Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CDL PERMIT > Air Brakes > Flashcards

Air Brakes Flashcards

1
Q

3 different braking systems:

A

Parking
Service
Emergency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The governor controls ____ air is pumped into storage tanks

A

WHEN

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Storage tanks hold enough air to operate brakes several times before compressor quits working . TRUE or FALSE

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

If a leak should occur in the COMPRESSOR there is a ONE-WAY check valve that prevents leaking from the storage tanks
TRUE or FALSE

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Debris like oil & water are trapped in a Automatic Water Ejector in the 1st tank then pumped into a ____ _____.

A

Wet tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Water in the air system can freeze and cause this to happen____ ____.

A

Brake failure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Alcohol evaporator reduces the risk of ____ building In the air brake system.

A

Ice

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Safety valve is set to open at this psi.

A

120-125

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Brake pedal controls air pressure to the _____brake

A

Service

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Air supply pressure gauge shows how much is available in the_____?____.

A

Air tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When using parking or emergency brakes this type of pressure is used.

A

Spring pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Air brake equipped vehicles must have this braking system just in case air system fails.

A

Hydraulic braking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Application pressure gauge shows driver how much air is being …

A

Applied the the brakes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Warning device shows when air pressure is low in the services air brake when the psi falls below_____

A

60

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What can legally hold a parking or emergency brake in position.

A

Spring brakes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What turns on the electrical stop switch in air brake system

A

Air pressure

17
Q

If truck has dual parking control valve. You can use pressure from separate tank to release ________

A

Release emergency brakes to move a short distance

18
Q

With dual air brake system. If a low air warning prejudge comes on for the SECONDARY SYSTEM you should

A

Stop safely park

Continue ONLY when system is repaired

19
Q

Stop and safely park as soon as the low air pressure warning comes on.
True or False

20
Q

Never disconnect steering axle breaks TRUE or FALSE

21
Q

Stab braking is a technique used during emergency braking. You need to :

A
  1. BRAKE HARD UNTIL WHEELS LOCK

2. LET OFF THE BRAKES WHILE WHEELS ARE LOCKED.

22
Q

Emergency brake is held on by SPRING AIR PRESSURE

True or False

23
Q

How to check the free- play on manual slack adjuster

A
  1. Park on level ground, chock wheels
  2. Release parking brakes
  3. Pull slack adjuster

•CAN NOT HAVE ANYMORE 1/2”-3/4 “ free play

24
Q

Air leakage release rate for COMBO engine OFF, brakes released. Air syst. should not loose more than ____ psi per minute :

25
Straight truck ENGINE OFF-BRAKES RELEASED air brake system should not leak more than ____ psi per minute
2
26
Air of s straight vehicle ENGINE OFF. BRAKES ON!!! Should not leak more than ___ psi per minute.
3
27
Test parking brake while your
Parked
28
When you fan your brakes it doesn't allow for cooling TRUE or FALSE
True
29
Hydraulic braking takes longer because of flow time TRUE or FALSE
True
30
______ _______ _____ makes the total stopping distance for air brakes longer than hydraulic brakes.
Brake lag distance
31
Warning will show when air pressure falls below
60 psi
32
Safety relief valve opens at ____ psi
150
33
When some air brake systems are doing more work than others the brakes will develop more heat , fade & vehicle handling will be affected. TRUE OR false.
True
34
True if false . Your safety release valve needs immediate attention when relief valve has opens several times.
True
35
Test compressor on dual air brakes systems by letting pressure build up between ____& ____.
85-100
36
Spring brakes are held on by ____& ____.
Electrical & hydraulic
37
Nth is can cause ALL AIR BRAKES to have less power
Out of adjustment
38
Air brakes use ______air
Compressed

CDL PERMIT (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions