AE06 revision questions

What sort of diode allows current both ways above a certain voltage?

• Silicon
• Rectifier
• Zener
• None - trick question

A high resistance earth in a lighting circuit will:

• Make the lamps go dim
• Blow the fuse
• Blow the bulb
• Make the lamp brighter

Which car system will have a sun load sensor?

• Planetary gearbox
• Climate control system
• Electric windows
• Anti theft device

An electric window motor has 12v at both terminals. This is:

• A fault
• Normal, as it protects the fuse
• Normal, as one will be switched to earth
• The motor incorrectly connected

LEDs are better than filament lamps because:

• LEDs use more current
• LEDs cause a short circuit when they blow
• LEDs are quick to operate and more reliable
• They produce a bright blue light

How many volts will be across a window heater element?

• Within 0.5 volts of battery voltage
• Depends on engine speed
• Always more than 12v
• Never more than 10 volts

An inductive wheel speed sensor:

• Increases voltage with speed
• Increases frequency with speed
• Both of the above
• None of the above

The best way to check a glow plug is with a:

• Ohm-meter
• DTI
• Feeler gauge
• Plug-in diagnostic machine

Flemming's left hand rule is used with:

• Motors
• Alternators
• Amps volts and ohms
• Wet wipes

How do hybrid vehicles achieve regenerative braking?

• Use the motor as a generator
• Use the brakes as a motor
• Use the battery as a resistor
• Use the force, Luke