Deck 8: Lighting Circuits Lighting Circuits Repair and Diagnosis

Question 1

In a composite headlight:

A) The bulb is replaceable.
B)A cracked lens will prevent lamp operation.
C)All of these choices.
D)None of these choices.

Answer 1

A

Question 2

How is a three-bulb taillight system wired?

A) It has a common brake turn signal bulb .
B) It uses separate bulbs for turn signals and brake lights .
C)All taillights are wired in series .
D) It uses side markers that flash in the rear .

Answer 2

D

Question 3

Which of the following lamp designs have the fastest activation time?

A)Halogen.
B) Neon .
C)Tungsten .
D) LED .

Answer 3

D

Question 4

Which of the following is NOT used to control the brightness of the instrument panel lamps?

A) Diodes .
B) Potentiometers .
C)Rheostats .
D) Pulse width modulation .

Question 5

Which of the following statements about the turn signal circuit is NOT correct?

A) The dimmer switch is not a part of the circuit.
B)Most flashers use a bimetallic strip to open and close the circuit.
C) The turn signals operate only when the neutral safety switch is open.
D)The turn signal switch provides the means for lighting brake lights when the turn signals are operating.

Question 6

Which statement about the cornering light system is NOT correct?

A) The cornering lights use an additional set of contacts in the turn signal switch.
B)The cornering lights can receive voltage from the ignition switch.
C)The cornering lights can receive voltage from the headlight switch.
D)The cornering lights can operate only if the vehicle speed sensor input indicates speeds over 3 mph (4.8 kph).

Question 7

Which of the following best describes the function of the bi-xenon headlight system?

A)Uses double filament headlights to provide the high beam output.
B)Use a chamber filled with multiple xenon gases that are ignited at different temperatures to provide high beam and low beam operation.
C)Uses multiple chamber of xenon gas that are ignited based on dimmer switch position. One chamber is for low beam, and both chambers are ignited for high beam.
D)None of these choices.

Question 8

Which of the following statements is true concerning headlight circuits?

A)The circuits can have totally insulated bulbs and grounded switches .
B)All lamp filaments are connected in parallel .
C)Some circuits use lamps that contain both a high beam and a low beam .
D) All of these choices .

Question 9

When the headlights are switched from low beam to high beam all headlights go out. All of the following can cause this EXCEPT:

A)Faulty dimmer switch.
B)Defective high-beam relay .
C)Defective ignition switch .
D)Open in high-beam circuit .

Question 10

In the two-bulb taillight assembly:

A)The brake lights use the high-intensity filament of the taillight bulb.
B)The current to the brake lights flows through the turn signal switch.
C)All of these choices.
D)None of these choices.

Question 11

To assist in headlight aiming, most sealed beam lenses use:

A) Connecting prongs .
B) Aiming pads .
C)Filaments .
D) None of these choices .

Question 12

What are non-electronic turn signal flasher units acting like when they supply a rapid on-off-on current flow to the turn signal lamps?

A) Circuit breakers .
B) Fuses .
C)Zener diodes .
D) Transistorized regulators .

Question 13

None of the turn signals operate. The LEAST likely cause of this is:

A)Burned-out bulbs .
B)Faulty turn signal switch .
C)Faulty turn signal flasher .
D)Open circuit from ignition feed to turn signal .

Question 14

Current to the brake light switch usually comes from the:

A) Ignition switch feed.
B)Headlight switch feed.
C)Turn signal switch feed.
D)Direct battery feed.