
Air Brakes 2
Authored by Robert McCann
Other
Professional Development
Used 24+ times

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26 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On large, heavy vehicles, the parking or emergency brakes must be held on by something that cannot leak away, such as
Air pressure.
Spring pressure.
Hydraulic pressure.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The air compressor governor controls
When air is pumped into the air storage tanks.
The air pressure applied to the brakes.
The speed of the air compressor.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Your vehicle has a dual air brake system. If a low air pressure warning comes on for just one of the two systems, what should you do?
Stop and park safely. Continue only after the system has been fixed.
Reduce your speed and drive to the nearest garage for repairs.
Reduce your speed and test the remaining system while you’re driving.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The safety valve is set to automatically reduce pressure at
150 psi
50 psi
100 psi
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the supply pressure gauge used for?
To show how much pressure is in the air tanks.
To show how much pressure is going to the brake chambers.
Show how much pressure you have used in this trip.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The braking system that applies the brakes when the driver presses the brake pedal is the_____ brake system.
Emergency
Parking
Service
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
With S-cam drum brakes, when the brake chamber fills with air, air pressure pushes the pushrod out, moving the _____ and thus rotating the _____
Brake camshaft; tie rod
Slack adjuster; tie rod
Slack adjuster; brake camshaft
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