AUT105 Week 5 Mid-Term Test

Scrub brakes are an example of a simple _________ system.

• Pneumatic

• Hydraulic

• Mechanical

• Electrical

Tech A states that the band brake system worked well in the reverse direction. Tech B states that the band would try to unwind in the forward direction. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A states that designers can vary the size of the master cylinder to increase or decrease the force applied by a brake. Tech B states that the master cylinder of a brake system must always be of the same size. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Static friction is resistance between nonmoving surfaces and is present in which type of brakes?

• Parking

• Standard

• Both parking and standard

• All types

Which of the following is MOST likely to be a parking brake system on a vehicle?

• Top hat drum style

• Electric pull-cable style

• Electric motor caliper style

• All of the above

The air pressure for air brake systems comes from an engine-driven air compressor that pumps air into storage tanks.

• True

• False

Which of the following variables is related to pressure and force in a hydraulic system?

• Input force

• Working pressure

• Output force

• All the above

On a front-wheel drive vehicle, a load of about _______ on the rear wheels cannot provide enough braking force to stop the vehicle.

• 10%

• 20%

• 30%

• 40%

The brake booster receives approximately ____ of vacuum from the intake manifold.

• 10"

• 15"

• 20"

• 25"

Hydraulic boosters are always completely separate components from the master cylinder.

• True

• False