Q.1
How much distance will an air brake-equipped vehicle need to come to a complete stop if it is traveling at 55 mph under ideal driving conditions?
Q.2
Friction in an S-cam brake is caused when the brake shoes and linings:
Q.3
Using the brakes creates heat. If too much heat is produced:
Q.4
If the spring brakes are on, you should:
Q.5
What helps prevent wheel lockup when braking?
Q.6
Why should you regularly drain the air tanks?
Q.7
When stopping in an emergency situation, you should:
Q.8
Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.
Q.9
What should happen before the air pressure in an air brake system tank falls below 55 psi?
Q.10
What is brake lag?
Q.11
Air storage tanks:
Q.12
Once the air tanks are at an air pressure level of 125 psi, the air compressor governor will:
Q.13
Having ABS on only one axle:
Q.14
The ____ are activated by an electric switch that is triggered by the brake pedal.
Q.15
An air compressor governor controls:
Q.16
Air tank drains:
Q.17
Air pressure should build up in a single air system within:
Q.18
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
Q.19
The rods in S-cam brakes move the slack adjusters when air pressure is added to the brake chambers. This air pressure is added to the chambers when the driver:
Q.20
What is often found in compressed air?
Q.21
While operating on a downgrade, you should brake until you reach a speed that is:
Q.22
In a dual air brake system:
Q.23
A wig wag is:
Q.24
When you are about to start down a hill, you should switch into a ____ gear.
Q.25
On flat surfaces, wheel chocks:
0 h : 0 m : 1 s