first
Motor
Wring
Switch
Fuse
10
Flemmings left hand rule is related to what
Ohms law
Generators
Motors
Capacitors
11
What is this
An Integrated Circuit
A solenoid switch
Transistor
A fuse
12
On a hybrid electrical vehicle regenerative braking is when the
The brake fluid recuperates
Generator acts as a motor
Motor acts as a generator
Parking brake is slowly applied
13
The pattern shown on a oscilloscope of an inductive type sensor would be a
Sine wave
Square wave
Saw tooth
Cosine wave
14
How many motors are there on an electric mirror
4
1
5
2
15
what system on a vehicle uses a sun load sensor
Climate control
Central door locking
An electric window
A car alarm
16
The function of the low pressure switch in a air conditioning system is to?
Reduce evaporator temperature when required
Disconnect the compressor due to low gas/liquid level
Increase air flow through the condenser
Regulate refrigerant flow when the system is switched on
17
What happens to an inductive wheel speed sensor when the wheel rotates faster?
Voltage increases and the frequency increases
Voltage remains the same and the frequency remains the same
Voltage increases and the frequency remains the same
Voltage remains the same and the frequency increases
18
How is the compressor engaged on an air conditioning system
Mechanicaly
using a solenoid
Electromagnetically
Using magnets
19
How many satellites need to be in view for a sat nav to work
2
6
1
3
20
What reading would be expected when checking the feed to the terminals on a front heated screen
Within 0.5v of the battery voltage
Within 4.6v of the battery voltage
Within 2.5v of the battery voltage
Within 1.75 of the battery voltage
21
An item that allows current to flow in one direction until a specific threshold, is known as a
Zener diode
Rectifier
Transistor
Capacitor
22
Which of the following suppression techniques is commonly used in the ignition HT circuit?
Capacitors
Resistors
Bonding
Inductors
23
An advantage of multiplex/Can systems compared to conventional wiring is that it saves weight
True
False
24
A diesel glow plug is suspected to be faulty the test to be carried out would be
A voltage check with an ohmmeter
A resistance test with an ohmmeter
An amperage check with an ohmmeter
A switching check with an oscilloscope
25
It is good practice to isolate the power supply to prevent damaged to electrical components
False
True
26
To check for a parasitic drain connect a voltmeter parallel to the battery an turn consumers on
True
False
27
A HID gas discharge bulb contains what
Electrodes, Xenon, mercury and metal salts
A tungsten electrode,silver and metal salts
Electrodes,argon,silver and metal salts
Wire elements,helium gas and metal salts
28
An ohms test on a Thermister indicates 0C=4500 ohms 100C 200 ohms this type of thermister is
Piezo crystal pressure sensor
An inductive pick up sensor
Positive temperature coefficient
Negative Temperature coefficient
29
When testing an inductive speed sensor what would you expect to happen as it slowed
An increasing A.C Voltage
An decreasing D.C Voltage
An decreasing A.C Voltage
An increasing D.C Voltage
30
What effect will the effect of a lamp with a poor earth connection
Lamp will be dim
The lamp will be brighter
The bulb will blow
The circuit fuse will blow
31
What type of trace would you expect on an oscilloscope when testing a hall-effect sensor
Square wave
Saw tooth
Sine wave
Cosine Wave
32
What does PWM stand for
Pulse width modulation
Pulse wired motors
Primary wired modules
Pulse weighted motors
33
What are the main advantages of using a LED lighting system?
They produce a bright blue light from 1 LED
Slow reaction time increasing life expectancy
They are cheaper to produce
Quick reaction and greater reliability
34
Which of the following statements is correct
The unit of power is the hertz
1 Hertz = 360 degrees rotation
1 Hertz = 1 cycle per second
Hertz is the unit of magnetic flux
35
What should the resistance reading be on a door contact switch when the door is closed
0 ohms
Infinity
10k
100 ohms
36
What would the symptom be if the system earth failed on an electric window circuit
Window would only go down
Window would not operate
The window motor would be loud
Window would only go down
