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 | pressure valve, boots |
B | s-cam, shoes |
C | valve spring, shoes |
D | coil, boots |
Question 2 |
A | application pressure gauge. |
B | safety valve. |
C | air tank drain. |
D | governor. |
Question 3 |
A | remove oil from the air lines |
B | reduce the risk of ice in the air brake valves |
C | remove fuel from the air lines |
D | evaporate any alcohol, which can damage the brake system |
Question 4 |
A | The disc brake system, drum brake system, and foundation brake system. |
B | The emergency brake system, parking brake system, and foundation brake system. |
C | The service brake system, manual brake system, and disc brake system. |
D | The parking brake system, service brake system, and emergency brake system. |
Question 5 |
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 85 to 100 psi within 45 seconds. |
D | When pressure increases from 50 to 75 psi within three minutes. |
Question 6 |
A | Every 1,000 miles. |
B | Once a week. |
C | Before every trip. |
D | Once a day. |
Question 7 |
A | When the brakes are hot. |
B | When the combined weight of your truckload and vehicle exceeds five tons. |
C | When the air pressure is low. |
D | When the temperature is below freezing. |
Question 8 |
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 9 |
A | There is way too much air in the air compressor. |
B | All of these. |
C | The air pressure has exceeded 150 psi. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 10 |
A | letting up on the brake pedal |
B | activating the parking brake |
C | activating the emergency brake |
D | pushing down on the brake pedal |
Question 11 |
A | You will instantly lose braking power. |
B | You will still have some air pressure left in the air tanks. |
C | Nothing will happen. |
D | Your brakes will instantly lock up. |
Question 12 |
A | is known as an official vehicle inspection. |
B | is only on automobiles with hydraulic brakes. |
C | is only found on automobiles with hydraulic brakes. |
D | applies and releases the vehicle's brakes using the brake pedal. |
Question 13 |
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 14 |
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 15 |
A | disc |
B | shoe |
C | s-cam drum |
D | wedge |
Question 16 |
A | air tank drains |
B | storage tanks |
C | brake system |
D | hydraulic brakes |
Question 17 |
A | one, thirty |
B | two, sixty |
C | three, sixty |
D | one, sixty |
Question 18 |
A | 150 |
B | 125 |
C | 200 |
D | 175 |
Question 19 |
A | completely empty air out of the tank. |
B | prevent them from freezing during cold temperatures. |
C | prevent someone from moving the vehicle. |
D | drain oil and moisture from the tank. |
Question 20 |
A | located on either end of the vehicle's axles. |
B | used to hold the brake shoes and linings. |
C | bolted securely to the wheels. |
D | all of these. |
Question 21 |
A | oxygen and helium |
B | compressed gas |
C | compressed air |
D | nitrogen and oxygen |
Question 22 |
A | True |
B | False |
Question 23 |
A | disc brake, emergency brake systems |
B | service brake, parking brake systems |
C | service brake, emergency brake systems |
D | disc brake, parking brake systems |
Question 24 |
A | Yes. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | No. |
Question 25 |
A | Compressed air does not contain any of these substances. |
B | Dust and compressor oil. |
C | Water and compressor oil. |
D | Dust and water. |
← | 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 | s-cam, shoes |
B | valve spring, shoes |
C | coil, boots |
D | pressure valve, boots |
Question 2 |
A | evaporate any alcohol, which can damage the brake system |
B | reduce the risk of ice in the air brake valves |
C | remove oil from the air lines |
D | remove fuel from the air lines |
Question 3 |
A | Once a day. |
B | Every 1,000 miles. |
C | Before every trip. |
D | Once a week. |
Question 4 |
A | bolted securely to the wheels |
B | used to hold the brake shoes and linings. |
C | located on either end of the vehicle's axles. |
D | all of these. |
Question 5 |
A | Stay calm and wait for the air brakes to come on automatically. |
B | Check your air pressure gauge and drive at highway speeds. |
C | Pump the brake pedal hard until you come to a stop. |
D | Safely bring the automobile to a stop while you still have control over the brakes. |
Question 6 |
A | Dust and water. |
B | Dust and compressor oil. |
C | Water and compressor oil. |
D | Compressed air does not contain any of these substances. |
Question 7 |
A | one, thirty |
B | one, sixty |
C | three, sixty |
D | two, sixty |
Question 8 |
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 9 |
A | hydraulic brakes |
B | air tank drains |
C | storage tanks |
D | brake system |
Question 10 |
A | wedge |
B | shoe |
C | disc |
D | s-cam drum |
Question 11 |
A | disc brake, emergency brake systems |
B | service brake, parking brake systems |
C | service brake, emergency brake systems |
D | disc brake, parking brake systems |
Question 12 |
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 | used for parking |
D | specialized brakes only to be used during warm weather |
Question 13 |
A | 175 |
B | 200 |
C | 125 |
D | 150 |
Question 14 |
A | is only found on automobiles with hydraulic brakes. |
B | is only on automobiles with hydraulic brakes. |
C | is known as an official vehicle inspection. |
D | applies and releases the vehicle's brakes using the brake pedal. |
Question 15 |
A | activating the parking brake |
B | letting up on the brake pedal |
C | pushing down on the brake pedal |
D | activating the emergency brake |
Question 16 |
A | The disc brake system, drum brake system, and foundation brake system. |
B | The parking brake system, service brake system, and emergency brake system. |
C | The service brake system, manual brake system, and disc brake system. |
D | The emergency brake system, parking brake system, and foundation brake system. |
Question 17 |
A | True |
B | False |
Question 18 |
A | application pressure gauge. |
B | air tank drain. |
C | governor. |
D | safety valve. |
Question 19 |
A | Yes. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | No. |
Question 20 |
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 21 |
A | When the compressor shuts off between 70 to 90 psi. |
B | When pressure increases from 85 to 100 psi within 45 seconds. |
C | When the governor switch stops between 75 to 90 psi. |
D | When pressure increases from 50 to 75 psi within three minutes. |
Question 22 |
A | oxygen and helium |
B | compressed air |
C | compressed gas |
D | nitrogen and oxygen |
Question 23 |
A | The air pressure has exceeded 150 psi. |
B | There is way too much air in the air compressor. |
C | All of these. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 24 |
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 25 |
A | Nothing will happen. |
B | You will instantly lose braking power. |
C | You will still have some air pressure left in the air tanks. |
D | Your brakes will instantly lock up. |
← | 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