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