2026 Kentucky DMV Air Brakes Class B Test 2 (25 Questions And Complete Answers)
1 / 25
Terms in this set
25
Braking mechanisms are located inside:
1. The fifth wheel.
2. A brake drum.
3. The landing gear.
1. The fifth wheel.
2. A brake drum.
3. The landing gear.
A brake drum.
What is brake lag?
1. The time required for the brakes to work after the brake pedal is pressed
2. The distance between the brake pedal and the floor
3. The amount of air pressure used to stop the vehicle
1. The time required for the brakes to work after the brake pedal is pressed
2. The distance between the brake pedal and the floor
3. The amount of air pressure used to stop the vehicle
The time required for the brakes to work after the brake pedal is pressed
When you are about to start down a hill, you should switch into a ____ gear.
1. Higher
2. Faster
3. Lower
1. Higher
2. Faster
3. Lower
Lower
If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
1. Test the brakes while driving, but continue driving if nothing seems wrong.
2. Immediately stop driving.
3. Drive with the hazard lights activated.
1. Test the brakes while driving, but continue driving if nothing seems wrong.
2. Immediately stop driving.
3. Drive with the hazard lights activated.
Immediately stop driving.
5 To make a stop in a vehicle equipped with air brakes, the driver should:
1. Press the brake pedal down.
2. Lift the brake pedal up.
3. Pull out the air brake knob.
1. Press the brake pedal down.
2. Lift the brake pedal up.
3. Pull out the air brake knob.
Press the brake pedal down.
In a dual air brake system:
1. Air tanks are shared between both systems.
2. Each system has its own air tanks.
3. You must designate which system you are using.
1. Air tanks are shared between both systems.
2. Each system has its own air tanks.
3. You must designate which system you are using.
Each system has its own air tanks.
What color light indicates a vehicle's ABS is not working?
1. Green
2. Blue
3. Yellow
1. Green
2. Blue
3. Yellow
Yellow
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:
1. Presses the brake pedal.
2. Uses the emergency brake.
3. Uses the trailer hand valve.
1. Presses the brake pedal.
2. Uses the emergency brake.
3. Uses the trailer hand valve.
Presses the brake pedal.
Truck tractors with air brakes built on or after March 1, 1997 must have:
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. A GPS.
1. An Anti-Lock Braking System (ABS).
2. Bluetooth.
3. A GPS.
An Anti-Lock Braking System (ABS).
What does an air compressor do in an air brake system?
1. It pumps air into the air storage tanks.
2. It fills the tires.
3. It moves air to the back of the truck.
1. It pumps air into the air storage tanks.
2. It fills the tires.
3. It moves air to the back of the truck.
It pumps air into the air storage tanks.
Showing the first 10 terms. Use the flashcard player above to study all 25 terms!