Ignition System Quiz

Why do gasoline engines need an ignition system?

• To initiate combustion on the power stroke

• To reduce noise

• To increase fuel efficiency

• To cool the engine

What type of engines are described as compression ignition engines?

• Gasoline engines

• Diesel engines

• Electric engines

• Hybrid engines

Which of the following is a characteristic of a secondary circuit?

• Operates on low 12-volt DC

• Carries high-voltage current

• Uses low-voltage AC

• Contains only resistors

What is the voltage level of the current in the primary circuit?

• 5 volts

• 12 volts

• 24 volts

• 48 volts

Which part of the spark plug helps in securing it to the engine?

• Threads

• Center electrode

• Ceramic insulator

• Side electrode

Which part of the spark plug is typically exposed to the combustion chamber?

• Ceramic insulator

• Steel shell

• Center electrode

• Hex nut

What does the side electrode do in a spark plug?

• Supports other parts

• Conducts electricity into the combustion chamber

• Causes electricity to jump gap and return to battery

• Keeps high voltage from shorting to ground

What is the primary function of the steel shell in a spark plug?

• Conducts electricity into the combustion chamber

• Supports other parts

• Causes electricity to jump gap

• Keeps high voltage from shorting to ground

What does the spark plug reach determine?

• The color of the spark plug

• The heat range of the spark plug

• How far the spark plug extends through the cylinder head

• The material of the spark plug

What is the primary material used in the center electrode of a non-resistor spark plug?

• Plastic

• Metal

• Rubber

• Wood