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