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