Automotive Electrical Systems Quiz

Technician A says that the bulb trade number is the same for all bulbs of the same size. Technician B says that a dual-filament bulb has different candlepower ratings for each filament. Which technician is correct?

• Technician A only

• Technician B only

• Both Technicians A and B

• Neither Technician A nor B

Two technicians are discussing flasher units. Technician A says that only a DOT-approved flasher unit should be used for turn signals. Technician B says that a parallel (variable-load) flasher will function for turn signal usage, although it will not warn the driver if a bulb burns out. Which technician is correct?

• Technician A only

• Technician B only

• Both Technicians A and B

• Neither Technician A nor B

Interior overhead lights (dome lights) are operated by door jamb switches that _________. Complete the power side of the circuit. Complete the ground side of the circuit. Move the bulb(s) into contact with the power and ground. Either a or b depending on application

• Complete the power side of the circuit.
• Turn on automatically when the engine is running.
• Complete the ground side of the circuit.
• Are controlled by the radio.

Electrical feedback is usually a result of _________.

a.Too high a voltage in a circuit.

b. Too much current (in amperes) in a circuit.

Lack of a proper ground.

Both a and b

• Both a and b
• Presence of a proper ground.
• Too little current (in amperes) in a circuit.
• Too low a voltage in a circuit.

Which bulb is brightest?

• #194

• #168

• #194NA

• #1157

If a #1157 bulb were to be installed in a left front parking light socket instead of a #2057 bulb, what would be the most likely result?

• The left turn signal would flash faster

• The left turn signal would flash slower

• The left parking light would be slightly brighter

• The left parking light would be slightly dimmer

A technician replaced a #1157NA with a #1157A bulb. Which is the most likely result?

• The bulb is brighter because the #1157A candlepower is higher

• The amber color of the bulb is a different shade

• The bulb is dimmer because the #1157A candlepower is lower

• Both b and c

A customer complained that every time he turned on his vehicle's lights, the left-side turn signal indicator light on the dash remained on. The most likely cause is ________.

• A poor ground to the parking light (or taillight) bulb on the left side

• A poor ground to the parking light (or taillight) bulb on the right side, causing current to flow to the left-side lights

• A defective (open) parking light (or taillight) bulb on the left side

• Both a and c

A defective taillight or front park light bulb could cause

• The turn signal indicator on the dash to light when the lights are turned on

• The dash lights to come on when the brake lights are on

• The lights-on warning chime to sound if the brake pedal is depressed

• All of the above

A defective brake switch could prevent proper operation of the ________.

• Cruise control

• ABS brakes

• Shift interlock

• All of the above