Automotive Electrical Systems Quiz

How many motors are used in a single electric mirror adjusting system?

• 1

• 2

• 3

• 0

An ohmmeter test on a thermistor indicated: 0c = 4500 ohms, 20c = 1200 ohms, 100c = 200 ohms. This type of thermistor will be:

• Positive temperature coefficient

• Negative temperature coefficient

• Piezo crystal pressure sensor

• An inductive pick up sensor

Which of the following statements is correct?

• Flemings left hand rule is used with ohms law

• Flemings left hand rule is used with generators

• Flemings left hand rule is used with motors

• Flemings right hand rule is used with motors

What are the symptoms likely to be if the alternator warning lamp is faulty?

• An overcharge situation will occur

• A battery no charge situation

• The alternator charges only at idle

• The alternator charges only at high revs

It is good practice when replacing electronic components to have the power supply isolated. This can protect the component from being damaged when connecting it in to the system.

• True

• False

A gas discharge bulb contains:

• Electrodes, xenon, mercury and metal salts

• Wire elements, helium gas and metal salts

• Electrodes, argon, silver and metal salts

• A tungsten electrode, silver and metal salts

On a typical vehicle heater system, a customer complains of lack of low speeds of the motor. What would be the most likely fault?

• Resistor pack failure

• Coolant sensor faulty

• Switch faulty unit

• Motor brush failure

The term PWM stands for.

• Pulse wide modules

• Primary wired modules

• Pulse width modulation

• Pulse weighted meters

To prevent the battery from being overcharged, the alternator will be fitted with an integral:

• Slip ring

• Brush set

• Rectifier pack

• Zenor diode

Which of the following suppression techniques is commonly used in the ignition HT circuit?

• Inductors

• Capacitors

• Bonding

• Resisters