Notes

Protective breathing devices are being discussed. Tech A states that a person should use a disposable dust mask when grinding off rust or when working is dusty conditions. Tech B states that a person should use a respirator when painting. Who is correct?
Tech A


Tech B


Correct!
Both A and B
Correct



Neither A nor B





Question 2
1 / 1 pts
Tech A says ear protection should be worn when sound levels exceed 100 decibels. Tech B says if you have to raise your voice to be heard by a person who is 5' away from you, then the sound level is about 85 decibels or more. Who is correct?
Tech A


Tech B


Both Techs A and B


Correct!
Neither Tech A nor B
Correct






Question 3
1 / 1 pts
Tech A states that in a brake-by-wire system, the computer detects a panic stop if the driver quickly releases the accelerator. Tech B states that brake-by-wire systems are not efficient in detecting panic stops. Who is correct?
Correct!
Tech A
Correct



Tech B


Both A and B


Neither A nor B





Question 4
1 / 1 pts
If you have to raise your voice to be heard by a person who is ____ away from you, then the sound level is about 85 decibels or more.
1'


Correct!
2'
Correct



3'


4'





Question 5
1 / 1 pts
Tech A states that the scrub braking system worked well in rubber tires. Tech B states that the scrub braking system worked reasonably well on dry wheel surfaces made of wood or steel. Who is correct?
Tech A


Correct!
Tech B
Correct



Both A and B


Neither A nor B





Question 6
1 / 1 pts
Scrub brakes are an example of a simple _________ system.
pneumatic


hydraulic


Correct!
mechanical
Correct



electrical





Question 7
1 / 1 pts
All of the following can cause brake system dragging, EXCEPT:
stuck caliper piston.


misadjusted master cylinder pushrod length.


restricted brake line or hose.


Correct!
internal master cylinder leak.
Correct






Question 8
1 / 1 pts
Ear protection comes in two forms: One type covers the entire outer ear, and the other is fitted into the ear canal.
Correct!
True


False





Question 9
1 / 1 pts
Tech A states that for a respiratory mask to be completely effective, it must cover your ears and nose completely. Tech B states that the kind of filter used in the respiratory mask depends on the chemical present in the atmosphere. Who is correct?
Tech A


Correct!
Tech B
Correct



Both A and B


Neither A nor B





Question 10
1 / 1 pts
Tech A states that too much brake force can cause the tire to lose traction and skid. Tech B states that ABS systems have helped to reduce the number of vehicle accidents each year. Who is correct?
Tech A


Tech B


Correct!
Both A and B
Correct



Neither A nor B





Question 11
1 / 1 pts
How many brake shoes did the early drum brake system consist off?
One


Correct!
Two
Correct



Three


Four





Question 12
1 / 1 pts
Over time, the mechanical drum brake system gave way to the modern ________ brake system because of its ability to automatically equalize braking forces at each wheel.
scrub


Correct!
hydraulic drum
Correct



band


ceramic band





Question 13
0 / 1 pts
Tech A says that as of 1996, all vehicles must have a center high-mount stop lamp (CHMSL) to reduce incidence of rear-end collisions. Tech B says that as of 1986, all vehicles must have a center high-mount stop lamp (CHMSL) to reduce incidence of rear-end collisions. Who is correct?
You Answered
Tech A
Incorrect



Correct Answer
Tech B


Both Techs A and B


Neither Tech A nor B





Question 14
1 / 1 pts
Technician A says ear protection should be worn when sound levels exceed 100 decibels. Technician B says if you have to raise your voice to be heard by a person who is 5 feet away from you, then the sound level is about 85 decibels or more. Who is correct?
Technician A


Technician B


Both Technician A and Technician B


Correct!
Neither Technician A nor Technician B
Correct






Question 15
1 / 1 pts
Tech A states that giving greater control of the braking system to the computer increases driving safety. Tech B states that a brake pedal emulator tells the computer how firmly the driver intends to brake. Who is correct?
Tech A


Tech B


Correct!
Both A and B
Correct



Neither A nor B





Question 16
1 / 1 pts
Tech A says that dust masks should be used when painting. Tech B says that a respirator should be used when chemicals are present in the atmosphere. Who is correct?
Tech A


Correct!
Tech B
Correct



Both A and B


Neither A nor B





Question 17
0 / 1 pts
__________________ are a simple mechanical system that use leverage to force a friction block against one or more wheels.
Band brakes


Correct Answer
Scrub brakes


You Answered
Drum brakes
Incorrect



Disc brakes





Question 18
0 / 1 pts
Tech A states that friction brakes lose energy as heat. Tech B states that a brake-by-wire system converts this energy into useful work. Who is correct?
Correct Answer
Tech A


Tech B


You Answered
Both A and B
Incorrect



Neither A nor B





Question 19
1 / 1 pts
Tech A says a disposable dust mask should be used if chemicals, such as paint solvents, are present in the atmosphere. Tech B says a disposable dust mask is made from paper with a wire-reinforced edge that is held to your face with an elastic strip. Who is correct?
Tech A


Correct!
Tech B
Correct



Both Techs A and B


Neither Tech A nor B





Question 20
1 / 1 pts
Technician A says your skin prevents chemicals from entering your body. Technician B says to wear ear protection if the sound level is 85 decibels or above. Who is correct?
Technician A


Correct!
Technician B
Correct



Both Technician A and Technician B


Neither Technician A nor Technician B



Which tool is used to measure the thickness of a brake rotor?
Dial indicator


Vernier caliper


Correct!
Disc brake rotor micrometer
Correct



Depth micrometer





Question 2
1 / 1 pts
When installing lug nuts, the weight should be off the vehicle.
Correct!
TRUE
Correct



FALSE





Question 3
1 / 1 pts
Brake diagnosis usually starts with understanding the customer's:
Correct!
concern.
Correct



cause.


position.


own diagnosis.





Question 4
0 / 1 pts
One safe way to test whether a braking problem is at the front or rear brakes is to drive at a low speed and:
repeatedly tap the service brakes.


pull hard on the parking brake lever.


Correct Answer
lightly apply the parking brake.


You Answered
lightly apply the service brakes.
Incorrect






Question 5
1 / 1 pts
True or False. Pinching off the flexible brake hoses with vice grip pliers is a recommended method of closing rubber brake lines.
True


Correct!
False





Question 6
0 / 1 pts
What is an edge code ?
Correct Answer
A code printed on the edge of a friction lining that describes its coefficient of friction


You Answered
A code stamped on the edge of a rotor indicating its allowable wear limit
Incorrect



A code printed on the back of a brake pad indicating which edge faces forward


A code stamped on the edge of a brake pad indicating its allowable wear limitation





Question 7
1 / 1 pts
Technician A says that some manufacturers provide a means of notifying the driver that the brake pad linings are worn to their minimum limits. Technician B says that manufacturers are required to equip their vehicles with an electronic brake lining wear sensor to warn the driver of worn brakes. Who is correct?
Technician B


Neither Technician A nor Technician


Correct!
Technician A
Correct



Both Technician A and Technician B





Question 8
0 / 1 pts
All of the following are disadvantages of disc brake systems, EXCEPT:
squeals.


You Answered
rotor warpage.
Incorrect



squeaks.


Correct Answer
water dissipation.





Question 9
1 / 1 pts
In a disc brake system, the dust shields help control which of the following?
Correct!
All of the above
Correct



Water


Road debris


Dust





Question 10
1 / 1 pts
Tech A says that using gasoline is an approved method of cleaning brake system components. Tech B says that using kerosene is an approved method of cleaning brake system components. Who is correct?
Tech A


Correct!
Neither Tech A nor B
Correct



Tech B


Both Techs A and B





Question 11
1 / 1 pts
Technician A states that disc brake rotors can be of the hub-style. Technician B states that disc brake rotors can be of the hubless-style. Who is correct?
Technician B


Neither Technician A nor Technician B


Correct!
Both Technician A and Technician B
Correct



Technician A





Question 12
1 / 1 pts
All of the following are types of disc brake calipers, EXCEPT:
Correct!
rotating caliper.
Correct



floating caliper.


fixed caliper.


sliding caliper.





Question 13
1 / 1 pts
Technician A says that you should clean the caliper mountings and slides/pins using equipment/procedures for dealing with asbestos/hazardous dust. Technician B says that once the dust is taken care of, you may need to use a brake cleaning solvent to clean the components further. Who is correct?
Correct!
Both Technician A and Technician B
Correct



Technician A


Neither Technician A nor Technician B


Technician B





Question 14
0 / 1 pts
Brake pads may use any of the following to help minimize brake squeal, EXCEPT:
guides.


You Answered
bendable tangs.
Incorrect



shims.


Correct Answer
grease.





Question 15
1 / 1 pts
After installation, brake linings or pads should be burnished, or bedded, to do all of the following EXCEPT:
cook off resins that bind the friction material to the pads.


transfer pad material evenly onto the rotor.


Correct!
cause the pads to wear-in on uneven rotors.
Correct



ensure long, quiet brake life.





Question 16
0 / 1 pts
Another name for lateral runout is:
You Answered
wobbling.
Incorrect



grooving.


Correct Answer
warpage.


end play.





Question 17
1 / 1 pts
Which of the following is a method to control brake asbestos?
HEPA brake dust vacuum system


None of the above


Aqueous brake wash station


Correct!
Both A and B
Correct






Question 18
1 / 1 pts
Tech A says that a micrometer is used to measure rotor thickness variation. Tech B says that a micrometer is used to measure rotor lateral runout. Who is correct?
Neither A nor B


Tech B


Correct!
Tech A
Correct



Both A and B





Question 19
1 / 1 pts
To perform a thorough inspection of brake pads, you should do all of the following EXCEPT:
inspect all pads, retaining hardware, and anti-noise shims.


Correct!
measure the pad-to-caliper piston clearance.
Correct



measure the remaining brake pad thickness and compare to specifications.


inspect the pads to see if they are wearing evenly.





Question 20
1 / 1 pts
Brake dust is best removed from brake components on the vehicle by using:
a damp rag.


Correct!
a brake wash station.
Correct



compressed air.


brake solvent.