WorksheetsChapter 44 Review
Total questions: 100
Worksheet time: 50mins
Which of the following is the main purpose of a vehicle's suspension system?
To keep the tires in contact with the road surface and provide a smooth ride.
To increase the speed of the vehicle.
To reduce fuel consumption.
To improve the appearance of the vehicle.
What components typically make up a suspension system?
Springs, arms, struts, and shocks
Engine, transmission, and wheels
Seats, dashboard, and steering wheel
Battery, alternator, and radiator
What is the main cause of suspension problems in vehicles?
Wear from extended use
Poor fuel quality
Incorrect tire pressure
Faulty headlights
For a suspension system to work properly, what must be true about the wheels?
They must be in proper alignment from the factory and throughout the life of the vehicle.
They must be larger than the tires.
They must be made of aluminum.
They must be painted regularly.
What does unsprung weight include in a vehicle?
All components between the spring and the ground not supported by the springs
The engine and transmission
The seats and dashboard
The fuel tank and exhaust system
How does heavier unsprung weight affect vehicle control?
It increases the reaction force and makes the vehicle harder to control.
It improves fuel efficiency.
It reduces tire wear.
It makes the vehicle easier to steer.
Which of the following is supported by the springs in a vehicle?
The body, drivetrain, and associated parts
The tires and wheels only
The exhaust system only
The windshield and windows
What must the suspension system do when encountering large road forces on imperfect roads?
Absorb the forces and maintain the correct orientation of the vehicle
Increase the speed of the vehicle
Reduce the size of the tires
Turn off the engine
What is the role of nonmetallic materials in suspension systems?
Provide cushioning action and limit extreme suspension movement
Increase engine power
Reduce fuel consumption
Improve tire grip
In light vehicle applications, what is air primarily used for in suspension systems?
Ride height control
Cooling the engine
Inflating the tires
Powering the headlights
Springs in a suspension system are in what condition when supporting the weight of the vehicle?
Partially compressed
Fully extended
Not compressed at all
Completely rigid
How do springs respond when additional load is applied to a vehicle?
They compress further to absorb the load.
They expand and become longer.
They become stiffer and do not move.
They break immediately.
Why is it important for the wheels to remain in proper alignment throughout the life of the vehicle?
To ensure the suspension system works properly and maintains control and traction.
To make the vehicle look symmetrical.
To reduce the cost of repairs.
To increase the size of the tires.
Explain the difference between sprung and unsprung weight in a vehicle.
Sprung weight is supported by the springs, while unsprung weight is not.
Sprung weight is heavier than unsprung weight.
Unsprung weight includes the engine and transmission.
Sprung weight refers to the tires and wheels only.
What is the function of springs in a suspension system?
To provide the elastic medium that supports the body and absorb road forces.
To generate electricity for the vehicle.
To cool the engine.
To inflate the tires.
If a vehicle experiences excessive vibration and poor ride quality, which suspension system components should be inspected first and why?
Springs, arms, struts, and shocks, because they absorb road shocks and maintain tire contact.
The headlights, because they may be loose.
The seats, because they may be uncomfortable.
The windshield, because it may be cracked.
How would increasing the unsprung weight of a vehicle affect its handling and control? Provide reasoning.
It would make the vehicle harder to control due to increased reaction force.
It would improve fuel efficiency.
It would make the vehicle quieter.
It would reduce the need for suspension maintenance.
If a vehicle's suspension springs cannot flex and return to their original shape, what problems might arise?
The vehicle would not absorb road forces properly, leading to poor ride quality and possible damage.
The vehicle would accelerate faster.
The tires would last longer.
The engine would run cooler.
Which of the following best describes the function of dampening material in a vehicle's suspension system?
It increases the oscillation of the spring and body.
It absorbs energy from oscillation to prevent or reduce it.
It compresses the spring repeatedly.
It transfers force from the tire to the wheel.
What is meant by "oscillation" in the context of a suspension system?
The movement of the vehicle along its x-axis.
The fluctuating of an object between two states.
The transfer of force from the tire to the wheel.
The twisting pressure on the suspension system.
Which force refers to the lateral movement of the suspension system during turning?
Driving thrust
Braking torque
Cornering force
Oscillation force
What are the three common forces acting on suspension systems?
Roll, pitch, and yaw
Driving thrust, braking torque, and cornering force
Compression, rebound, and oscillation
Axle, shock absorber, and control arm
Which axis is described as the imaginary line drawn down the center of the vehicle from front to back?
x-axis
y-axis
z-axis
w-axis
In a basic suspension system, which component is described as flexible and can be leaf springs, coil springs, or torsion bars?
Axles
Shock absorbers
Springs
Control arms
Explain how movement around the x-axis, y-axis, and z-axis must be controlled during vehicle maneuvers.
Only movement around the x-axis needs to be controlled for stability.
Movement around each axis must be controlled to ensure proper handling and safety during all vehicle maneuvers.
Movement around the y-axis is not important for vehicle control.
Only the z-axis affects vehicle maneuvers.
A vehicle is turning left at high speed. Which force is primarily acting on the suspension system, and what is its effect?
Driving thrust; moves the vehicle forward.
Braking torque; tries to move the wheel backward.
Cornering force; causes lateral movement of the suspension system.
Oscillation; fluctuates the spring and body.
Which component is primarily responsible for driving and/or supporting the wheels in a vehicle's suspension system?
Axles
Shock absorbers
Control arms
Ball joints
What is the main function of shock absorbers in a vehicle's suspension system?
To support the wheels
To dampen spring oscillations by forcing oil through small holes in a piston
To connect the control arms
To reduce noise transfer and friction
Control arms in a vehicle’s suspension system serve which primary purpose?
Dampen spring oscillations
Act as load-bearing elements
Connect the spring to the frame
Reduce noise transfer
What are ball joints in the context of a vehicle’s suspension system?
Swivel connections mounted in the outer ends of the control arms
Metal straps wrapped around leaf springs
Pieces of steel used to control motion
Springs made of tempered steel
Why are springs used in vehicle suspension systems?
To drive the wheels
To suspend the vehicle weight over the axles and allow wheels to follow road unevenness
To reduce noise transfer
To connect the control arms
Which material is most commonly used to make springs in vehicle suspension systems?
Tempered steel
Spring steel
Composite materials
Special wire
Leaf springs are usually found in which type of vehicles?
Front-wheel drive vehicles
Rear-wheel drive vehicles
Electric vehicles
Hybrid vehicles
What is the purpose of rebound clips in leaf spring suspension systems?
To mount the spring to the frame
To prevent excessive flexing of the main leaf
To reduce noise transfer
To connect the spring eye to the bracket
How do insulators between the leaves of a leaf spring benefit the suspension system?
They increase load-carrying ability
They reduce noise transfer and friction
They support the wheels
They dampen spring oscillations
Which type of spring is commonly used on the front and rear suspension of most modern light vehicles?
Leaf springs
Coil springs (helical springs)
Composite springs
Rebound springs
What factors affect the load-carrying ability of coil springs in vehicle suspension systems?
Diameter of the wire, overall diameter of the spring, shape, and coil spacing
Length of the spring only
Material of the spring only
Number of leaves in the spring
Explain how the design of a wrap leaf in a leaf spring provides reinforcement. (DoK Level 2)
The ends of the second leaf are rolled around the eyes of the main leaf for reinforcement
The spring is made of tempered steel
The spring is mounted longitudinally
The spring is attached to the frame with a rigid hanger
Compare the ride quality provided by stiffer springs versus softer springs in vehicle suspension systems. (DoK Level 2)
Stiffer springs withstand heavier loads but produce a rougher ride; softer springs provide a smoother ride but may not support heavy loads
Stiffer springs always provide a smoother ride
Softer springs produce a rougher ride
Both provide the same ride quality
A vehicle manufacturer wants to reduce noise transfer and friction in their leaf spring suspension system. Which component should they focus on improving? (DoK Level 2)
Insulators between the leaves
Axles
Shock absorbers
Ball joints
A car designer is choosing between leaf springs and coil springs for a new model. What strategic factors should they consider regarding load-carrying ability and ride quality? (DoK Level 3)
Coil springs’ load-carrying ability depends on wire diameter, spring diameter, shape, and coil spacing; stiffer springs handle heavier loads but produce a rougher ride, while leaf springs are better for rear-wheel drive and can be made multi-leaf for increased strength
Leaf springs are always superior for all vehicles
Coil springs are only used in heavy trucks
Ride quality is not affected by spring choice
Given a scenario where a vehicle frequently travels on uneven road surfaces, which suspension component is most critical for maintaining wheel contact with the road, and why? (DoK Level 3)
Springs, because they suspend the vehicle weight over the axles and allow the wheels to follow the unevenness of the road surface
Axles, because they drive the wheels
Ball joints, because they swivel
Shock absorbers, because they dampen oscillations
What is the pitch of a spring?
The distance from the center of one coil to the center of the adjacent coil
The thickness of the wire used in the spring
The color of the spring
The material composition of the spring
Which type of spring pitch creates a constant rate of deflection?
Uniform pitch
Variable pitch
Progressive pitch
Irregular pitch
What happens to a spring with variable pitch under a light load?
It deflects easily
It becomes coil bound
It collapses into itself
It does not deflect at all
As a cylindrical coil compresses, what can it become?
Coil bound
Torsion bar
Sway bar
Shock absorber
What is a torsion bar?
A long alloy-steel bar attached rigidly to the chassis or subframe at one end and to a control arm at the other
A cylindrical coil spring
A type of shock absorber
A stabilizer bar used in light vehicles
What does a sway bar do in a vehicle?
Reduces body roll when cornering
Absorbs shock loads from irregular surfaces
Compresses under load to become coil bound
Supports the vehicle load by twisting around its center
How does the spring on the inside of the corner assist the spring on the outside of the corner when a vehicle corners?
It helps bear the additional load on the outside wheels
It absorbs shock loads from the road
It increases the pitch of the spring
It reduces the length of the torsion bar
What is the primary purpose of a shock absorber?
To absorb shock loads caused from driving on irregular surfaces
To reduce body roll when cornering
To support the vehicle load by twisting around its center
To create a constant rate of deflection
Explain how a sway bar transfers force in a suspension system.
By transferring the twisting force from one control arm to the other control arm
By absorbing shock loads from the road
By compressing under load to become coil bound
By increasing the pitch of the spring
A vehicle is experiencing excessive body roll when cornering. Which component is most likely not functioning properly?
Sway bar
Shock absorber
Coil spring
Torsion bar
What are shock absorbers with a heavy-duty housing mounted to the top of the steering knuckle called?
Struts
Springs
Dampers
Pistons
Which type of hydraulic shock absorber is most widely used?
Direct-acting telescopic type
Gas-pressurized type
Adjustable type
Twin-chamber type
What is the function of the outer tube in a direct-acting telescopic shock absorber?
Transfers heat to the outside air
Provides damping resistance
Acts as a piston rod
Controls fluid flow
How is damping resistance provided in a shock absorber?
By forcing oil past disc valves in the piston
By compressing nitrogen gas
By using a steel shroud
By adjusting the suspension member
What happens during jounce in a gas-pressurized shock absorber?
The piston moves downward and displaces oil equal to its volume
The piston moves upward and gas pressure increases
The rod and piston move outward
The oil is forced past check valves
Explain how adjustable shock absorbers enhance vehicle ride control.
They enable control through manually or electrically operated valves
They use nitrogen gas to increase pressure
They have a twin-tube design for better heat transfer
They use a steel shroud for protection
Compare the function of struts to shock absorbers in a vehicle’s suspension system.
Struts dampen spring oscillations and are a structural part of the suspension, while shock absorbers only dampen oscillations
Struts only provide damping, while shock absorbers are structural
Struts and shock absorbers have identical functions and structures
Shock absorbers are stronger than struts
Why does rapid piston movement in a shock absorber cause the oil to heat up?
Because the faster the oil moves, the greater its tendency to aerate
Because the piston rod displaces more oil
Because nitrogen gas is compressed
Because the outer tube is insulated
Which component can be incorporated into shock absorbers to enable a vehicle to support heavy loads without passenger discomfort?
Air shock
Coil spring
Hydraulic pump
Leaf spring
What is the primary function of the flexible rubber bladder in an air shock?
Seals the outside of the upper and lower halves of the shock absorber
Increases the oil flow restriction
Provides electronic control of ride quality
Acts as a load-bearing element
How can the air pressure in the bladder of an air shock be used?
To adjust the ride height
To lubricate the shock absorber
To increase the spring force applied to the valves
To change the shape of control arms
What happens to the extra air in an air shock when the load is removed?
It can be released through the filling valve
It increases the damping effect
It is used to lubricate the control arms
It is stored in the suspension system
Which type of shock absorber uses a coil spring around the outside to support heavy loads?
Coilover shock
Air shock
Electronic adjustable-rate shock
Hydraulic shock
What can be manually adjusted in manual adjustable-rate shock absorbers?
Damper rate
Wheel position
Control arm shape
Tire pressure
How does closing some of the orifices and increasing the spring force applied to the valves affect a shock absorber?
Increases the dampening effect
Decreases the ride height
Releases extra air
Changes the shape of control arms
How can the position of the valve in some shock absorbers be adjusted?
By turning a selector knob near the bottom of the shock
By inflating the rubber bladder
By changing the shape of the control arm
By pressing a button on the steering wheel
What feature do electronic adjustable-rate shock absorbers provide?
Driver-selected control of ride quality
Automatic tire inflation
Manual adjustment of control arms
Increased oil flow restriction
What is the purpose of the suspension in a vehicle?
To hold the wheels in the correct position to perform correctly
To increase engine power
To adjust the ride height
To lubricate the shock absorbers
What do control arms, rods, and steering knuckles help maintain?
The correct wheel position while keeping wheels in contact with the road
The air pressure in the shock absorber
The shape of the suspension system
The oil flow restriction in the shock absorber
What is a primary load-bearing element of a vehicle’s suspension system?
Control arms
Air shocks
Coil springs
Oil valves
Control arms can be formed in:
Different shapes
Only one shape
Circular shapes only
Rectangular shapes only
A driver uses a selector inside the passenger compartment to select between options such as sport, touring, or automatic in which type of shock absorber?
Electronic adjustable-rate shock absorber
Coilover shock absorber
Manual adjustable-rate shock absorber
Hydraulic shock absorber
Explain how manual adjustable-rate shock absorbers allow for changes in the damping effect.
By adjusting the number of valves and size of passageways in the piston
By inflating the rubber bladder
By changing the shape of control arms
By selecting ride quality options electronically
What is the role of control arms, rods, and steering knuckles in a vehicle’s suspension system?
They keep the wheels in contact with the road while maintaining the correct wheel position
They adjust the ride height
They provide electronic control of ride quality
They seal the shock absorber
If a vehicle is experiencing poor ride quality and the driver cannot adjust the ride settings, which type of shock absorber is likely NOT installed?
Electronic adjustable-rate shock absorber
Manual adjustable-rate shock absorber
Coilover shock absorber
Air shock absorber
A vehicle needs to support heavy loads without causing passenger discomfort. Which shock absorber design would you recommend and why?
Air shock, because it can be pressurized to assist the springs and adjust ride height
Coilover shock, because it uses a coil spring
Manual adjustable-rate shock, because it has adjustable valves
Electronic adjustable-rate shock, because it provides driver-selected control
Which term is used to describe the relatively flat triangular part that mounts to the frame or subframe at each leg of the A in the A-arm style?
Wishbone control arm
Steering knuckle
Tie-rod end
Strut rod
What is the primary function of rods in a vehicle’s suspension system?
To transfer or prevent motion within the suspension system
To lubricate moving parts
To provide electrical connections
To cool the engine
Which of the following is also known as a stub axle or spindle assembly?
Steering knuckle
Control arm
Ball joint
Strut rod
What is the purpose of ball joints and bushings at the ends of components?
To provide flexible connections to other components
To increase engine power
To reduce fuel consumption
To improve tire grip
Ball joints are typically constructed of which two main parts?
Ball and socket
Rod and tube
Axle and hub
Stud and nut
Which type of ball joint is used for steering linkage joints?
Tie-rod end
Spindle joint
Control rod joint
Strut rod joint
Describe how the steering knuckle assembly pivots and rotates for steering. Use evidence from the text to support your answer.
It pivots on a ball joint on the bottom and either a ball joint or a strut bearing on the top.
It rotates using a hydraulic pump.
It pivots on a spring and rotates on a gear.
It uses a fixed axle and does not rotate.
Explain the difference between a ball joint that is press-fit into the control arm and one that is held by rivets or bolts. Why might manufacturers choose one method over the other?
Press-fit ball joints are installed by pressing them into place, while riveted or bolted ball joints are secured with fasteners; manufacturers may choose based on ease of replacement and durability.
Both methods are identical and chosen randomly.
Riveted ball joints are always stronger than press-fit ball joints.
Press-fit ball joints are only used in older vehicles.
Which of the following is used to hold tension on a joint in a vehicle suspension system?
Belleville spring
Rubber seal
Grease zerk
Leaf spring
What is the primary function of a rubber seal in a ball joint?
Holds tension on the joint
Retains grease and keeps out dirt and water
Supports the weight of the vehicle
Acts as a pivot point
What is the difference between a loaded and an unloaded ball joint?
Loaded ball joint supports the weight of the vehicle, unloaded does not
Loaded ball joint is made of rubber, unloaded is metallic
Loaded ball joint is used in the rear suspension, unloaded in the front
Loaded ball joint acts as a pivot, unloaded does not
Technicians must differentiate between loaded and unloaded joints when testing for play. Why is this important?
To ensure proper lubrication
To determine if the joint supports vehicle weight or just holds the steering knuckle
To check for metallic composition
To measure the length of the joint
Ball joints are designed to carry which types of loads?
Compression or tension loads
Shear or bending loads
Rotational or axial loads
Thermal or electrical loads
What is the effect of compression forces on ball joints?
Push the ball into the socket, increasing bearing surface and socket strength near the base of the ball
Pull the ball apart, increasing strength near the stud end
Cause the joint to rotate
Reduce the need for lubrication
Bushings act as pivot points and cushions at suspension fulcrum points. What is their main purpose?
To allow limited movement while maintaining alignment
To support the weight of the vehicle
To hold tension on the joint
To increase engine power
Which materials can bushings be made of?
Metal, rubber, nylon, or urethane
Wood, glass, or ceramic
Paper, plastic, or foam
Steel, copper, or aluminum
What is the function of rubber bushings in a suspension system?
Isolate noise and harshness, dampen unwanted vibrations, and absorb small impacts
Increase the speed of the vehicle
Support the engine
Provide electrical insulation
What is a compliance bushing?
A voided section that allows controlled movement in the direction of the void
A metallic bushing used for strength
A spring used to hold tension
A seal that retains grease
What is the main function of all suspension systems?
Maintain proper positioning of the wheels and isolate occupants from the surface of the road
Increase engine power
Reduce fuel consumption
Improve vehicle aerodynamics
Explain how the design of a suspension system is determined.
By the intended use of the vehicle, cost of manufacturing, and layout of the drivetrain
By the color of the vehicle
By the size of the tires
By the type of fuel used
Which term refers to an axle that holds the wheels in their proper orientation but does not power them?
Live axle
Dead axle
Solid axle
Independent axle
What is the main difference between a live axle and a dead axle?
A live axle is always used in front-wheel drive vehicles.
A dead axle powers the wheels, while a live axle does not.
A live axle holds the wheels and drives them, while a dead axle only holds the wheels.
Both axles are used only in rear-wheel drive vehicles.
