Technician a says that most horn circuits use a relay, and the current through the relay coil is controlled by the horn switch or body control module. technician b says that most windshield wipers use a two-brush, three-speed motor. who is correct?

a. both technicians a and b
b. technician a
c. technician b
d. neither technicians a nor b
the electrical terminals used for airbag systems are unique because they're

a. silver plated.
b. gold plated.
c. solid copper.
d. tin-plated heavy-gauge steel.
the rear power windows in a vehicle fail to operate from the independent switches but they do operate from the master switch. technician a says the window lockout switch may be on. technician b says the power window relay could be defective. which technician is correct?

a. technician a only
b. both technician a and technician b
c. technician b only
d. neither technician a nor technician b
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?

a. technician a only
b. both technician a and technician b
c. neither technician a nor technician b
d. technician b only
if two 4 ω speakers are connected in series, meaning the positive (+) of one speaker is connected to the negative (–) of the other, the total impedance will be

a. 4 ω.
b. 2 ω.
c. 8 ω.
d. 1 ω.
all of the following could damage a windshield washer pump except using

a. contaminated windshield washer fluid.
b. hot water with washer fluid.
c. pure water in freezing weather.
d. ethylene glycol (antifreeze).
an easy check of the adaptive front light (afs) is to

a. cycle the brake switch.
b. open and close the driver-side door.
c. check the brightness of the dome light.
d. make sure the system performs a self-test.
what color is used for airbag electrical connectors and conduit?

a. orange
b. red
c. yellow
d. blue
a keyless remote control stops working. technician a says the battery in the remote could be dead. technician b says that the key fob may have to be resynchronized. which technician is correct?

a. technician a only
b. technician b only
c. both technician a and technician b
d. neither technician a nor technician b
technician a says that most digital and analog (needle-type) dash gauges use variable resistance sensors. technician b says that permanent-magnet (pm) generators produce an ac signal and are used for vehicle speed and wheel speed sensors. which technician is correct?

a. both technician a and technician b
b. neither technician a nor technician b
c. technician b only
d. technician a only
bluetooth signal can typically travel

a. 33 feet.
b. 10 feet.
c. 33 meters.
d. 3.3 meters.
the temperature of heated seats is regulated by a

a. heavy insulation sensor.
b. seat cushion temperature sensor and seat module.
c. rheostat on the side of the seat.
d. heat sensor under the carpet.
if two 4 ω speakers are connected in parallel [positive (+) to positive (+) and negative (–) to negative (–)], the total impedance will be

a. 4 ω.
b. 2 ω.
c. 8 ω.
d. 1 ω.
when servicing headlights, why should you never touch the glass ampoule of a halogen bulb?

a. oil from your skin can cause the bulb to break.
b. you can absorb chemicals on the bulb through your skin.
c. the heat of your skin can affect the tint of the bulb.
d. leftover current can cause an electrical shock.
pm motors used in power windows, mirrors, and seats can be reversed by

a. reversing the polarity of the current to the motor.
b. sending current to a reversed field coil.
c. grounding the motor to the body of the vehicle.
d. using a relay and a two-way clutch.
technician a says backup sensors use leds to detect objects. technician b says that a backup sensor won't work correctly if the paint is thicker than 0.002 inch. which technician is correct?

a. neither technician a nor technician b
b. technician b only
c. technician a only
d. both technician a and technician b

a vehicle is being repaired after an airbag deployment. technician a says that it's a good idea to wait an additional 10 minutes after disconnecting the negative battery cable. technician b says rubber gloves should be worn to prevent skin irritation. which technician is correct?

a. technician a only
b. technician b only
c. both technician a and technician b
d. neither technician a nor technician b
technician a says that a radio may be able to receive am signals, but not fm signals, if the antenna is defective. technician b says that a good antenna should give a reading of about 500 ohms when tested with an ohmmeter between the center antenna wire and ground. which technician is correct?

a. neither technician a nor technician b
b. technician b only
c. technician a only
d. both technician a and technician b