Question

which type of antilock braking system (abs) requires the use of four wheel speed sensors?
one channel
two channel
four channel
three channel
question 6
1 pts
technician a says that abs brakes are designed to allow the front wheels to be steered during heavy braking. technician b says that the abs dash warning lamp is amber in color. which technician is correct?
technician a only
technician b only
both technicians
neither technician
question 7
1 pts
the faster a wheel rotates, the higher the frequency produced by a wheel speed sensor.
true
false

Explanation:

First Question (ABS type with four wheel speed sensors)

• One - channel ABS: Usually uses fewer sensors (e.g., one or two), not four.
• Two - channel ABS: Typically uses two or three sensors, not four.
• Four - channel ABS: Each wheel has its own speed sensor, so it requires four wheel speed sensors.
• Three - channel ABS: Usually has one sensor for each of the two front wheels and one shared for the rear wheels, so total three sensors.

• Technician A: ABS is designed to prevent wheel lock - up, which allows the front wheels (and all wheels in general) to be steered during heavy braking. So Technician A is correct.
• Technician B: The ABS dash warning lamp is typically amber in color. So Technician B is also correct.

Wheel speed sensors work by detecting the rotation of the wheel. As the wheel rotates faster, the number of times the sensor detects a change (e.g., a tooth on a reluctor ring) per unit time increases, which means the frequency of the signal produced by the sensor is higher.

Answer:

C. Four channel

Question 6 (Technician A and B)