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