Deck 1: Brake System Fundamentals

Question 1

Air brakes require at least _____ psi to operate correctly.

A)50
B)150
C)100
D)300

Answer 1

B

Question 2

Which of the following statements about parking brake function is true?

A)The main purpose is to prevent the vehicle from moving after it is stopped.
B)The main purpose is to stop the vehicle while still in motion.
C)The main purpose is to assist in parallel parking the vehicle.
D)All of the above

Answer 2

A

Question 3

As drum brakes evolved, ____________shoe- and-drum brakes became the standard.

A)internal-expanding
B)external-contracting
C)external-band
D)internal-contracting

Answer 3

A

Question 4

Active braking systems can apply the brakes without the driver touching the brake pedal.  This is accomplished by using _____, yaw sensors and actuators.

A)wheel speed sensors
B)steering wheel sensors
C)tire inflation monitors
D)SIR rotation sensors

Question 5

A brake pedal assembly has a 9-inch lever and the master cylinder pushrod is 1.5 inches from the fulcrum. If the driver applies 50 pounds of force to the pedal, how much force will be applied to the master cylinder?

A)150 pounds
B)250 pounds
C)300 pounds
D)350 pounds

Question 6

Most brake pedal installations are an example of what is called a ____-class lever.

A)first
B)second
C)third
D)fourth

Question 7

Electronic braking covers which of the following systems?

A)ABS
B)TCS
C)Both A and B
D)Neither A nor B

Question 8

Technician A says lockup is a condition in which a wheel stops rotating and skids on the road surface. Technician B says that positive wheel spin happens with no traction and the wheel spins but does not move the vehicle. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 9

The major hydraulic components of a typical light vehicle brake system include all of the following EXCEPT :

A)master cylinder
B)wheel cylinders
C)calipers
D)rotors

Question 10

Trailer brakes are being discussed. Technician A says that hydraulic surge brakes are typically used on RV units. Technician B says that electric trailer brakes are typically used on utility and RV units. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 11

Technician A says that modern-day vehicles have split brake systems. Technician B says that all modern-day vehicles use a diagonal split system. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 12

Air brake systems use _____to control the movement of a diaphragm.

A)hydraulic pressure
B)engine vacuum
C)component rotation
D)compressed air

Question 13

The typical mechanical components of a hydraulic brake system include all of the following   EXCEPT:

A)brake pedal
B)master cylinder
C)brake pads
D)brake drums

Question 14

A ________ is used to tell the brake actuator how fast and how far the driver applied the brake pedal.

A)master cylinder
B)fulcrum
C)lever
D)stroke sensor

Question 15

_____ braking systems apply the trailer brakes in case the trailer disconnects from the tow vehicle.

A)Trailer Breakaway
B)Two wheel
C)Four wheel
D)Trailer Anti-lock

Question 16

Boat trailers do not use electric braking because water _____ the life expectation of electric brake components.

A)lengthens
B)shortens
C)does not affect
D)None of the above

Question 17

Technician A says disc brakes are more effective than drum brakes. Technician B says disc brakes require more application pressure than drum brakes. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 18

Which of the following materials is used for brake lines?

A)Steel
B)Rubber
C)Both A and B
D)Neither A nor B

Question 19

Trailer brakes may be of one of two types, _____ or _____.

A)hydraulic surge, mechanical
B)mechanical, electric
C)electric, rods and pulleys
D)hydraulic surge, electric

Question 20

Trailer brakes do not apply when the vehicle is moving in a _____ direction.

A)circular
B)reverse
C)straight line
D)swaying

Question 21

Friction is the use of a lever and fulcrum to create mechanical advantage.

Question 22

Shared components among ABS and TCS are the wheel speed sensors and hydraulic modulator.

Question 23

Parking brakes are used to hold a vehicle stationary after it has been stopped by the service brakes.

Question 24

Active braking systems require driver input to activate the braking of the vehicle.

Question 25

The use of leverage increases force and increases distance by the same factor.

Question 26

Regardless of the type of braking system, mechanical, hydraulic, or electronic, where does the final braking action occur?

Question 27

Flexible brake hoses are needed to allow movement between the brake hydraulic components and the steering / suspension components.

Question 28

All power boosters use hydraulic fluid pressure supplied by the power steering pump to assist in the application of the brakes.

Question 29

A ____________________ is the point at which one lever pivots or sits to apply force to another lever of device. A seesaw would be an example.

Question 30

Define positive wheel spin.

Question 31

Discuss negative wheel slip.

Question 32

Disc brakes require higher hydraulic pressure and greater force to achieve the same stopping power as comparable drum brakes.

Question 33

Explain the definition of an active braking system.

Question 34

Electronic braking systems cover all systems from antilock braking systems and traction control systems to the latest systems including vehicle stability systems.

Question 35

Describe the construction and basic operation of the typical master cylinder.

Question 36

Explain why a parking brake is not viable for stopping a moving vehicle.

Question 37

The brake rotor is attached to the wheel hub.

Question 38

Explain the advantages of a disc brake over a drum brake.

Question 39

Explain why a split braking system is needed and explain the two types of systems in use.

Question 40

Define the term Yaw as it is used in active braking systems.

Question 41

Right-to-Know training is being discussed. Technician A says the location of the MSDS should be covered during training. Technician B says the employer must keep records of all training sessions. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 42

The hydraulic pressure needed to operate the braking system is generated by pistons located within the ____________________.

Question 43

Safety precautions when working on a running engine are being discussed. Technician A says to use wheel blocks to block the front and back of one of the wheels. Technician B says never to get under a car when someone else is working on it or when the engine is running

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 44

Brake cleaning is being discussed. Technician A says the fumes from aerosol cleaners and open part washers are heavier than air and will settle to the lower part of the work area.   Technician B says solvent vapors are not harmful. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 45

A(n)__________ determines the direction and speed at which the vehicle is skidding.

Question 46

Technician A says the shop foreman is responsible for physically cleaning the technicians' work areas. Technician B says employees are responsible for maintaining their work areas and practicing safe work habits. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 47

Technician A says to use safety stands even if a short under-vehicle inspection is the only thing being performed. Technician B says a lift should be used if the jack does not raise the vehicle enough to place the safety stands. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 48

A(n)___________ is the hydraulic cylinder mounted on the backing plate of a drum brake assembly.

Question 49

The ____________ provides brake pedal feedback to the driver.

Question 50

Spray brake cleaners are being discussed. Technician A says use the container label to determine if the cleaner is hazardous. Technician B says the MSDS should be readily available if the cleaner is in fact considered hazardous. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 51

___________ and electronic brake distribution are names for the electronic function of the proportioning valve by the ABS braking system.

Question 52

An ____________________ is a service brake system that modulates hydraulic pressure to one or more wheels as needed to keep those wheels from locking during braking.

Question 53

Technician A says oily rags must be stored in a labeled and sealed metal container. Technician B says water on the shop floor could present an electric shock hazard. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 54

Cleaning the shop's floor is being discussed. Technician A says to flush the waste and dust into a floor drain. Technician B says a wet/dry vacuum cleaner with a HEPA filter is the preferred method. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 55

Disc brake pads are forced against the brake rotor by the ____________________ located in the caliper housing.

Question 56

The ____________________ separates the engine compartment from the passenger compartment.

Question 57

Technician A says the finish on a vehicle could be damaged by brake fluid. Technician B says brake fluid irritates the skin in most instances of direct exposure. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 58

____________________ is the force that resists motion between the surfaces of two objects or forms of matter.

Question 59

________ brakes are only used on heavy-duty trucks.

Question 60

A ____________________ split system allows the operation of either the LF/RR or RF/LR brakes in the event of a fluid leak in the system.

Question 61

Explain how to dispose of brake dust.

Question 62

List the two federal agencies that regulate asbestos in the workplace.

Question 63

Technician A says OSHA regulates exposure and handling of materials that contain asbestos. Technician B says the EPA regulates the storage and disposal of asbestos waste. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 64

Technician A says rings or bracelets may be worn in the shop if electrical repairs are not being performed. Technician B says no jewelry should ever be worn in the shop. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 65

Vehicle operation within the shop is being discussed. Technician A says to never stand in front of or behind an automobile when the engine is running. Technician B says never stand or work under a vehicle when the engine is running. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 66

The primary source of asbestos fiber in the shop would be:

A)lining adhesive.
B)cleaning solvent.
C)brake dust.
D)floor dust.

Question 67

Discuss the information that must be included on a container label.

Question 68

The most appropriate way to prevent eye injuries is:

A)ask a co-worker to do any dangerous procedure for you
B)wear proper eye protection
C)keep your eyes closed during a dangerous procedure
D)look away when performing a dangerous procedure

Question 69

Technician A says that in most areas of the country, it is acceptable to turn over properly contained asbestos residue to local sanitation agencies for burial in a landfill. Technician B says it is the technician's responsibility to know the local regulations regarding asbestos handling and disposal and to ensure they are being observed in the workplace. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 70

While moving a vehicle that requires brake repairs: Technician A says extra caution should be used to prevent damage to the vehicle or shop. Technician B says that extra caution should be used to prevent injury to yourself or others in the area. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 71

Which of the following is a major chemical in a cleaning solvent classified as a chlorinated hydrocarbon?

A)Trichloroethylene
B)Emulsified soap
C)Fluorocarbons
D)Polyglycol

Question 72

Technician A says asbestos may cause a technician to have long-term health problems. Technician B says a typical shop exhaust system is not sufficient for clearing the air of asbestos fibers. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 73

Brake systems are regulated by the Federal Motor Vehicle Safety Standards. These regulations are established and enforced by the:

A)US Department of Transportation
B)OSHA
C)EPA
D)Motor Vehicle Department

Question 74

Any of the following actions may cause chemical poisoning EXCEPT:

A)refraction.
B)ingestion.
C)inhalation.
D)absorption.

Question 75

Several technicians are complaining of headaches and nausea while working in a closed shop. Technician A says the cause may be an odorless, colorless, tasteless gas. Technician B says the cause may be traced to a leak in the shop's exhaust system. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 76

One characteristic that is NOT considered to be a trait of hazardous waste is:

A)emissivity.
B)reactivity.
C)ignitability.
D)corrosivity.

Question 77

Explain the purpose of the MSDS and container label.

Question 78

A technician has collapsed in the shop. Technician A says carbon monoxide may be the cause. Technician B says the shop's exhaust may not be working properly. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 79

Discuss hazards associated with brake (asbestos)dust.

Question 80

Describe how a technician may become chemically poisoned while working in the shop.