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7. Vehicle Components

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137
The Electrical System

Your battery is the vehicle's primary source of electrical power when the car is off.

When you turn your ignition switch to start your car electricity is used to close another switch called a solenoid that transmits the large amount of current needed to turn the starter motor.

Once your engine is running, power is generated by the alternator which also keeps your battery charged.

Your voltage regulator controls the amount of electricity that is generated.

Your distributor and coil generate and deliver the very high voltage electricity needed by the individual spark plugs of your engine

Electricity is distributed throughout your vehicle by various electrical circuits for lighting, to operate electrical motors, to operate computers that control various functions, to operate your radio, interior cooling, heating, and ventilating system.

The purpose of fuses is to disable a circuit that is drawing too much current so as to prevent a fire and protect the components that the circuit serves.


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Lesson Summary


  

Lesson 7 Quiz


You will now answer 5 questions to test what you learned during this lesson. You must answer all questions correctly to receive completion credit for this lesson. You may answer the questions as many times as necessary to get them right.

You should review the lesson material if you don't do well on the quiz.

  1. The ALTERNATOR:


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  2. The minimum tread thickness for passenger car tires is:


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  3. The engine in your car is sometimes called:


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  4. This oil warning light means that:


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  5. Disc brakes work by:


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