2026 Maryland DMV Air Brakes Class B Test 2 (25 Questions And Complete Answers)
1 / 25
Terms in this set
25
When parking, you should not use the parking brake if:
1. The brakes are very hot.
2. The brakes are very cold.
3. There is snow on the ground.
1. The brakes are very hot.
2. The brakes are very cold.
3. There is snow on the ground.
The brakes are very hot.
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
6 psi in a minute.
To stop in a vehicle that uses air brakes, the driver should:
1. Pull the air brake lever.
2. Engage the brake lever.
3. Push the brake pedal down.
4. Pull the brake pedal up.
1. Pull the air brake lever.
2. Engage the brake lever.
3. Push the brake pedal down.
4. Pull the brake pedal up.
Push the brake pedal down.
What does the air compressor governor do'?
1. Controls when the air compressor pumps air into the air storage tanks.
2. Controls how quickly air leaves the air storage tanks.
3. Controls the temperature of the air entering the air storage tanks.
4. Controls the temperature of the air leaving the air storage tanks.
1. Controls when the air compressor pumps air into the air storage tanks.
2. Controls how quickly air leaves the air storage tanks.
3. Controls the temperature of the air entering the air storage tanks.
4. Controls the temperature of the air leaving the air storage tanks.
Controls when the air compressor pumps air into the air storage tanks.
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.
When parked on a flat surface, you should:
1. Use wheel chocks to prevent your vehicle from moving.
2. Not use wheel chocks.
3. Use wheel chocks, but only if you have applied the parking brake.
1. Use wheel chocks to prevent your vehicle from moving.
2. Not use wheel chocks.
3. Use wheel chocks, but only if you have applied the parking brake.
Use wheel chocks to prevent your vehicle from moving.
What is removed when an air tank is drained?
1. Water and oil
2. Ammonia
3. Wood
4. Chlorine
1. Water and oil
2. Ammonia
3. Wood
4. Chlorine
Water and oil
In a dual air brake system, air pressure should build from 85 to 100 psi within ____ seconds.
1. 25
2. 10
3. 45
1. 25
2. 10
3. 45
45
What must be on an air tank in an air-braked vehicle?
1. A check valve
2. A lock
3. A trap door
4. An oxidizer
1. A check valve
2. A lock
3. A trap door
4. An oxidizer
A check valve
What should happen if the air pressure in the air brake system tanks falls below 60 psi?
1. A warning light should come on.
2. Lights should flash on the outside of the vehicle.
3. A message should appear on the control panel.
4. The vehicle should stop.
1. A warning light should come on.
2. Lights should flash on the outside of the vehicle.
3. A message should appear on the control panel.
4. The vehicle should stop.
A warning light should come on.
Showing the first 10 terms. Use the flashcard player above to study all 25 terms!