Ignition Systems Quiz

What are the three essential components required by a petrol engine to produce combustion?

• Air, fuel, and a source of ignition

• Water, oil, and a spark plug

• Electricity, fuel, and a piston

• Air, oil, and a battery

What is the role of the ignition system in a petrol engine?

• To cool the engine

• To supply high voltage to the spark plug

• To lubricate the engine parts

• To increase fuel efficiency

Why is it critical for the ignition system to supply a spark at the right time?

• To prevent engine overheating

• To ensure the engine starts

• To ignite the air and fuel mixture efficiently

• To reduce noise pollution

What is the primary function of the low tension (LT) circuit in an ignition system?

• To deliver high voltages to the spark plugs.

• To connect to the car’s main 12 V electrical system.

• To provide information about crankshaft speed.

• To control the timing of the ignition.

What does the high tension (HT) circuit do in an ignition system?

• It connects to the car’s main 12 V electrical system.

• It delivers high voltages to the spark plugs.

• It provides information about crankshaft speed.

• It controls the ignition switch.

Which component in the ignition system has connections to both the LT and HT circuits?

• Battery

• Distributor

• Coil

• Spark plugs

What is the function of an ignition coil?

• It stores electrical energy.

• It transforms electrical energy between circuits.

• It generates mechanical energy.

• It insulates electrical circuits.

Which winding in an ignition coil has more turns?

• Primary winding

• Secondary winding

• Both have equal turns

• Neither has turns

What is the purpose of the high voltage induced in the secondary winding?

• To charge the battery.

• To create an arc across a spark plug gap.

• To power the ignition lead.

• To reduce the magnetic field.

What type of ignition system was commonly used in cars up to the 1970s?

• Mechanical distributor

• Electronic control unit

• Coil pack

• Breakerless ignition