Wisconsin Air Brakes Practice Test
This is our Wisconsin 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 disc brake system, drum brake system, and foundation 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 parking brake system, service brake system, and emergency brake system. |
Question 2 |
A | prevent someone from moving the vehicle. |
B | drain oil and moisture from the tank. |
C | completely empty air out of the tank. |
D | prevent them from freezing during cold temperatures. |
Question 3 |
A | True |
B | False |
Question 4 |
A | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
B | There is way too much air in the air compressor. |
C | The air pressure has exceeded 150 psi. |
D | All of these. |
Question 5 |
A | compressed air |
B | compressed gas |
C | nitrogen and oxygen |
D | oxygen and helium |
Question 6 |
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 7 |
A | storage tanks |
B | brake system |
C | hydraulic brakes |
D | air tank drains |
Question 8 |
A | Every 1,000 miles. |
B | Once a week. |
C | Before every trip. |
D | Once a day. |
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 | 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 | 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 | 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 13 |
A | s-cam drum |
B | shoe |
C | wedge |
D | disc |
Question 14 |
A | is only found on automobiles with hydraulic brakes. |
B | is only on automobiles with hydraulic brakes. |
C | applies and releases the vehicle's brakes using the brake pedal. |
D | is known as an official vehicle inspection. |
Question 15 |
A | two, sixty |
B | one, thirty |
C | three, sixty |
D | one, sixty |
Question 16 |
A | coil, boots |
B | s-cam, shoes |
C | valve spring, shoes |
D | pressure valve, boots |
Question 17 |
A | To let you know how much diesel fuel is in the vehicle. |
B | To let you know how much oxygen is in the air tanks. |
C | To let you know how much water is in the air tank. |
D | None of these. |
Question 18 |
A | specialized brakes only to be used during warm weather |
B | used for parking |
C | springs that press the brakes on to stop the vehicle if the air brakes leak out |
D | the spring that is attached to the brake pedal |
Question 19 |
A | safety valve. |
B | air tank drain. |
C | application pressure gauge. |
D | governor. |
Question 20 |
A | 175 |
B | 200 |
C | 150 |
D | 125 |
Question 21 |
A | remove fuel from the air lines |
B | reduce the risk of ice in the air brake valves |
C | remove oil from the air lines |
D | evaporate any alcohol, which can damage the brake system |
Question 22 |
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 23 |
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 | Stay calm and wait for the air brakes to come on automatically. |
D | Pump the brake pedal hard until you come to a stop. |
Question 24 |
A | activating the emergency brake |
B | pushing down on the brake pedal |
C | activating the parking brake |
D | letting up on the brake pedal |
Question 25 |
A | Only if they are drum brakes. |
B | Only if they are disc brakes. |
C | Yes. |
D | No. |
← | 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 | valve spring, shoes |
B | s-cam, shoes |
C | coil, boots |
D | pressure valve, boots |
Question 2 |
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 emergency brake system, parking brake system, and foundation brake system. |
D | The disc brake system, drum brake system, and foundation brake system. |
Question 3 |
A | 175 |
B | 150 |
C | 200 |
D | 125 |
Question 4 |
A | bolted securely to the wheels |
B | located on either end of the vehicle's axles. |
C | all of these. |
D | used to hold the brake shoes and linings. |
Question 5 |
A | activating the parking brake |
B | letting up on the brake pedal |
C | pushing down on the brake pedal |
D | activating the emergency brake |
Question 6 |
A | completely empty air out of the tank. |
B | prevent someone from moving the vehicle. |
C | prevent them from freezing during cold temperatures. |
D | drain oil and moisture from the tank. |
Question 7 |
A | governor. |
B | safety valve. |
C | application pressure gauge. |
D | air tank drain. |
Question 8 |
A | compressed gas |
B | oxygen and helium |
C | compressed air |
D | nitrogen and oxygen |
Question 9 |
A | True |
B | False |
Question 10 |
A | When the temperature is below freezing. |
B | When the combined weight of your truckload and vehicle exceeds five tons. |
C | When the brakes are hot. |
D | When the air pressure is low. |
Question 11 |
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 12 |
A | two, sixty |
B | three, sixty |
C | one, sixty |
D | one, thirty |
Question 13 |
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 14 |
A | Before every trip. |
B | Once a day. |
C | Every 1,000 miles. |
D | Once a week. |
Question 15 |
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 16 |
A | disc brake, parking brake systems |
B | disc brake, emergency brake systems |
C | service brake, parking brake systems |
D | service brake, emergency brake systems |
Question 17 |
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 18 |
A | Yes. |
B | Only if they are disc brakes. |
C | No. |
D | Only if they are drum brakes. |
Question 19 |
A | The air pressure has exceeded 150 psi. |
B | There is way too much air in the air compressor. |
C | All of these. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 20 |
A | disc |
B | s-cam drum |
C | wedge |
D | shoe |
Question 21 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is only on automobiles with hydraulic brakes. |
C | is only found on automobiles with hydraulic brakes. |
D | is known as an official vehicle inspection. |
Question 22 |
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 the compressor shuts off between 70 to 90 psi. |
D | When pressure increases from 50 to 75 psi within three minutes. |
Question 23 |
A | To let you know how much diesel fuel is in the vehicle. |
B | None of these. |
C | To let you know how much water is in the air tank. |
D | To let you know how much oxygen is in the air tanks. |
Question 24 |
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 25 |
A | brake system |
B | hydraulic brakes |
C | air tank drains |
D | storage tanks |
← | 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 Wisconsin CDL Practice Test