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 | disc |
B | shoe |
C | wedge |
D | s-cam drum |
Question 2 |
A | When pressure increases from 50 to 75 psi within three minutes. |
B | When pressure increases from 85 to 100 psi within 45 seconds. |
C | When the compressor shuts off between 70 to 90 psi. |
D | When the governor switch stops between 75 to 90 psi. |
Question 3 |
A | When the combined weight of your truckload and vehicle exceeds five tons. |
B | When the brakes are hot. |
C | When the air pressure is low. |
D | When the temperature is below freezing. |
Question 4 |
A | one, thirty |
B | one, sixty |
C | three, sixty |
D | two, sixty |
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 | 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 | service brake, emergency brake systems |
B | service brake, parking brake systems |
C | disc brake, parking brake systems |
D | disc brake, emergency brake systems |
Question 7 |
A | governor. |
B | air tank drain. |
C | application pressure gauge. |
D | safety valve. |
Question 8 |
A | 125 |
B | 200 |
C | 175 |
D | 150 |
Question 9 |
A | used to hold the brake shoes and linings. |
B | located on either end of the vehicle's axles. |
C | all of these. |
D | bolted securely to the wheels. |
Question 10 |
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 11 |
A | To let you know how much diesel fuel is in the vehicle. |
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 | None of these. |
Question 12 |
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 13 |
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 14 |
A | the spring that is attached to the brake pedal |
B | specialized brakes only to be used during warm weather |
C | used for parking |
D | springs that press the brakes on to stop the vehicle if the air brakes leak out |
Question 15 |
A | Dust and compressor oil. |
B | Dust and water. |
C | Water and compressor oil. |
D | Compressed air does not contain any of these substances. |
Question 16 |
A | compressed air |
B | compressed gas |
C | oxygen and helium |
D | nitrogen and oxygen |
Question 17 |
A | Once a week. |
B | Every 1,000 miles. |
C | Before every trip. |
D | Once a day. |
Question 18 |
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 19 |
A | False |
B | True |
Question 20 |
A | The parking brake system, service brake system, and emergency 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 emergency brake system, parking brake system, and foundation brake system. |
Question 21 |
A | completely empty air out of the tank. |
B | drain oil and moisture from the tank. |
C | prevent someone from moving the vehicle. |
D | prevent them from freezing during cold temperatures. |
Question 22 |
A | coil, boots |
B | s-cam, shoes |
C | valve spring, shoes |
D | pressure valve, boots |
Question 23 |
A | Yes. |
B | Only if they are disc brakes. |
C | No. |
D | Only if they are drum brakes. |
Question 24 |
A | There is way too much air in the air compressor. |
B | All of these. |
C | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
D | The air pressure has exceeded 150 psi. |
Question 25 |
A | hydraulic brakes |
B | air tank drains |
C | storage tanks |
D | brake system |
← | 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 | Compressed air does not contain any of these substances. |
B | Dust and compressor oil. |
C | Dust and water. |
D | Water and compressor oil. |
Question 2 |
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 3 |
A | is known as an official vehicle inspection. |
B | applies and releases the vehicle's brakes using the brake pedal. |
C | is only found on automobiles with hydraulic brakes. |
D | is only on automobiles with hydraulic brakes. |
Question 4 |
A | oxygen and helium |
B | nitrogen and oxygen |
C | compressed gas |
D | compressed air |
Question 5 |
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 6 |
A | s-cam drum |
B | wedge |
C | disc |
D | shoe |
Question 7 |
A | Once a day. |
B | Before every trip. |
C | Once a week. |
D | Every 1,000 miles. |
Question 8 |
A | three, sixty |
B | two, sixty |
C | one, thirty |
D | one, sixty |
Question 9 |
A | When pressure increases from 85 to 100 psi within 45 seconds. |
B | When the compressor shuts off between 70 to 90 psi. |
C | When pressure increases from 50 to 75 psi within three minutes. |
D | When the governor switch stops between 75 to 90 psi. |
Question 10 |
A | letting up on the brake pedal |
B | activating the parking brake |
C | pushing down on the brake pedal |
D | activating the emergency brake |
Question 11 |
A | When the air pressure is low. |
B | When the temperature is below freezing. |
C | When the brakes are hot. |
D | When the combined weight of your truckload and vehicle exceeds five tons. |
Question 12 |
A | the spring that is attached to the brake pedal |
B | specialized brakes only to be used during warm weather |
C | used for parking |
D | springs that press the brakes on to stop the vehicle if the air brakes leak out |
Question 13 |
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 14 |
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 15 |
A | located on either end of the vehicle's axles. |
B | all of these. |
C | bolted securely to the wheels |
D | used to hold the brake shoes and linings. |
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 oxygen is in the air tanks. |
D | To let you know how much water is in the air tank. |
Question 17 |
A | s-cam, shoes |
B | coil, boots |
C | valve spring, shoes |
D | pressure valve, boots |
Question 18 |
A | service brake, emergency brake systems |
B | disc brake, parking brake systems |
C | disc brake, emergency brake systems |
D | service brake, parking brake systems |
Question 19 |
A | Pump the brake pedal hard until you come to a stop. |
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 | Check your air pressure gauge and drive at highway speeds. |
Question 20 |
A | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
B | The air pressure has exceeded 150 psi. |
C | There is way too much air in the air compressor. |
D | All of these. |
Question 21 |
A | 175 |
B | 150 |
C | 125 |
D | 200 |
Question 22 |
A | No. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | Yes. |
Question 23 |
A | False |
B | True |
Question 24 |
A | application pressure gauge. |
B | safety valve. |
C | air tank drain. |
D | governor. |
Question 25 |
A | brake system |
B | storage tanks |
C | hydraulic brakes |
D | air tank drains |
← | 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 |
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