Free Alaska CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Alaska CDL Air Brake Test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our Alaska CDL practice test questions are based on the Alaska DMV CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try with our CDL practice test to get ready to pass the Alaska CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 AK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AK CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
An air compressor can be cooled by _______.
2.
A low air pressure warning signal is ________.
3.
In case of a low air situation, the spring brakes should come on at:
4.
The main factor in causing brake fade is:
5.
Brake fade is caused by:
6.
What negatively affects the braking power of a spring brake?
7.
When the air system is low ________.
8.
When you need to depress the brakes harder and harder just to maintain the same speed this means ______.
9.
In most newer vehicles, the parking brake control will be:
10.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
11.
When checking the air pressure buildup, pressure should build:
12.
The most common type of foundation brake is?
13.
Brake drums should not have cracks longer than what length?
14.
In a dual air brake system, if the air pressure in one part of the system drops enough to set off the low air warning:
15.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
16.
The air compressor is connected to the engine through ______.
17.
The air tanks must be drained because:
18.
Why should air tanks be drained completely?
19.
Air tanks should be drained:
20.
A warning to drivers behind you that the air brakes have been applied is the:
21.
To prevent too much pressure from building up in the system, what is installed?
22.
The warning light and buzzer will come on when the air pressure in either system drops below what psi?
23.
Water and oil _______.
24.
If your brakes are wet, what should you do to dry them quicker?
25.
What happens when pressure is put on the air brakes?