2026 Nebraska DMV Air Brakes Class A Test 2 (25 Questions And Complete Answers)
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Terms in this set
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A low air pressure warning signal:
1. Is not recommended on vehicles with air brakes.
2. Is required on vehicles with air brakes.
3. Is optional on vehicles with air brakes.
1. Is not recommended on vehicles with air brakes.
2. Is required on vehicles with air brakes.
3. Is optional on vehicles with air brakes.
Is required on vehicles with air brakes.
Air brakes use ____ to function.
1. Compressed air
2. Liquid nitrogen
3. Carbon dioxide
1. Compressed air
2. Liquid nitrogen
3. Carbon dioxide
Compressed air
3 While driving downhill, you should brake until you reach a speed that is ____ below your safe speed, then release the brake pedal.
1. 5 mph
2. 10 mph
3. 15 mph
4. 20 mph
1. 5 mph
2. 10 mph
3. 15 mph
4. 20 mph
5 mph
During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?''
1. 3 psi in one minute.
2. 6 psi in one minute.
3. 8 psi in one minute.
1. 3 psi in one minute.
2. 6 psi in one minute.
3. 8 psi in one minute.
3 psi in one minute.
You should ____ if the low pressure warning signal activates while you are driving.
1. Apply the brakes as hard as possible without locking the wheels.
2. Apply the brakes with about half of your usual force.
3. Apply the brakes so the wheels lock.
4. Apply the brakes with minimal pressure.
1. Apply the brakes as hard as possible without locking the wheels.
2. Apply the brakes with about half of your usual force.
3. Apply the brakes so the wheels lock.
4. Apply the brakes with minimal pressure.
Apply the brakes as hard as possible without locking the wheels.
When using the controlled braking method in an emergency situation, you should:
1. Apply the brakes as hard as possible without locking the wheels.
2. Apply the brakes with about half of your usual force.
3. Apply the brakes so the wheels lock.
4. Apply the brakes with minimal pressure.
1. Apply the brakes as hard as possible without locking the wheels.
2. Apply the brakes with about half of your usual force.
3. Apply the brakes so the wheels lock.
4. Apply the brakes with minimal pressure.
Apply the brakes as hard as possible without locking the wheels.
If air pressure drops to a level between ____, a visual low pressure warning signal should have already activated.
1. 55 and 75 psi.
2. 80 and 95 psi.
3. 65 and 100 psi.
1. 55 and 75 psi.
2. 80 and 95 psi.
3. 65 and 100 psi.
55 and 75 psi.
If your tractor is equipped with ABS but your trailer is not, the ABS:
1. Will not be effective.
2. Will still improve your steering control.
3. Will make jackknifing easier.
4. Will allow others to see when you brake.
1. Will not be effective.
2. Will still improve your steering control.
3. Will make jackknifing easier.
4. Will allow others to see when you brake.
Will still improve your steering control.
What should happen before the air pressure in an air brake system tank falls below 55 psi?''
1. The warning light should activate.
2. The vehicle will be unable to shift out of gear.
3. The front lights should flash.
1. The warning light should activate.
2. The vehicle will be unable to shift out of gear.
3. The front lights should flash.
The warning light should activate.
An air compressor governor will stop the compressor from pumping air once the air tanks have an air pressure level of:''
1. 125 psi.
2. 100 psi.
3. 150 psi.
4. 80 psi.
1. 125 psi.
2. 100 psi.
3. 150 psi.
4. 80 psi.
125 psi.
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