ASVAB Automotive Information Practice Test 812581

Question 4 of 5
Power Brakes

Power brakes multiply the force a driver applies to the brake pedal using a vacuum booster connected to the engine intake manifold. This provides for much higher hydraulic pressure in the braking system than could be generated by the driver alone. Antilock brakes (ABS) use speed sensors and adjust the brake pressure at each wheel to prevent skidding and allow the driver more steering control in slippery conditions.

What is the pimary advantage of using power brakes on a vehicle?

allows the use of antilock brakes

provides higher hydraulic pressure in the braking system

requires less brake fluid to operate the braking system

utilizes battery power to assist in braking