Massachusetts Air Brakes Practice Test
This is our Massachusetts 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 | 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 2 |
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 3 |
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. |
Question 4 |
A | shoe |
B | wedge |
C | disc |
D | s-cam drum |
Question 5 |
A | brake system |
B | storage tanks |
C | hydraulic brakes |
D | air tank drains |
Question 6 |
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 7 |
A | nitrogen and oxygen |
B | oxygen and helium |
C | compressed air |
D | compressed gas |
Question 8 |
A | disc brake, emergency brake systems |
B | service brake, parking brake systems |
C | disc brake, parking brake systems |
D | service brake, emergency brake systems |
Question 9 |
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 governor switch stops between 75 to 90 psi. |
D | When the compressor shuts off between 70 to 90 psi. |
Question 10 |
A | specialized brakes only to be used during warm weather |
B | the spring that is attached to the brake pedal |
C | used for parking |
D | springs that press the brakes on to stop the vehicle if the air brakes leak out |
Question 11 |
A | three, sixty |
B | two, sixty |
C | one, thirty |
D | one, sixty |
Question 12 |
A | Your brakes will instantly lock up. |
B | You will instantly lose braking power. |
C | You will still have some air pressure left in the air tanks. |
D | Nothing will happen. |
Question 13 |
A | All of these. |
B | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
C | There is way too much air in the air compressor. |
D | The air pressure has exceeded 150 psi. |
Question 14 |
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 15 |
A | 200 |
B | 175 |
C | 150 |
D | 125 |
Question 16 |
A | governor. |
B | application pressure gauge. |
C | safety valve. |
D | air tank drain. |
Question 17 |
A | coil, boots |
B | valve spring, shoes |
C | s-cam, shoes |
D | pressure valve, boots |
Question 18 |
A | When the temperature is below freezing. |
B | When the combined weight of your truckload and vehicle exceeds five tons. |
C | When the air pressure is low. |
D | When the brakes are hot. |
Question 19 |
A | located on either end of the vehicle's axles. |
B | all of these. |
C | used to hold the brake shoes and linings. |
D | bolted securely to the wheels. |
Question 20 |
A | No. |
B | Only if they are disc brakes. |
C | Yes. |
D | Only if they are drum brakes. |
Question 21 |
A | letting up on the brake pedal |
B | activating the parking brake |
C | pushing down on the brake pedal |
D | activating the emergency brake |
Question 22 |
A | True |
B | False |
Question 23 |
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 24 |
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 25 |
A | Before every trip. |
B | Once a week. |
C | Once a day. |
D | Every 1,000 miles. |
← | 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 | True |
B | False |
Question 2 |
A | nitrogen and oxygen |
B | compressed air |
C | compressed gas |
D | oxygen and helium |
Question 3 |
A | drain oil and moisture from the tank. |
B | completely empty air out of the tank. |
C | prevent them from freezing during cold temperatures. |
D | prevent someone from moving the vehicle. |
Question 4 |
A | Once a day. |
B | Every 1,000 miles. |
C | Once a week. |
D | Before every trip. |
Question 5 |
A | remove fuel from the air lines |
B | remove oil from the air lines |
C | evaporate any alcohol, which can damage the brake system |
D | reduce the risk of ice in the air brake valves |
Question 6 |
A | Yes. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | No. |
Question 7 |
A | is only found on automobiles with hydraulic brakes. |
B | is known as an official vehicle inspection. |
C | is only on automobiles with hydraulic brakes. |
D | applies and releases the vehicle's brakes using the brake pedal. |
Question 8 |
A | There is way too much air in the air compressor. |
B | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
C | All of these. |
D | The air pressure has exceeded 150 psi. |
Question 9 |
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 10 |
A | letting up on the brake pedal |
B | activating the parking brake |
C | activating the emergency brake |
D | pushing down on the brake pedal |
Question 11 |
A | 175 |
B | 150 |
C | 200 |
D | 125 |
Question 12 |
A | The emergency brake system, parking brake system, and foundation 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 parking brake system, service brake system, and emergency brake system. |
Question 13 |
A | When the brakes are hot. |
B | When the combined weight of your truckload and vehicle exceeds five tons. |
C | When the air pressure is low. |
D | When the temperature is below freezing. |
Question 14 |
A | s-cam, shoes |
B | coil, boots |
C | pressure valve, boots |
D | valve spring, shoes |
Question 15 |
A | You will instantly lose braking power. |
B | You will still have some air pressure left in the air tanks. |
C | Your brakes will instantly lock up. |
D | Nothing will happen. |
Question 16 |
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 17 |
A | three, sixty |
B | one, sixty |
C | one, thirty |
D | two, sixty |
Question 18 |
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 19 |
A | safety valve. |
B | application pressure gauge. |
C | governor. |
D | air tank drain. |
Question 20 |
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 | specialized brakes only to be used during warm weather |
D | used for parking |
Question 21 |
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 22 |
A | hydraulic brakes |
B | brake system |
C | storage tanks |
D | air tank drains |
Question 23 |
A | Pump the brake pedal hard until you come to a stop. |
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 | Check your air pressure gauge and drive at highway speeds. |
Question 24 |
A | disc brake, emergency brake systems |
B | service brake, parking brake systems |
C | disc brake, parking brake systems |
D | service brake, emergency brake systems |
Question 25 |
A | disc |
B | wedge |
C | shoe |
D | s-cam drum |
← | 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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