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