WorksheetsQuiz on Learning Material Part 4 Section 3
Total questions: 86
Worksheet time: 43mins
What is the main focus of Part 4 Section 3 in the learning material?
Engine systems
Braking systems
Electrical systems
Transmission systems
What is one of the functions of a braking system on a vehicle?
Increase vehicle speed
Reduce vehicle speed
Enhance fuel efficiency
Improve aerodynamics
What type of system is a modern light vehicle braking system?
Pneumatic system
Hydraulic system
Electric system
Mechanical system
What is used to transfer pressure from the brake pedal to the pads or shoes in a hydraulic braking system?
Air
Brake fluid
Electric current
Mechanical linkage
What happens to the pressure in a hydraulic braking system?
It decreases as it moves through the system
It is equal throughout the system
It increases as it moves through the system
It fluctuates randomly
Which pistons are normally larger in diameter?
Those at the wheels, i.e., wheel cylinders or calipers.
Those in the engine block.
Those in the fuel pump.
Those in the transmission.
What is the disadvantage of having smaller pistons?
The smaller piston has to move further to make the larger pistons move a small amount.
The smaller piston requires more lubrication.
The smaller piston generates more heat.
The smaller piston is more expensive to manufacture.
What is the advantage of the diagonally split system when compared with the front/rear split?
If one line fails on the diagonal split, 50% of the braking efficiency is maintained.
It is cheaper to manufacture.
It requires less maintenance.
It provides better fuel efficiency.
What is the reason for using flexible pipes in part of the hydraulic system?
To allow steering and suspension movement without snapping the pipes.
To reduce the weight of the vehicle.
To increase the speed of fluid flow.
To decrease the cost of production.
What is a key requirement for brake fluid regarding viscosity?
It must be highly viscous to prevent leaks.
It must flow easily and work over a wide range of temperatures.
It should be thick to provide better lubrication.
It should be solid at room temperature.
Why is compatibility with brake components important for brake fluid?
It should enhance the color of the brake components.
It must resist corrosion and not react with rubber seals and hoses.
It should increase the weight of the brake system.
It should make the brake components more flexible.
What is the purpose of lubricating properties in brake fluid?
To increase the temperature of the brake system.
To reduce friction of moving parts, especially seals.
To make the brake fluid more colorful.
To solidify the brake fluid at high temperatures.
What does resistance to chemical aging ensure for brake fluid?
It must have a long life when stored and be stable in use.
It should change color over time.
It should evaporate quickly.
It should become more acidic with age.
Why is a high boiling point important for brake fluid?
It must vaporize under heavy braking.
It should boil at room temperature.
It must not vaporize under heavy braking.
It should freeze at high temperatures.
What is the significance of resistance to freezing in brake fluid?
It must freeze at low temperatures.
It should become solid in cold weather.
It must flow freely at all times.
It should thicken in cold conditions.
Why does the leading shoe wear at a greater rate than the trailing shoe?
It is made of softer material.
It has a 'self-servo' action and does up to 75% of the work.
It is used less frequently.
It is larger in size.
What friction materials may be used for brake linings?
Rubber and plastic
Glass fibre, Kevlar, and ceramics
Wood and metal
Asbestos and leather
What health hazards are associated with the dust from this friction material?
Skin irritation
Eye strain
Breathlessness and serious lung damage
Hearing loss
What is the purpose of the wheel cylinder in a braking system?
To pull shoes to the off position
To force brake shoes against the drum
To maintain the correct clearance
To apply the handbrake
What is the function of the return spring in a braking system?
To force brake shoes against the drum
To pull shoes to the off position when the brake is released
To maintain the correct clearance
To apply the handbrake
What is the role of the adjuster in a braking system?
To force brake shoes against the drum
To pull shoes to the off position
To maintain the correct clearance between the lining and drum
To apply the handbrake
What happens when the parking brake lever is applied?
The brake shoes are released
A cable pulls the lever, forcing the shoes onto the drum
The brake fluid is drained
The brake lights turn on
What is the function of a wheel cylinder in a braking system?
To energize the brake shoes using fluid pressure
To provide power to the engine
To cool down the brake pads
To inflate the tires
What component is used to prevent dust from entering the wheel cylinder?
Fluid seal
Dust cover
Circlip
Centralizing spring
What should you avoid doing when the brake drum is off?
Pressing the brake pedal
Turning the steering wheel
Accelerating the vehicle
Engaging the handbrake
Which part of the wheel cylinder is responsible for sealing the fluid?
Dust cover
Fluid seal
Circlip
Centralizing spring
What is the tool shown in the picture used for?
To clean and ensure the wheel cylinder bore is cylindrical
To tighten the wheel nuts
To inflate the tire
To measure tire pressure
What should be checked during the inspection of a piston?
Piston free movement and leaking seals
Piston color and size
Piston weight and material
Piston temperature and pressure
What is the function of the leading brake shoe in a drum brake system?
It is pulled harder into the drum by drum rotation, providing greater braking effect.
It releases the brake fluid pressure.
It acts as a pivot for the brake drum.
It adjusts the brake shoe position automatically.
In a drum brake system, what component is responsible for returning the brake shoes to their original position?
Twin piston wheel cylinder
Return spring
Automatic adjuster
Parking brake lever
Which component in the drum brake assembly is responsible for adjusting the brake shoe position automatically?
Trailing shoe
Automatic adjuster
Hold-down spring
Brake shoe pivot
Why is it necessary to adjust the brake shoes and pads as they wear down?
To increase the braking distance
To keep the brake pedal and handbrake lever travel as short as possible
To make the vehicle faster
To reduce the wear on tires
What happens when the foot brake is applied in the automatic brake adjuster system?
The shoes are pulled in
The shoes are pushed out
The shoes remain stationary
The shoes are rotated
What role does the interconnecting strut play in the automatic brake adjuster system?
It pushes the shoes apart
It pulls the long ratchet
It rotates the brake drum
It releases the brake pedal
What should be checked on a drum to ensure it is not oval?
Diameter
Circumference
Radius
Surface texture
What is a sign of excessive wear on a brake lining?
Exposed rivets
Smooth surface
Shiny appearance
Uniform thickness
What can cause contamination on a brake lining?
Axle oil or brake fluid
Water
Dust
Air
What is a characteristic of a normal fitting drum?
Circular shape
Oval shape
Square shape
Triangular shape
What is a DTI Gauge used for?
Measuring tire pressure
Measuring distortion and brake drum ovality
Measuring engine temperature
Measuring fuel levels
Can a DTI Gauge always be used for drum brake inspection?
Yes, always
No, not always
Only for new brakes
Only for old brakes
What is the function of the disc assembly in some vehicles with fixed or sliding calipers?
It is used as the main brake system.
It is used as the parking brake drum.
It is used to increase vehicle speed.
It is used to enhance fuel efficiency.
How is the parking brake typically adjusted in vehicles with this type of disc assembly?
Automatically through the brake pedal.
Manually through the back plate.
Electronically via a control module.
Hydraulically through the brake fluid.
What does the figure above show?
A section of a ventilated disc with a parking brake incorporated into the drum.
A complete braking system with hydraulic brakes.
A simple wheel without any braking mechanism.
A diagram of a car engine.
What is meant by 'brake fade'?
A condition where high temperatures reduce friction levels and brake performance falls off.
A situation where brakes become more effective over time.
A process of increasing brake efficiency by cooling.
A method of enhancing brake performance by adding more friction.
What should be checked when drum brakes are removed?
Only for oil leaks
Wear, scoring, ovality, cracks, and distortion
Just the linings for contamination
Only for seized wheel cylinders
What must be rectified if found in drum brakes?
Any oil or brake fluid leaks
Only wear and tear
Just scoring
Only cracks
What should linings be checked for in drum brakes?
Only for wear
Wear, security, and contamination
Just for security
Only for contamination
What is the component labeled as number 1 in the diagram?
Housing
Seal
Bleed screw
Piston
Which part is identified as number 6 in the diagram?
Pad
Yoke
Guide pin
Dust cover (boot)
In the diagram, what is the function of the component labeled as number 9?
To hold the brake pads in place
To detect pad wear
To seal the piston
To cover the dust
What is the name of the component labeled as number 4 in the diagram?
Guide sleeve
Piston
Seal
Guide pin
What is the function of the wear sensing indicators in brake pads?
To increase the braking power
To illuminate a warning light when pads wear beyond a point
To reduce noise during braking
To enhance the grip of the brake pads
How do the wear sensing indicators alert the driver when the brake pads are worn?
By changing the color of the brake pads
By making an audible squeal
By vibrating the brake pedal
By increasing the brake fluid pressure
What type of circuit is shown in diagram (A)?
Series circuit
Parallel circuit
Open circuit
Closed circuit
What type of circuit is shown in diagram (B)?
Series circuit
Parallel circuit
Open circuit
Closed circuit
What is one advantage of disc brakes over drum brakes?
They are heavier.
They are more prone to brake fade.
They are self-cleaning.
They have less air circulation.
What does the fluid pressure in a fixed caliper disc brake do?
It cools the brake pads.
It forces the friction pads against the disc.
It reduces the weight of the brake.
It increases the brake fade.
What is a characteristic of ventilated discs compared to solid discs?
They are lighter.
They have better air circulation.
They are more prone to overheating.
They have no fins.
What is the function of the pedal switch in the braking system?
To activate the stop lamp
To measure brake fluid level
To indicate brake pad wear
To control the speed of the vehicle
How does the pad/brake shoe wear indication system work?
It uses a magnetic float
It uses a contact embedded in the pad
It uses a temperature sensor
It uses a pressure gauge
What component is used to measure the fluid level in the braking system?
Pedal switch
Contact embedded in pad
Magnetic float and reed switch
Pressure sensor
What does the symbol with an exclamation mark inside a circle indicate in a vehicle?
Low brake fluid
Engine overheating
Low tire pressure
Fuel level low
What additional condition does the same symbol indicate when the handbrake is on?
Handbrake on
Engine oil low
Battery charging
Door open
What does the brake pad warning indicate?
Low brake pads via wire in the brake pads
High engine temperature
Low windshield washer fluid
High tire pressure
What is the function of the electric wire built into the brake pad in the electric type wear indicator?
It generates noise when the pad is worn.
It illuminates a warning light on the dashboard.
It is cut and short-circuits when the pad is worn.
It increases the braking force.
How does the audible type wear indicator alert the driver of worn brake pads?
By illuminating a warning light.
By generating noise when a metal piece touches the rotor.
By vibrating the brake pedal.
By reducing braking efficiency.
What is the function of the spring (C) in the parking brake mechanism?
It releases the pawl from the ratchet.
It holds the pawl in place on the ratchet until the handbrake button is pressed down.
It adjusts the tension of the cable.
It locks the handbrake lever in position.
How many clicks of the ratchet should the handbrake travel during a vehicle inspection for safe reserve travel?
One click
Two clicks
Three clicks
Four clicks
What is the purpose of the compensator in the parking brake system?
To increase the braking force.
To balance the tension between the cables.
To lock the wheels in place.
To release the handbrake automatically.
What component in a shoe and drum parking brake system exerts a balanced pull on the parking brake levers and struts?
Compensator
Cone
Secondary brake shoe
Left rear brake
What happens to the brake shoes in a shoe and drum parking brake system when the handbrake is applied?
They move inwards against the drum.
They move outwards against the drum.
They remain stationary.
They rotate with the drum.
What is the function of the actuating arm in a drum brake system?
To apply force to the brake shoes
To generate electrical signals
To cool down the brake system
To lubricate the brake components
In a drum brake system, which shoe is typically larger?
Front shoe
Rear shoe
Both are the same size
Neither, they are interchangeable
What are the two main types of electronic parking brake (EPB)?
Drive unit activated cable and electric motor on brake calipers
Hydraulic pump and manual lever
Pneumatic system and manual cable
Servo motor and hydraulic line
In the second method of EPB, what components are no longer required?
Cable and servo motor
Hydraulic pump and manual lever
Pneumatic system and manual cable
Electric motor and control unit
What is needed for connection to the separate control unit in the second method of EPB?
An electric cable that transfers data and power
A hydraulic line
A pneumatic tube
A manual lever
What is the function of the actuator screw in a caliper actuated brake system?
It rotates to push a cone against the piston.
It directly applies the brake pads to the disc.
It releases the parking brake lever.
It seals the piston.
In a caliper actuated brake system, what component is pushed against the inside of the piston?
Cone
Rotor
Screw
Brake pad
What is required to push the piston back in a caliper actuated brake system?
Piston Wind back tool
Hammer
Screwdriver
Wrench
What is the function of the actuator in the electronic parking brake system?
It applies the brakes on the caliper.
It adjusts the seat position.
It controls the air conditioning.
It operates the windshield wipers.
What should be done when replacing rear brake pads in some vehicles?
Calibrate via a Diagnostic Tester.
Change the engine oil.
Replace the windshield wipers.
Adjust the seat position.
What are the three purposes of the rubber seal around the piston in most disc brake arrangements?
As a fluid seal, a retraction spring, and an automatic brake adjuster
As a fluid seal, a temperature regulator, and a noise reducer
As a retraction spring, a temperature regulator, and a noise reducer
As an automatic brake adjuster, a temperature regulator, and a noise reducer
What happens to the piston during the application of the brake?
The piston distorts the seal and moves slightly through it
The piston remains stationary
The piston moves away from the seal
The piston compresses the seal completely
What occurs after the application of the brake in terms of the seal's function?
The seal returns to its original shape, pulling the piston back
The seal expands further, pushing the piston out
The seal remains distorted, keeping the piston in place
The seal disintegrates, requiring replacement
What should be checked when servicing disc brakes?
Only the thickness
Rust, thickness, wear, cracks, blue spots, parallelism, and run out
Just the wear and cracks
Only the blue spots
What should pads be checked for during disc brake servicing?
Only for thickness
For wear and seizure in the caliper
Just for rust
Only for parallelism
