Ignition System Components and Functions

The video explains how conventional automobiles use gasoline in an internal combustion engine to create motion. It details the role of the ignition coil as a transformer that increases voltage through electromagnetic induction. The video also covers the operation of the circuit, including the role of the knife switch and the magnetic field. Finally, it discusses the capacitor's function in absorbing back EMF to prevent damage to the circuit.

What is the primary role of a spark in an internal combustion engine?

• To increase fuel efficiency

• To ignite the fuel mixture

• To cool down the engine

• To lubricate engine parts

What is the main function of a 12-volt battery in a car's ignition system?

• To control the car's speed

• To generate high voltage for ignition

• To charge the car's battery

• To power the headlights

What type of device is an ignition coil?

• A capacitor

• A resistor

• A diode

• A transformer

How does an ignition coil increase voltage?

• By reducing resistance

• By stepping up voltage through electromagnetic induction

• By increasing the current

• By using a larger battery

What is the role of the secondary coil in the ignition system?

• To store electrical energy

• To induce a high voltage from the primary coil

• To increase the current

• To decrease the voltage

What happens when the knife switch is closed in the ignition system?

• A circuit is completed, allowing current to flow

• The magnetic field collapses

• The battery is disconnected

• The circuit is broken

What occurs when the knife switch is opened?

• The magnetic field builds up

• The current flow increases

• The magnetic field collapses, inducing a surge of current

• The battery charges

What is the purpose of the capacitor in the ignition system?

• To decrease the current

• To increase the voltage

• To absorb back EMF and prevent damage

• To store energy for later use

What is back EMF in the context of an ignition system?

• A forward surge of current

• A reverse surge of current

• A decrease in voltage

• A constant flow of current

How does the capacitor prevent damage in the ignition system?

• By reducing resistance

• By storing energy

• By absorbing excess current

• By increasing the voltage