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