Brakes Review Questions with All
Correct Answers
Which brake shoe in a non-servo drum brake assembly is energized during braking
when a vehicle is traveling in a forward direction? - Answer-Leading shoe
When the driver depresses the brake pedal of the typical truck with air-over-hydraulic
brakes, which of the following occurs? - Answer-Modulated air pressure actuates
pneumatic booster assemblies.
Technician A says that ABS hydraulic brake systems should be bled using a bleeder
ball. Technician B says that a bleeder ball should be charged with shop air pressure.
Who is correct? - Answer-Technician A only
You are measuring the axial TIR of a hydraulic brake rotor and through one revolution
you measure +0.003-inch and -0.006-inch. What is the TIR? - Answer-0.009-inch
What should be used to remove pitting and corrosion from an aluminum master
cylinder? - Answer-None of the above
Which of the following features of a hydraulic brake system are mandatory by FMVSS
105 compliant vehicle? - Answer-Mechanical emergency brake, Dual hydraulic circuits,
Mechanical parking brakes
What is primary cause of disc brake rotor warpage? - Answer-Over-heating
Which of the following valves is designed to reduce rear wheel lock-up to balance a
disc/drum system? - Answer-Proportioning valves, Metering valve, Pressure differential
valve
What is the most common type of parking brake used on trucks equipped with an air-
over-hydraulic system? - Answer-Canister-Spring brake
Technician A says that excessive rotor runout can cause brake pedal chatter.
Technician B says that excessive rotor runout can cause decreased pedal travel. Who
is correct? - Answer-Both A & B
When honing a cast iron master cylinder, what should be used to lubricate the hone? -
Answer-Brake Fluid
Correct Answers
Which brake shoe in a non-servo drum brake assembly is energized during braking
when a vehicle is traveling in a forward direction? - Answer-Leading shoe
When the driver depresses the brake pedal of the typical truck with air-over-hydraulic
brakes, which of the following occurs? - Answer-Modulated air pressure actuates
pneumatic booster assemblies.
Technician A says that ABS hydraulic brake systems should be bled using a bleeder
ball. Technician B says that a bleeder ball should be charged with shop air pressure.
Who is correct? - Answer-Technician A only
You are measuring the axial TIR of a hydraulic brake rotor and through one revolution
you measure +0.003-inch and -0.006-inch. What is the TIR? - Answer-0.009-inch
What should be used to remove pitting and corrosion from an aluminum master
cylinder? - Answer-None of the above
Which of the following features of a hydraulic brake system are mandatory by FMVSS
105 compliant vehicle? - Answer-Mechanical emergency brake, Dual hydraulic circuits,
Mechanical parking brakes
What is primary cause of disc brake rotor warpage? - Answer-Over-heating
Which of the following valves is designed to reduce rear wheel lock-up to balance a
disc/drum system? - Answer-Proportioning valves, Metering valve, Pressure differential
valve
What is the most common type of parking brake used on trucks equipped with an air-
over-hydraulic system? - Answer-Canister-Spring brake
Technician A says that excessive rotor runout can cause brake pedal chatter.
Technician B says that excessive rotor runout can cause decreased pedal travel. Who
is correct? - Answer-Both A & B
When honing a cast iron master cylinder, what should be used to lubricate the hone? -
Answer-Brake Fluid
