Session 5 Ignition test 2 review

The VCMM is capable of handling how much voltage?

• 60 volts

• 1000 volts

• 400 volts

• 125 volts

Approximately how much voltage does a waste spark system "spend" to fire both plugs?

• 0-1kv

• 2-3kv

• 4-5kv

• 6-7kv

What kind of primary amperage would you expect to see on a modern day vehicle with coil on plug ignition?

• 12 amps

• 7 amps

• 3 amps

• 6 amps

On which ignition system is primary voltage no longer accessible?

• 3 wire coil on plug

• Distributor

• 2 wire coil on plug

• Points and condenser

Iridium spark plugs can reduce required coil voltage by as much as 20%, what is the main factor in this reduction?

• Fine tip electrode

• Higher primary voltage

• Lower resistance in iridium spark plug wires

• Number of ribs on the insulator

What would be the potential result of installing a hot plug in an engine requiring a cold plug?

• Pre-ignition

• Nothing

• Plug fouling

• Reduced combustion chamber temperatures

When measuring primary system voltage with a Picoscope, you should always use an attenuator to protect the scope.

• True

• False

Why is carbon added to the core of spark plug wires?

• To suppress RFI/EMI

• To increase conductivity

• To reduce resistance

• To increase rigidity of the wire

A high heat range type plug would have a:

• shorter insulator nose

• longer insulator nose

• medium insulator nose

• Split casing nose

How much current is generated in the secondary when the primary collapses?

• Amps

• Milliamps

• Picoamps

• Uberamps