20/21 Steering theory.

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1 What is the primary purpose of the Ackerman principle?

• A. Reduce tire wear
• B. Improve straight-line stability
• C. Ensure the inner and outer wheels steer at the correct angles during cornering
• D. Increase steering effort
• Option 5

2 What is Steering Axis Inclination (SAI)?

• A. The angle between the steering axis and a vertical line through the wheel center when viewed from the front
• B. The angle the wheels make with the road surface
• C. The alignment of the steering column with the chassis
• D. The angle of the steering wheel in a parked position

3 Which of the following steering angles helps the vehicle return to the straight-ahead position after cornering?

• A. Camber
• B. Caster
• C. Toe-in
• D. SAI

4 What is the effect of excessive positive camber?

• A. Increased inner tyre wear
• B. Decreased rolling resistance
• C. Increased outer tire wear
• D. Improved fuel efficiency

5 What is the purpose of toe-in on a light vehicle?

• A. Prevent oversteer
• B. Compensate for road crown
• C. Improve straight-line stability
• D. Enhance cornering grip

6 In a correctly set Ackerman steering system, what happens during a turn?

• A. Both wheels turn at the same angle
• B. The inner wheel turns at a sharper angle than the outer wheel
• C. The outer wheel turns at a sharper angle than the inner wheel
• D. Both wheels remain parallel

7 What is the typical range for caster angles in light vehicles?

• A. -5° to 0°
• B. 0° to 3°
• C. 3° to 7°
• D. 7° to 12°

8 What could cause uneven camber angles on a vehicle?

• A. Worn tie rods
• B. Bent suspension components
• C. Faulty steering rack
• D. Loose wheel bearings

9 What is a symptom of incorrect Ackerman geometry?

• A. Poor straight-line stability
• B. Uneven tire wear
• C. Reduced turning radius
• D. Increased rolling resistance
• Option 5