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Air Brake #2 Flashcards | StudBud
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Air Brake #2
Air Brake #2
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21 cards
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Questions
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Answers
1
brake effect that causes friction to rotate the brake shoe into the drum with more force
coefficient of friction
self-energizing
roto-chamber
2
what is the typical cause when a customer complains of sluggish application or release of brake
governor
service brake chamber
safety valve
3
What is a cause of brake shoe contamination?
Oil Filter is lose
Jake-Brake Adjustment is off
Rainy Day
Leaking Wheel Seal
4
Why is a sliding or 'floating' Caliper more commonly used on modern disc brakes?
It generates a self servo action
It is lighter and less complicated
It is cheaper and easier to cool
It generates more braking effort
5
how often should the tanks on a typical heavy truck be drained
weekly
monthly
daily
6
What is the main advantage of disc brakes?
They are easier to cool
They are a lot cheaper
They are easier to use as a handbrake
They create more effort
7
what valve is used to reduce brake pressure to the rear wheels when the load is reduced
combination valve
proportioning valve
metering valve
8
What is the main disadvantage of drum brakes?
The don't work in reverse
They created too much brake force
They Overheat easily
They can't be used to operate a handbrake
9
What is a basic type of brake foundation configuration?
Slant Pads
Your Mom
Cam-Brakes
Needle Rollers
10
which of the following is not a typical cause of brake pulling
normal brake wear
mismatched linings or drums
glazed lining and drums
11
What do drum brakes use to create friction against the drum?
Brake plates
Brake Shoes
Brake Pads
Wooden Blocks
12
Wheel speed sensors do not contribute to the ABS..
False
True
13
Why do some brake pads have slots cut in them?
to stop them juddering
To aid cooling
To stop them sticking on in the wet
To make them generate more force
14
which item produces "air" for the air systems?
relay valve
flux capacitor
wheel chock
compressor
15
what is the slang term for the hand operated trailer brake
whammy bar
johnny bar
braker bar
16
Brakes convert movement (kinetic) energy into to what in order to work?
Chemical energy
Radiation
Heat energy
Fluid energy
17
the size or surface area of a brake chamber multiplied by the length of the slack adjuster
edge code
AL factor
brake torque
18
Which of the statements about brake systems used on heavy-duty trucks is NOT true?
d). Some Class 7 trucks have air over hydraulic brakes
a). Class 8 trucks use air brake systems
c). Disc brakes are not used on Class 8 trucks
b). Current production trucks are equipped with ABS
19
what does an air dryer do?
dries your air
dries the air
dries your aire
dries your hair
20
Which ASE certification test qualifies truck technicians to work on air brake systems?
d). T5
a). T1
c). T4
b). T3
21
EBS consists of two sub systems
Anti Lock Brakes and Electro Pneumatic Brakes
Anti Lock Brakes and Economic Pneumatic Brakes
Anti Lock Brakes and Engine Pneumatic Brakes
Anti Load Brakes and Electro Pneumatic Brakes
