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