Ackermann steering geometry reduces what during a turn?
A Engine knock
B Brake fade
C Tire scrub
D Suspension bounce
Answer: C. Tire scrub. Ackermann geometry makes inner and outer wheels follow different steering angles.
Caster angle is viewed in which plane?
A Front plane
B Side plane
C Horizontal plane only
D Wheel tread plane
Answer: B. Side plane. Caster is the fore-aft inclination of the steering axis viewed from the side.
Camber angle describes wheel tilt viewed from what direction?
A Front of vehicle
B Side of vehicle
C Above vehicle
D Behind the axle only
Answer: A. Front of vehicle. Camber is inward or outward wheel tilt viewed from the front.
Toe describes wheel direction viewed from what?
A Above vehicle
B Front only
C Side only
D Under the road
Answer: A. Above vehicle. Toe is the inward or outward pointing of wheels viewed from above.
Rack-and-pinion steering converts pinion rotation into what?
A Wheel rotation only
B Brake pressure
C Suspension spring force
D Rack translation
Answer: D. Rack translation. The pinion turns and moves the toothed rack laterally.
Power steering reduces what driver effort?
A Braking distance
B Engine compression
C Tire rolling radius
D Steering effort
Answer: D. Steering effort. Hydraulic or electric assistance lowers steering wheel effort.
A suspension spring supports vehicle load and what?
A Creates brake pressure
B Stores elastic energy
C Changes gear ratio
D Measures wheel speed
Answer: B. Stores elastic energy. Springs support the vehicle and deflect to absorb road inputs.
A shock absorber primarily dissipates what?
A Suspension oscillation energy
B Engine fuel energy
C Brake fluid pressure
D Steering torque
Answer: A. Suspension oscillation energy. Dampers convert suspension motion into heat and control oscillation.
An anti-roll bar resists what body motion?
A Pitch only
B Wheel spin
C Body roll
D Engine vibration
Answer: C. Body roll. The stabilizer bar couples left and right suspension to resist roll.
Wheel alignment affects tire wear and what?
A Fuel octane
B Engine timing
C Battery voltage
D Directional stability
Answer: D. Directional stability. Alignment influences handling, straight-line tracking and tire wear.
A disc brake slows a wheel by clamping pads against what?
A Drum lining
B Axle shaft
C Tire tread
D Rotor
Answer: D. Rotor. Brake pads squeeze the rotating disc or rotor.
A drum brake presses shoes against what?
A Rotor face
B Transmission gear
C Wheel bearing
D Drum inner surface
Answer: D. Drum inner surface. Brake shoes expand against the drum’s inner cylindrical surface.
The master cylinder converts pedal force into what?
A Electrical current
B Hydraulic pressure
C Engine torque
D Tire force directly
Answer: B. Hydraulic pressure. The master cylinder pressurizes brake fluid in the hydraulic circuit.
A brake booster reduces what required by driver?
A Brake temperature
B Pedal effort
C Wheel radius
D Hydraulic pressure
Answer: B. Pedal effort. The booster assists the driver’s force to generate braking pressure.
ABS prevents wheels from what under hard braking?
A Rotating faster
B Turning with steering
C Locking
D Increasing tire pressure
Answer: C. Locking. ABS modulates brake pressure to avoid sustained wheel lock.
Electronic brake-force distribution adjusts what?
A Engine power
B Steering ratio
C Brake force by wheel
D Suspension height only
Answer: C. Brake force by wheel. EBD distributes braking force based on load and wheel conditions.
Regenerative braking recovers kinetic energy into what?
A Exhaust heat
B Fuel pressure
C Suspension energy
D Electrical energy
Answer: D. Electrical energy. An electric motor operates as a generator during regenerative braking.
A tire tread primarily provides what?
A Road grip and drainage
B Engine cooling
C Brake fluid storage
D Steering assistance
Answer: A. Road grip and drainage. Tread blocks transmit force and help evacuate water.
Tire sidewall marking includes load rating and what?
A Speed rating
B Gear ratio
C Brake diameter
D Battery capacity
Answer: A. Speed rating. Tire markings include size, load index and speed symbol.
Underinflated tires increase what resistance?
A Gear backlash
B Rolling resistance
C Brake clearance
D Aerodynamic lift only
Answer: B. Rolling resistance. Underinflation increases tire deformation and rolling losses.
A wheel bearing allows low-friction what?
A Engine combustion
B Wheel rotation
C Brake pressure
D Steering rack travel
Answer: B. Wheel rotation. Wheel bearings support wheel loads while permitting rotation.
MacPherson strut combines damper with what structural function?
A Brake master cylinder
B Drive gear
C Suspension locating member
D Steering wheel
Answer: C. Suspension locating member. The strut is both a damper and part of the wheel-location structure.
A leaf spring can also locate which component?
A Live axle
B Steering rack
C Brake rotor
D Fuel tank
Answer: A. Live axle. Leaf springs may support and locate a solid rear axle.
Brake fade occurs when braking performance decreases due to what?
A Excessive heat
B Cold tire pressure
C Low fuel octane
D High wheelbase
Answer: A. Excessive heat. Heat can reduce friction and braking effectiveness.
A parking brake primarily holds a stationary vehicle using what?
A Engine compression only
B Transmission oil
C Mechanical brake actuation
D Air conditioning
Answer: C. Mechanical brake actuation. The parking brake mechanically applies braking force when parked.