Alabama Air Brakes Practice Test
This is our Alabama Air Brakes Practice Quiz and Practice Test compiled of 25 questions each. Each question is worth four points for a total of 100 possible points. A passing score is 80%.
The Air Brakes Practice Quiz reveals the correct answer during each question to help you study for the actual Air Brakes exam. The Air Brakes Practice Test doesn’t reveal the correct answers until the test is over.
The questions and answers are given in random order each time you retake the test. When you are finished testing, simply click on the “Get Results” button to see your test results. Clicking on the blue “List” button will reveal a list of all the questions you answered correctly and incorrectly. To take the test again, just refresh your browser window. It’s that easy.
Press the start button to begin your free Air Brakes Practice Quiz. Good luck!
Air Brakes CDL Practice Quiz
Question 1 |
A | springs that press the brakes on to stop the vehicle if the air brakes leak out |
B | the spring that is attached to the brake pedal |
C | specialized brakes only to be used during warm weather |
D | used for parking |
Question 2 |
A | Once a week. |
B | Before every trip. |
C | Every 1,000 miles. |
D | Once a day. |
Question 3 |
A | 200 |
B | 175 |
C | 150 |
D | 125 |
Question 4 |
A | The emergency brake system, parking brake system, and foundation brake system. |
B | The service brake system, manual brake system, and disc brake system. |
C | The disc brake system, drum brake system, and foundation brake system. |
D | The parking brake system, service brake system, and emergency brake system. |
Question 5 |
A | Dust and water. |
B | Compressed air does not contain any of these substances. |
C | Water and compressor oil. |
D | Dust and compressor oil. |
Question 6 |
A | When the compressor shuts off between 70 to 90 psi. |
B | When pressure increases from 50 to 75 psi within three minutes. |
C | When the governor switch stops between 75 to 90 psi. |
D | When pressure increases from 85 to 100 psi within 45 seconds. |
Question 7 |
A | You will instantly lose braking power. |
B | Your brakes will instantly lock up. |
C | Nothing will happen. |
D | You will still have some air pressure left in the air tanks. |
Question 8 |
A | service brake, parking brake systems |
B | disc brake, emergency brake systems |
C | service brake, emergency brake systems |
D | disc brake, parking brake systems |
Question 9 |
A | To let you know how much diesel fuel is in the vehicle. |
B | To let you know how much oxygen is in the air tanks. |
C | None of these. |
D | To let you know how much water is in the air tank. |
Question 10 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is known as an official vehicle inspection. |
C | is only on automobiles with hydraulic brakes. |
D | is only found on automobiles with hydraulic brakes. |
Question 11 |
A | all of these. |
B | used to hold the brake shoes and linings. |
C | located on either end of the vehicle's axles. |
D | bolted securely to the wheels. |
Question 12 |
A | safety valve. |
B | governor. |
C | application pressure gauge. |
D | air tank drain. |
Question 13 |
A | evaporate any alcohol, which can damage the brake system |
B | remove oil from the air lines |
C | remove fuel from the air lines |
D | reduce the risk of ice in the air brake valves |
Question 14 |
A | Yes. |
B | Only if they are disc brakes. |
C | No. |
D | Only if they are drum brakes. |
Question 15 |
A | completely empty air out of the tank. |
B | prevent them from freezing during cold temperatures. |
C | drain oil and moisture from the tank. |
D | prevent someone from moving the vehicle. |
Question 16 |
A | two, sixty |
B | three, sixty |
C | one, sixty |
D | one, thirty |
Question 17 |
A | coil, boots |
B | pressure valve, boots |
C | s-cam, shoes |
D | valve spring, shoes |
Question 18 |
A | disc |
B | shoe |
C | wedge |
D | s-cam drum |
Question 19 |
A | Stay calm and wait for the air brakes to come on automatically. |
B | Safely bring the automobile to a stop while you still have control over the brakes. |
C | Pump the brake pedal hard until you come to a stop. |
D | Check your air pressure gauge and drive at highway speeds. |
Question 20 |
A | compressed gas |
B | nitrogen and oxygen |
C | compressed air |
D | oxygen and helium |
Question 21 |
A | All of these. |
B | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
C | There is way too much air in the air compressor. |
D | The air pressure has exceeded 150 psi. |
Question 22 |
A | True |
B | False |
Question 23 |
A | letting up on the brake pedal |
B | activating the parking brake |
C | pushing down on the brake pedal |
D | activating the emergency brake |
Question 24 |
A | When the combined weight of your truckload and vehicle exceeds five tons. |
B | When the temperature is below freezing. |
C | When the brakes are hot. |
D | When the air pressure is low. |
Question 25 |
A | hydraulic brakes |
B | brake system |
C | storage tanks |
D | air tank drains |
← | List | → |
1 | 2 | 3 | 4 | 5 |
6 | 7 | 8 | 9 | 10 |
11 | 12 | 13 | 14 | 15 |
16 | 17 | 18 | 19 | 20 |
21 | 22 | 23 | 24 | 25 |
End |
Remember, the Air Brakes Practice Test doesn’t reveal the correct answers until the test is over. The questions and answers are given in random order each time you retake the test. When you are finished testing, simply click on the “Get Results” button to see your test results. Clicking on the blue “List” button will reveal a list of all the questions you answered correctly and incorrectly. To take the test again, just refresh your browser window.
Press the start button to begin your free Air Brakes Practice Test. Good luck!
Air Brakes CDL Practice Test
Question 1 |
A | When the temperature is below freezing. |
B | When the brakes are hot. |
C | When the combined weight of your truckload and vehicle exceeds five tons. |
D | When the air pressure is low. |
Question 2 |
A | air tank drains |
B | hydraulic brakes |
C | brake system |
D | storage tanks |
Question 3 |
A | True |
B | False |
Question 4 |
A | safety valve. |
B | air tank drain. |
C | governor. |
D | application pressure gauge. |
Question 5 |
A | coil, boots |
B | pressure valve, boots |
C | s-cam, shoes |
D | valve spring, shoes |
Question 6 |
A | activating the emergency brake |
B | activating the parking brake |
C | pushing down on the brake pedal |
D | letting up on the brake pedal |
Question 7 |
A | 125 |
B | 200 |
C | 175 |
D | 150 |
Question 8 |
A | all of these. |
B | bolted securely to the wheels |
C | used to hold the brake shoes and linings. |
D | located on either end of the vehicle's axles. |
Question 9 |
A | Stay calm and wait for the air brakes to come on automatically. |
B | Pump the brake pedal hard until you come to a stop. |
C | Safely bring the automobile to a stop while you still have control over the brakes. |
D | Check your air pressure gauge and drive at highway speeds. |
Question 10 |
A | Only if they are disc brakes. |
B | No. |
C | Yes. |
D | Only if they are drum brakes. |
Question 11 |
A | Water and compressor oil. |
B | Compressed air does not contain any of these substances. |
C | Dust and water. |
D | Dust and compressor oil. |
Question 12 |
A | two, sixty |
B | one, sixty |
C | one, thirty |
D | three, sixty |
Question 13 |
A | shoe |
B | wedge |
C | s-cam drum |
D | disc |
Question 14 |
A | specialized brakes only to be used during warm weather |
B | springs that press the brakes on to stop the vehicle if the air brakes leak out |
C | the spring that is attached to the brake pedal |
D | used for parking |
Question 15 |
A | is only on automobiles with hydraulic brakes. |
B | is known as an official vehicle inspection. |
C | is only found on automobiles with hydraulic brakes. |
D | applies and releases the vehicle's brakes using the brake pedal. |
Question 16 |
A | When the compressor shuts off between 70 to 90 psi. |
B | When pressure increases from 50 to 75 psi within three minutes. |
C | When the governor switch stops between 75 to 90 psi. |
D | When pressure increases from 85 to 100 psi within 45 seconds. |
Question 17 |
A | Nothing will happen. |
B | You will still have some air pressure left in the air tanks. |
C | Your brakes will instantly lock up. |
D | You will instantly lose braking power. |
Question 18 |
A | All of these. |
B | There is way too much air in the air compressor. |
C | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
D | The air pressure has exceeded 150 psi. |
Question 19 |
A | To let you know how much water is in the air tank. |
B | To let you know how much oxygen is in the air tanks. |
C | None of these. |
D | To let you know how much diesel fuel is in the vehicle. |
Question 20 |
A | disc brake, parking brake systems |
B | disc brake, emergency brake systems |
C | service brake, emergency brake systems |
D | service brake, parking brake systems |
Question 21 |
A | nitrogen and oxygen |
B | compressed gas |
C | oxygen and helium |
D | compressed air |
Question 22 |
A | Before every trip. |
B | Once a week. |
C | Every 1,000 miles. |
D | Once a day. |
Question 23 |
A | remove fuel from the air lines |
B | remove oil from the air lines |
C | evaporate any alcohol, which can damage the brake system |
D | reduce the risk of ice in the air brake valves |
Question 24 |
A | prevent them from freezing during cold temperatures. |
B | completely empty air out of the tank. |
C | prevent someone from moving the vehicle. |
D | drain oil and moisture from the tank. |
Question 25 |
A | The emergency brake system, parking brake system, and foundation brake system. |
B | The service brake system, manual brake system, and disc brake system. |
C | The disc brake system, drum brake system, and foundation brake system. |
D | The parking brake system, service brake system, and emergency brake system. |
← | List | → |
1 | 2 | 3 | 4 | 5 |
6 | 7 | 8 | 9 | 10 |
11 | 12 | 13 | 14 | 15 |
16 | 17 | 18 | 19 | 20 |
21 | 22 | 23 | 24 | 25 |
End |
Back to Alabama CDL Practice Test