WorksheetsIMI Level 3 AE06 Electrical Principles - Light Vehicle Maintenance - 2 of 3
Total questions: 35
Worksheet time: 12mins
Name
Class
Date
1.
ohm meter test on a thermistor shows 0 degrees C = 4,500 ohms ,20 degrees C= 1,200 ohms ,100 degreesC=200 ohms
a)
a/ Negative Temperature Coefficient
b)
b/ An inductive pick up is being used
c)
c/ A piezo crystal pressure sensor is being used
d)
d/ Positive Temperature Coefficient
2.
Whilst testing the voltage on an inductive speed sensor what would happen if the rotating component slowed.
a)
a/ there would be a decrease in AC Voltage
b)
b/ there would be an increase in AC Voltage
c)
c/ there would be a decrease in DC Voltage
d)
d/ there would be an increase in DC Voltage.
3.
What will be the effect on a lamp with a poor earth connection.
a)
the lamp will glow brighter than normal
b)
the lamp will be dimmer than normal
c)
the bulb would blow
d)
the fuse would blow
4.
What should the resistance of a door contact switch be when the door is closed.
a)
0 ohms
b)
10 K/Ohms
c)
Infinity
d)
100 Ohms
5.
Which of the following statements is correct
a)
Flemming`s left hand rule is used with Ohms Law
b)
Flemming`s left hand rule is used with motors
c)
Flemming`s right hand rule is used with motors
d)
Flemmimg`s left hand rule is used with generators
6.
A diesel glow plug is suspected to be faulty the test to carry out would be to test for
a)
Volts with an Ohm Meter
b)
Amps with an Ohm Meter
c)
/ A switching check with an oscilloscope
d)
Resistance test with an ohm meter.
7.
An AC inductive pick up will produce which type of wave form.
a)
A PMW
b)
A PWM
c)
A square wave pattern for voltage and time.
d)
A sine wave
8.
A Strain gauge pressure sensor incorporates the use of
a)
sensing resistors
b)
Thermister
c)
magnetic induction
d)
piezo crystals
9.
Name the electrical principle used to stop the wiper motor against momentum once the wipers have been switched off.
a)
Electromagnetic induction
b)
Reactive braking
c)
Re-generative braking
d)
EMF
10.
Which one of the following terms applies to a reflector in a vehicle headlight.
a)
Sine wave reaction
b)
lamp colour
c)
Parabolic
d)
PWM
11.
The correct procedure to test for a parasitic drain is
a)
Ignition off,battery leads disconnected, test current using ammeter
b)
Ignition on, both battery leads connected and check for ohms in series
c)
Ignition off, disconnect battery earth and check for amps in series
d)
Ignition off, disconnect Battery Positive and check for Volts in series
12.
On a heater system it is found that the motor will only run when the switch is set to full speed this would be caused by
a)
The vehicle`s thermostat is faulty.
b)
There is no power supply to the switch
c)
The resistor pack has failed
d)
The heater fuse has blown
13.
Hybrid electric vehicle re-generative braking is when the
a)
the motor acts as a generator
b)
when the generator acts as a motor
c)
when the brake is applied the differential goes into the locked position
d)
when the final drive turns in the opposite direction
14.
what is convection relating to air conditioning.
a)
the transfer of heat through a solid
b)
the transfer of heat through air or a gas
c)
the transfer of heat through waves or particles
d)
the transfer of a liquid through a compressor
15.
What readings would you expect when checking the feed to the terminals of a front heated windscreen
a)
Within 1.75 V of battery voltage
b)
Within 2.5 V of battery voltage
c)
Within 4.6 V of battery voltage
d)
Within 0.5 V of battery voltage
16.
How many motors are used in electric mirror adjustment
a)
1
b)
2
c)
0
d)
3
17.
How is the compressor clutch engaged in an air conditioning unit
a)
permanent magnet
b)
Mechanically using gears
c)
using a solenoid
d)
electromagnetically
18.
Stop & tail bulbs have offset pins, this is to prevent the bulb filaments being connected to the wrong circuits
a)
True
b)
False
19.
When checking for a fault in an electric mirror what should be checked first.
a)
Fuse
b)
Switch
c)
motors
d)
wiring.
20.
What does PWM stand for
a)
Pre Warming Motor
b)
Pulse Wattage Monitoring
c)
Pulse Width Modulation
d)
Pumped water mixing
21.
Its good practice when replacing electrical components to have the power supply isolated. This prevents component damage
a)
True
b)
False
22.
An advantage of using a multiplex systems compared to conventional wiring system is weight saving and less connections
a)
True
b)
False
23.
A door locking system which locks after a short period of time once the ignition key is removed is known as.
a)
rapid locking
b)
safety lock
c)
automatic lock
d)
lazy lock
24.
When jump starting a vehicle that has an ECU the negative lead must be fitted to the battery last.
a)
True
b)
False
25.
An electric windowcircuit while at rest is found to have 12 volts in both motor wires this is
a)
correct as both wires change to negative when the switch is operated
b)
incorrect as they should be both 0 volts
c)
incorrect as this would cause the motor to turn
d)
correct as one of the voltages will change when the switch is operated
26.
In relation to SRS what happens in 10 to 15 milliseconds after impact
a)
Airbag inflated and pre-tension is complete
b)
Airbag starts inflating & pre-tensioner moving
c)
Impact identified and pre-tension ignition
d)
Airbag and tensioner release
27.
Which of the following suppression techniques is commonly used with HT circuits
a)
inductive
b)
resistors
c)
capacitors
d)
bonding
28.
A gas discharge bulb contains
a)
Electrodes, Argon, Silver & Metallic Salts
b)
Wire elements & Helium gas
c)
Tungsten electrodes, silver & Metallic Salts
d)
Electrodes, Xenon, Mercury & Metallic Salts
29.
What does a central locking door contain
a)
drive motor and a gear
b)
Motor and a solenoid
c)
Solenoid and a gear
d)
solenoid and a rocker swivel
30.
Pin number 87 on a relay is connected to
a)
the component
b)
the switch
c)
the earth -
d)
the battery +
31.
What would the effect of a blown charge warning lamp bulb have on the alternator when the engine is re start
a)
the engine would not start as the alternator isolator will be activated
b)
the alternator will overcharge the battery
c)
the alternator will not charge the battery
d)
the alternator would charge the battery as normal
32.
What electronic device would be used to only allow current to flow in one direction
a)
a cathode
b)
a diode
c)
an anode
d)
a thermal sensor
33.
What auxiliary system uses a sun load sensor
a)
a brake cooling system
b)
an ECAS system
c)
Air conditioning system
d)
A gas discharge headlamp
34.
What is the function of a low pressure switch in an air conditioning unit
a)
to shut down the system if the refrigerant flows too fast
b)
to shut down the system if the refrigerant pressure drops
c)
to re-start the system if the compressor stalls
d)
to lower the pressure should the compressor apply too much pressure .
35.
The advantages of using LED lighting is
a)
lights illuminate in sequence and are not as bright a 5 watt bulb
b)
do not need an earth as they are wired in series
c)
they illuminate quickly and have a long life due to reduced current flow
d)
They are wired individually and therefore do not need a fused circuit.
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