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