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