Montana Air Brakes Practice Test
This is our Montana 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 | shoe |
B | s-cam drum |
C | wedge |
D | disc |
Question 2 |
A | springs that press the brakes on to stop the vehicle if the air brakes leak out |
B | the spring that is attached to the brake pedal |
C | used for parking |
D | specialized brakes only to be used during warm weather |
Question 3 |
A | disc brake, parking brake systems |
B | service brake, emergency brake systems |
C | service brake, parking brake systems |
D | disc brake, emergency brake systems |
Question 4 |
A | When pressure increases from 85 to 100 psi within 45 seconds. |
B | When pressure increases from 50 to 75 psi within three minutes. |
C | When the compressor shuts off between 70 to 90 psi. |
D | When the governor switch stops between 75 to 90 psi. |
Question 5 |
A | storage tanks |
B | brake system |
C | air tank drains |
D | hydraulic brakes |
Question 6 |
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 7 |
A | When the combined weight of your truckload and vehicle exceeds five tons. |
B | When the air pressure is low. |
C | When the temperature is below freezing. |
D | When the brakes are hot. |
Question 8 |
A | remove oil from the air lines |
B | reduce the risk of ice in the air brake valves |
C | evaporate any alcohol, which can damage the brake system |
D | remove fuel from the air lines |
Question 9 |
A | two, sixty |
B | one, thirty |
C | one, sixty |
D | three, sixty |
Question 10 |
A | False |
B | True |
Question 11 |
A | 200 |
B | 125 |
C | 150 |
D | 175 |
Question 12 |
A | The parking brake system, service brake system, and emergency brake system. |
B | The service brake system, manual brake system, and disc brake system. |
C | The disc brake system, drum brake system, and foundation brake system. |
D | The emergency brake system, parking brake system, and foundation brake system. |
Question 13 |
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 | None of these. |
D | To let you know how much water is in the air tank. |
Question 14 |
A | prevent someone from moving the vehicle. |
B | prevent them from freezing during cold temperatures. |
C | completely empty air out of the tank. |
D | drain oil and moisture from the tank. |
Question 15 |
A | application pressure gauge. |
B | air tank drain. |
C | governor. |
D | safety valve. |
Question 16 |
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 17 |
A | compressed air |
B | nitrogen and oxygen |
C | compressed gas |
D | oxygen and helium |
Question 18 |
A | Only if they are drum brakes. |
B | Yes. |
C | Only if they are disc brakes. |
D | No. |
Question 19 |
A | bolted securely to the wheels. |
B | located on either end of the vehicle's axles. |
C | used to hold the brake shoes and linings. |
D | all of these. |
Question 20 |
A | All of these. |
B | There is way too much air in the air compressor. |
C | The air pressure has exceeded 150 psi. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 21 |
A | activating the parking brake |
B | pushing down on the brake pedal |
C | activating the emergency brake |
D | letting up on the brake pedal |
Question 22 |
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 23 |
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 24 |
A | Once a week. |
B | Before every trip. |
C | Once a day. |
D | Every 1,000 miles. |
Question 25 |
A | s-cam, shoes |
B | valve spring, shoes |
C | pressure valve, boots |
D | coil, boots |
← | 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 | To let you know how much oxygen is in the air tanks. |
B | None of these. |
C | To let you know how much diesel fuel is in the vehicle. |
D | To let you know how much water is in the air tank. |
Question 2 |
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 3 |
A | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
B | The air pressure has exceeded 150 psi. |
C | All of these. |
D | There is way too much air in the air compressor. |
Question 4 |
A | The disc brake system, drum brake system, and foundation 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 service brake system, manual brake system, and disc brake system. |
Question 5 |
A | No. |
B | Only if they are drum brakes. |
C | Yes. |
D | Only if they are disc brakes. |
Question 6 |
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 7 |
A | disc brake, emergency brake systems |
B | service brake, parking brake systems |
C | service brake, emergency brake systems |
D | disc brake, parking brake systems |
Question 8 |
A | two, sixty |
B | one, thirty |
C | one, sixty |
D | three, sixty |
Question 9 |
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 10 |
A | pushing down on the brake pedal |
B | letting up on the brake pedal |
C | activating the parking brake |
D | activating the emergency brake |
Question 11 |
A | Once a day. |
B | Before every trip. |
C | Once a week. |
D | Every 1,000 miles. |
Question 12 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is only found on automobiles with hydraulic brakes. |
C | is known as an official vehicle inspection. |
D | is only on automobiles with hydraulic brakes. |
Question 13 |
A | When the combined weight of your truckload and vehicle exceeds five tons. |
B | When the temperature is below freezing. |
C | When the air pressure is low. |
D | When the brakes are hot. |
Question 14 |
A | springs that press the brakes on to stop the vehicle if the air brakes leak out |
B | the spring that is attached to the brake pedal |
C | used for parking |
D | specialized brakes only to be used during warm weather |
Question 15 |
A | Water and compressor oil. |
B | Dust and compressor oil. |
C | Compressed air does not contain any of these substances. |
D | Dust and water. |
Question 16 |
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 17 |
A | air tank drain. |
B | safety valve. |
C | governor. |
D | application pressure gauge. |
Question 18 |
A | False |
B | True |
Question 19 |
A | compressed air |
B | oxygen and helium |
C | nitrogen and oxygen |
D | compressed gas |
Question 20 |
A | storage tanks |
B | hydraulic brakes |
C | air tank drains |
D | brake system |
Question 21 |
A | wedge |
B | s-cam drum |
C | shoe |
D | disc |
Question 22 |
A | coil, boots |
B | s-cam, shoes |
C | valve spring, shoes |
D | pressure valve, boots |
Question 23 |
A | 200 |
B | 175 |
C | 150 |
D | 125 |
Question 24 |
A | Your brakes will instantly lock up. |
B | You will still have some air pressure left in the air tanks. |
C | Nothing will happen. |
D | You will instantly lose braking power. |
Question 25 |
A | prevent someone from moving the vehicle. |
B | prevent them from freezing during cold temperatures. |
C | drain oil and moisture from the tank. |
D | completely empty air out of the tank. |
← | 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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