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 | There is way too much air in the air compressor. |
B | The air pressure has exceeded 150 psi. |
C | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
D | All of these. |
Question 2 |
A | springs that press the brakes on to stop the vehicle if the air brakes leak out |
B | specialized brakes only to be used during warm weather |
C | used for parking |
D | the spring that is attached to the brake pedal |
Question 3 |
A | letting up on the brake pedal |
B | pushing down on the brake pedal |
C | activating the parking brake |
D | activating the emergency brake |
Question 4 |
A | safety valve. |
B | air tank drain. |
C | governor. |
D | application pressure gauge. |
Question 5 |
A | When the brakes are hot. |
B | When the temperature is below freezing. |
C | When the combined weight of your truckload and vehicle exceeds five tons. |
D | When the air pressure is low. |
Question 6 |
A | No. |
B | Yes. |
C | Only if they are drum brakes. |
D | Only if they are disc brakes. |
Question 7 |
A | service brake, emergency brake systems |
B | disc brake, emergency brake systems |
C | service brake, parking brake systems |
D | disc brake, parking brake systems |
Question 8 |
A | bolted securely to the wheels. |
B | all of these. |
C | located on either end of the vehicle's axles. |
D | used to hold the brake shoes and linings. |
Question 9 |
A | The parking brake system, service brake system, and emergency brake system. |
B | The disc brake system, drum brake system, and foundation brake system. |
C | The emergency brake system, parking brake system, and foundation brake system. |
D | The service brake system, manual brake system, and disc brake system. |
Question 10 |
A | remove oil from the air lines |
B | remove fuel 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 11 |
A | Pump the brake pedal hard until you come to a stop. |
B | Safely bring the automobile to a stop while you still have control over the brakes. |
C | Check your air pressure gauge and drive at highway speeds. |
D | Stay calm and wait for the air brakes to come on automatically. |
Question 12 |
A | compressed air |
B | compressed gas |
C | oxygen and helium |
D | nitrogen and oxygen |
Question 13 |
A | Before every trip. |
B | Once a day. |
C | Once a week. |
D | Every 1,000 miles. |
Question 14 |
A | Dust and compressor oil. |
B | Dust and water. |
C | Compressed air does not contain any of these substances. |
D | Water and compressor oil. |
Question 15 |
A | You will still have some air pressure left in the air tanks. |
B | Nothing will happen. |
C | Your brakes will instantly lock up. |
D | You will instantly lose braking power. |
Question 16 |
A | s-cam drum |
B | disc |
C | shoe |
D | wedge |
Question 17 |
A | prevent someone from moving the vehicle. |
B | prevent them from freezing during cold temperatures. |
C | completely empty air out of the tank. |
D | drain oil and moisture from the tank. |
Question 18 |
A | hydraulic brakes |
B | air tank drains |
C | storage tanks |
D | brake system |
Question 19 |
A | True |
B | False |
Question 20 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is known as an official vehicle inspection. |
C | is only found on automobiles with hydraulic brakes. |
D | is only on automobiles with hydraulic brakes. |
Question 21 |
A | pressure valve, boots |
B | coil, boots |
C | s-cam, shoes |
D | valve spring, shoes |
Question 22 |
A | one, thirty |
B | one, sixty |
C | three, sixty |
D | two, sixty |
Question 23 |
A | None of these. |
B | To let you know how much oxygen is in the air tanks. |
C | To let you know how much diesel fuel is in the vehicle. |
D | To let you know how much water is in the air tank. |
Question 24 |
A | 200 |
B | 150 |
C | 175 |
D | 125 |
Question 25 |
A | When the governor switch stops between 75 to 90 psi. |
B | When pressure increases from 85 to 100 psi within 45 seconds. |
C | When the compressor shuts off between 70 to 90 psi. |
D | When pressure increases from 50 to 75 psi within three minutes. |
← | 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 | drain oil and moisture from the tank. |
B | prevent someone from moving the vehicle. |
C | prevent them from freezing during cold temperatures. |
D | completely empty air out of the tank. |
Question 2 |
A | disc brake, parking brake systems |
B | service brake, emergency brake systems |
C | disc brake, emergency brake systems |
D | service brake, parking brake systems |
Question 3 |
A | There is way too much air in the air compressor. |
B | The air pressure has exceeded 150 psi. |
C | All of these. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 4 |
A | The parking brake system, service brake system, and emergency 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 emergency brake system, parking brake system, and foundation brake system. |
Question 5 |
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 6 |
A | two, sixty |
B | one, sixty |
C | three, sixty |
D | one, thirty |
Question 7 |
A | True |
B | False |
Question 8 |
A | When the brakes are hot. |
B | When the air pressure is low. |
C | When the temperature is below freezing. |
D | When the combined weight of your truckload and vehicle exceeds five tons. |
Question 9 |
A | coil, boots |
B | pressure valve, boots |
C | s-cam, shoes |
D | valve spring, shoes |
Question 10 |
A | safety valve. |
B | application pressure gauge. |
C | air tank drain. |
D | governor. |
Question 11 |
A | 125 |
B | 200 |
C | 175 |
D | 150 |
Question 12 |
A | Before every trip. |
B | Once a week. |
C | Every 1,000 miles. |
D | Once a day. |
Question 13 |
A | remove fuel from the air lines |
B | remove oil from the air lines |
C | reduce the risk of ice in the air brake valves |
D | evaporate any alcohol, which can damage the brake system |
Question 14 |
A | When the compressor shuts off between 70 to 90 psi. |
B | When the governor switch stops between 75 to 90 psi. |
C | When pressure increases from 50 to 75 psi within three minutes. |
D | When pressure increases from 85 to 100 psi within 45 seconds. |
Question 15 |
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 16 |
A | Compressed air does not contain any of these substances. |
B | Dust and compressor oil. |
C | Dust and water. |
D | Water and compressor oil. |
Question 17 |
A | used to hold the brake shoes and linings. |
B | bolted securely to the wheels |
C | located on either end of the vehicle's axles. |
D | all of these. |
Question 18 |
A | Only if they are disc brakes. |
B | Yes. |
C | No. |
D | Only if they are drum brakes. |
Question 19 |
A | shoe |
B | wedge |
C | s-cam drum |
D | disc |
Question 20 |
A | To let you know how much oxygen is in the air tanks. |
B | To let you know how much diesel fuel is in the vehicle. |
C | To let you know how much water is in the air tank. |
D | None of these. |
Question 21 |
A | compressed gas |
B | oxygen and helium |
C | compressed air |
D | nitrogen and oxygen |
Question 22 |
A | air tank drains |
B | hydraulic brakes |
C | brake system |
D | storage tanks |
Question 23 |
A | Safely bring the automobile to a stop while you still have control over the brakes. |
B | Stay calm and wait for the air brakes to come on automatically. |
C | Pump the brake pedal hard until you come to a stop. |
D | Check your air pressure gauge and drive at highway speeds. |
Question 24 |
A | Your brakes will instantly lock up. |
B | You will instantly lose braking power. |
C | Nothing will happen. |
D | You will still have some air pressure left in the air tanks. |
Question 25 |
A | is known as an official vehicle inspection. |
B | applies and releases the vehicle's brakes using the brake pedal. |
C | is only found on automobiles with hydraulic brakes. |
D | is only on automobiles with hydraulic brakes. |
← | 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