ASVAB Automotive Information Practice Test 99946

Question 2 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?

requires less brake fluid to operate the braking system

allows the use of antilock brakes

utilizes battery power to assist in braking

provides higher hydraulic pressure in the braking system