AUT 105 Midterm 1

Scrub brakes are an example of a simple _________ system.

• Pneumatic

• Hydraulic

• Mechanical

• Electrical

Technician A says that disc brakes were originally developed in the early 1900’s but didn’t find common use until the 1960’s. Technician B says that a disc brake operates by squeezing brake pads on both sides of a rotor or disc. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician

Tech A states that regenerative braking makes a hybrid vehicle more fuel efficient. Tech B states that the electricity produced during regenerative braking is stored in the hybrid vehicle's high-voltage battery. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

The term _________ describes a type of brake system that forces brake shoes against the inside of a brake drum.

• Drum brake

• Scrub brake

• Disc brake

• Down brake

Which of these is a simple mechanical system that uses leverage to force a friction block against one or more wheels?

• Drum brake

• Band brake

• Scrub brake

• Disc brake

The effectiveness of friction brakes depends on the braking components' ________.

• Life cycle

• Response time

• Frictional resistance

• Ability to dissipate heat quickly into the atmosphere

________ causes the front wheels to have increased traction, allowing them to bear more of the stopping load, and causes the rear wheels to have less traction, reducing the amount of load they can bear.

• Energy transformation

• Weight transfer

• Rotational force

• None of the above

All of the below statements are true EXCEPT:

• Service brakes consist of drum and/or disc brakes and are operated by hand.

• The parking brake is used for holding the vehicle in place when it is stationary.

• In disc brakes, pads are forced against the outside of a brake disc.

• Modern braking systems are hydraulically operated.

If the speed of an object is doubled, the kinetic energy will increase by _______ times.

• Four

• Six

• Eight

• Ten

Kinetic friction is resistance between moving surfaces and is present in which type of brakes?

• Parking

• Service

• Both parking and service

• All types