Practice Exam Questions And Correct

Ohio Brake and Suspension Technician Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• Which component converts hydraulic pressure into mechanical force

at the wheel?

• Master cylinder
• Wheel cylinder
• Proportioning valve
• Brake booster

Rationale: The wheel cylinder pushes the brake shoes outward using

hydraulic pressure, converting it into mechanical force.

• What is the main function of a proportioning valve in a brake system?
• Increase pressure to the front brakes
• Balance pressure between front and rear brakes 1 / 4

• Release trapped air
• Adjust brake pedal travel

Rationale: The proportioning valve prevents rear-wheel lockup by

balancing brake pressure.

• Which suspension component primarily absorbs shock from road

irregularities?

• Shock absorber
• Coil spring
• Control arm
• Stabilizer bar

Rationale: Shock absorbers dampen spring oscillations and provide a

smooth ride.

• A vehicle pulls to one side during braking. Which of the following is

most likely the cause?

• Air in brake lines
• Uneven brake pressure or worn pads on one side
• Faulty master cylinder
• Low brake fluid level

Rationale: Uneven pressure or pad wear causes unequal braking

force, leading to a pull.

5. The master cylinder’s primary role is to:

• Generate hydraulic pressure in the brake system
• Apply vacuum assist 2 / 4

• Adjust pedal height
• Regulate brake bias

Rationale: The master cylinder converts pedal pressure into hydraulic

pressure for braking.

• What type of brake fluid is commonly used in most modern vehicles?

A. DOT 2

• DOT 3 only
• DOT 3 or DOT 4
• DOT 5 silicone-based

Rationale: DOT 3 and DOT 4 are glycol-based fluids compatible with

most systems.

• What is the purpose of the brake booster?
• Increase hydraulic pressure
• Reduce pedal travel
• Multiply pedal force using engine vacuum
• Control fluid flow

Rationale: The booster uses vacuum to assist braking, reducing pedal

effort.

8. A worn suspension bushing can cause:

• High brake pedal
• Steering wander or noise
• Brake fade
• Brake fluid leak 3 / 4

Rationale: Bushings isolate suspension movement; when worn, they

cause looseness and noise.

• When bleeding brakes, which wheel should be bled first?
• Front left
• Rear left
• Wheel farthest from the master cylinder
• Closest to the master cylinder

Rationale: Start with the farthest wheel to expel trapped air

effectively.

• What component maintains proper ride height under varying

loads?

• Shock absorber
• Leaf or coil spring
• Stabilizer link
• Control arm

Rationale: Springs support vehicle weight and maintain ride height.

11. A brake pedal that slowly sinks to the floor indicates:

• Air in system
• Internal leak in master cylinder
• Worn brake pads
• Faulty booster

Rationale: A sinking pedal is caused by fluid bypassing the master

cylinder seals.

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