TT October Pop Quiz: Friction
This month, we’re testing friction knowledge. Students should choose the answer that best completes the following statements.
1. Every time the brakes are applied, the pads rub against the ______ or drums and wear just a bit.
A: actuator
B: brake line
C: caliper
D: rotors
2. Because ______ and stability control systems are calibrated to the friction characteristics of the OEM brake linings, aftermarket replacement linings should closely match the friction characteristics of the OEM linings.
A: ABS
B: hydraulic
C: anti-roll
D: nonservo
3. All OEM brake linings must meet government safety standards. The _______________ require vehicles to stop within a certain distance.
A: Motorist Assurance Program (MAP
B: Automotive Service Excellence (ASE)
C: Occupational Safety & Health Administration (OSHA)
D: Department of Transportation (DOT)
4. Most premium pads incorporate features such as chamfers, slots and built-in shims to dampen ___________ which is the cause of noise.
A: pulsation
B: vibration
C: slippage
D: dust
5. Chamfers and slots change the ____________ on the surface of the pads and the frequency at which they vibrate to reduce noise.
A: diameter
B: loading
C: weight
D: airflow
6. Some premium pads are also ____________ to eliminate many of the problems that can occur if the pads are not properly burnished in.
A: pre-varnished
B: pre-barnished
C: pre-pressed
D: pre-dusted
7. The friction materials used on brake pads and shoes are called brake _________ .
A: linings
B: coatings
C: contacts
D: surfacers
8: For many decades, _________ was the standard brake lining material, but has been replaced by new materials such as composite/organic, ceramics and carbon fiber due to the health hazards associated with breathing its dust.
A: asbestos
B: fiberglass
C: sand
D: quartz
For the answers, please scroll down.
Answers are in bold
1. Every time the brakes are applied, the pads rub against the rotors or drums and wear just a bit.
A: actuator
B: brake line
C: caliper
D: rotors
2. Because ABS and stability control systems are calibrated to the friction characteristics of the OEM brake linings, aftermarket replacement linings should closely match the friction characteristics of the OEM linings.
A: ABS
B: hydraulic
C: anti-roll
D: nonservo
3. All OEM brake linings must meet government safety standards. The Department of Transportation standards require vehicles to stop within a certain distance.
A: Motorist Assurance Program (MAP
B: Automotive Service Excellence (ASE)
C: Occupational Safety & Health Administration (OSHA)
D: Department of Transportation (DOT)
4. Most premium pads incorporate features such as chamfers, slots and built-in shims to control noise and vibration.
A: pulsation
B: vibration
C: slippage
D: dust
5. Chamfers and slots change the loading on the surface of the pads and the frequency at which they vibrate to reduce noise.
A: diameter
B: loading
C: weight
D: airflow
6. Some premium pads are also “pre-burnished” to eliminate many of the problems that can occur if the pads are not properly broken in.
A: pre-varnished
B: pre-barnished
C: pre-pressed
D: pre-dusted
7. The friction materials used on brake pads and shoes are called brake linings.
A: linings
B: coatings
C: contacts
D: surfacers
8: For many decades, asbestos was the standard brake lining material, but has been replaced by new materials such as composite/organic, ceramics and carbon fiber due to the health hazards associated with breathing its dust.
A: asbestos
B: fiberglass
C: sand
D: quartz
