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WorksheetsDSL 204 Brakes - final
Total questions: 43
Worksheet time: 22mins
Identify and describe physical concepts and the effects of vehicle speed and weight on braking performance.
Vehicle speed and weight have no effect on braking performance.
Increased vehicle speed and weight decrease braking distance.
Increased vehicle speed and weight increase braking distance.
Vehicle speed affects braking performance, but weight does not.
Identify types of braking systems.
Disc brakes, Drum brakes, and Anti-lock braking system (ABS)
Hydraulic brakes, Pneumatic brakes, and Electromagnetic brakes
Mechanical brakes, Electric brakes, and Regenerative brakes
All of the above
Identify and describe the construction and operation of S-cam brake components.
S-cam brakes are constructed with a camshaft and operate by rotating the cam to push the brake shoes apart.
S-cam brakes use hydraulic pressure to apply force to the brake shoes.
S-cam brakes are constructed with a disc and caliper system.
S-cam brakes operate using electromagnetic force to engage the brake shoes.
Identify and explain the concepts of brake torque and brake balance.
Brake torque is the force applied to stop a vehicle, while brake balance refers to the distribution of braking force between the front and rear wheels.
Brake torque is the distribution of braking force between the front and rear wheels, while brake balance is the force applied to stop a vehicle.
Brake torque and brake balance both refer to the force applied to stop a vehicle.
Brake torque and brake balance both refer to the distribution of braking force between the front and rear wheels.
Identify and describe the purpose and construction of brake drums.
Brake drums are used to stop a vehicle by converting kinetic energy into heat energy through friction.
Brake drums are used to accelerate a vehicle by converting heat energy into kinetic energy.
Brake drums are used to cool down the engine by dissipating heat energy.
Brake drums are used to enhance fuel efficiency by reducing energy consumption.
33-9 Classify and describe the types, purpose, construction, and operation of slack adjusters.
Slack adjusters are used to adjust the tension of the brake system.
Slack adjusters are part of the vehicle's suspension system.
Slack adjusters are used to control the steering mechanism.
Slack adjusters are components of the vehicle's transmission system.
33-10 Identify and describe the construction and operation of air disc brakes.
Air disc brakes use a caliper to squeeze a pair of pads against a disc or rotor to create friction.
Air disc brakes use hydraulic fluid to transfer pressure from the controlling mechanism to the braking mechanism.
Air disc brakes rely on electromagnetic force to slow down the vehicle.
Air disc brakes are primarily used in bicycles and motorcycles.
A brake chamber is a component of a vehicle's braking system. What is its primary function?
To increase the vehicle's speed
To convert air pressure into mechanical force
To store brake fluid
To measure tire pressure
A diaphragm in the context of braking systems is:
a component that helps in the cooling of brakes
a flexible membrane that transmits force
a type of brake pad material
a part of the brake caliper
What are clevises in braking systems?
A type of fastener used to connect components
A type of brake pad
A hydraulic component
A type of brake fluid
Identify and describe the physical concepts and the effects of vehicle speed and weight on braking performance.
Vehicle speed and weight have no effect on braking performance.
Increased vehicle speed and weight decrease braking distance.
Increased vehicle speed and weight increase braking distance.
Vehicle speed affects braking performance, but weight does not.
Identify and describe the construction and operation of S-cam brake components.
S-cam brakes use a camshaft to apply force to the brake shoes.
S-cam brakes are operated by hydraulic pressure.
S-cam brakes are used in bicycles.
S-cam brakes are a type of disc brake.
Identify and describe the effects of vehicle speed and weight on braking performance. What must a vehicle be capable of doing faster than it can accelerate?
Vehicle speed and weight have no effect on braking performance. A vehicle must be capable of braking faster than it can accelerate.
Vehicle speed and weight affect braking performance. A vehicle must be capable of accelerating faster than it can brake.
Vehicle speed and weight affect braking performance. A vehicle must be capable of braking faster than it can accelerate.
Vehicle speed and weight have no effect on braking performance. A vehicle must be capable of accelerating faster than it can brake.
Which has an effect on the braking system power: increasing vehicle speed or vehicle weight?
Increasing vehicle speed
Increasing vehicle weight
What causes the transfer of torque from the slowing wheel end to the axle through the brake mechanism?
Friction between the brake pads and the wheel
Hydraulic pressure in the brake lines
Mechanical linkage in the brake system
Electronic control unit intervention
What are the three basic types of brake foundation configurations found in medium- and heavy-duty commercial vehicles?
Disc brakes, drum brakes, and wedge brakes
Hydraulic brakes, air brakes, and electric brakes
Single-piston brakes, dual-piston brakes, and triple-piston brakes
Mechanical brakes, electronic brakes, and magnetic brakes
Identify and describe the purpose and construction of brake drums. As considerable heat is generated during braking, brake drums must resist distortion and brake fade; resist wear, scoring, and heat damage; and absorb heat and transfer it to the outer surface.
Brake drums are designed to resist distortion and brake fade, wear, scoring, and heat damage, while absorbing and transferring heat to the outer surface.
Brake drums are primarily used to increase the speed of a vehicle.
Brake drums are constructed to minimize noise during braking.
Brake drums are used to enhance the aesthetic appearance of a vehicle's wheels.
What are the methods used to balance brake drums at the factory?
Using weights
Machining
Both using weights and machining
None of the above
How do dual-brake chambers function under emergency conditions?
They apply the brakes automatically.
They release the brakes.
They maintain the current brake pressure.
They disable the braking system.
Classify and describe the types, purpose, construction, and operation of slack adjusters.
Slack adjusters are used to adjust the tension in belts.
Slack adjusters are components in braking systems that adjust the clearance between the brake drum and the brake lining.
Slack adjusters are used to control the speed of a vehicle.
Slack adjusters are part of the steering mechanism in vehicles.
Identify and describe the construction and operation of air disc brakes.
Air disc brakes use a caliper to squeeze a pair of pads against a disc or rotor to create friction.
Air disc brakes rely on hydraulic fluid to transfer pressure from the control to the brake mechanism.
Air disc brakes are primarily used in bicycles and motorcycles for their lightweight design.
Air disc brakes are an outdated technology and are rarely used in modern vehicles.
Explain the effects of weight and speed on braking requirements.
Weight and speed do not affect braking requirements.
Higher weight and speed increase braking requirements.
Only speed affects braking requirements, not weight.
Only weight affects braking requirements, not speed.
What is the primary method of choice to multiply brake force for highway trucks?
Air brakes
Hydraulic brakes
Electric brakes
Magnetic brakes
True or False: Air brake systems can handle small system leaks without adverse effects.
True
False
Under which federal regulation are air brake systems subject?
Federal Motor Vehicle Safety Standards (FMVSS)
Federal Aviation Regulations (FAR)
Occupational Safety and Health Administration (OSHA) Standards
Environmental Protection Agency (EPA) Regulations
S-cam used in cam brakes can be left- or right-handed.
True
False
The purpose of actuators having dual chambers is to:
increase efficiency by providing balanced force in both directions
reduce the size of the actuator
simplify the design
increase the cost
The function of slack adjusters in modern vehicles is to:
adjust the tension of the brake system
control the steering mechanism
regulate the fuel injection
monitor the air conditioning system
How much more additional braking force is required by a vehicle weighing 40,000 lb (18,144 kg) braking from 50 mph (80 kph), compared to the force required to brake when it weighs 80,000 lb (36,287 kg)?
The same amount of brake force is required.
Two times more braking force required.
Four times more braking force is required.
Half the braking force is required.
Which of these best describes hydrophilic?
The fluid does not absorb moisture.
The ability of the fluid to absorb moisture
The ability of the fluid to absorb water
The ability of the fluid to absorb air
A typical flex line construction uses a Teflon inner seal layer protected by __________ and reinforced with braided steel mesh to resist swelling during brake applications.
Spectra
Dyneema
Kevlar
Nylon
Brake (a) are used to pull the brake shoes back to resting position away from the brake drums when the brakes are released.
While driving down a hill, Sophia noticed her car slowing down as she applied the brakes. What do brakes use to convert a vehicle's kinetic energy into heat energy?
it improves the braking performance by preventing overheating.
it reduces the weight of the vehicle.
it enhances the aesthetic appearance of the vehicle.
it increases the fuel efficiency of the vehicle.
Which type of braking system is commonly used in heavy vehicles like trucks and buses?
Mechanical braking system
Hydraulic braking system
Electromagnetic braking system
Pneumatic braking system
What is the primary function of friction in braking systems?
To increase the speed of the vehicle
To convert kinetic energy into heat
To reduce the wear and tear of brake pads
To enhance the fuel efficiency of the vehicle
What is the role of the master cylinder in a hydraulic braking system?
To generate hydraulic pressure
To cool the brake fluid
To measure brake pad wear
To control the vehicle's speed
In a hydraulic brake system, what happens when the brake pedal is pressed?
Air pressure increases
Brake fluid pressure increases
Brake fluid freezes
Brake fluid evaporates
Which of the following is NOT a component of a disc brake system?
Brake disc
Brake drum
Brake caliper
Brake pads
Why is brake fluid important in a braking system?
It lubricates the moving parts
It cleans the brake components
It transmits force to the brakes
It cools down the brake system
What is the primary purpose of a brake caliper in a disc brake system?
To measure the speed of the vehicle
To house the brake pads and apply pressure to the rotor
To control the hydraulic fluid flow
To enhance the vehicle's aerodynamics
Which type of braking system is most commonly used in modern passenger cars?
Mechanical braking system
Hydraulic braking system
Electromagnetic braking system
Pneumatic braking system
Which principle do brakes use to stop a vehicle?
Magnetism
Friction
Gravity
Electricity
What component in the brake system squeezes the brake pads against the rotor to stop the vehicle?
Brake pedal
Brake caliper
Brake line
Brake fluid
