Washington Air Brakes Practice Test
This is our Washington 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 | hydraulic brakes |
B | brake system |
C | storage tanks |
D | air tank drains |
Question 2 |
A | Compressed air does not contain any of these substances. |
B | Dust and compressor oil. |
C | Water and compressor oil. |
D | Dust and water. |
Question 3 |
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 4 |
A | two, sixty |
B | one, sixty |
C | three, sixty |
D | one, thirty |
Question 5 |
A | prevent them from freezing during cold temperatures. |
B | prevent someone from moving the vehicle. |
C | drain oil and moisture from the tank. |
D | completely empty air out of the tank. |
Question 6 |
A | governor. |
B | safety valve. |
C | air tank drain. |
D | application pressure gauge. |
Question 7 |
A | pushing down on the brake pedal |
B | activating the emergency brake |
C | letting up on the brake pedal |
D | activating the parking brake |
Question 8 |
A | No. |
B | Yes. |
C | Only if they are drum brakes. |
D | Only if they are disc brakes. |
Question 9 |
A | disc |
B | shoe |
C | s-cam drum |
D | wedge |
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 | True |
B | False |
Question 12 |
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 13 |
A | Every 1,000 miles. |
B | Before every trip. |
C | Once a week. |
D | Once a day. |
Question 14 |
A | 175 |
B | 150 |
C | 200 |
D | 125 |
Question 15 |
A | When the brakes are hot. |
B | When the temperature is below freezing. |
C | When the air pressure is low. |
D | When the combined weight of your truckload and vehicle exceeds five tons. |
Question 16 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is only on automobiles with hydraulic brakes. |
C | is known as an official vehicle inspection. |
D | is only found on automobiles with hydraulic brakes. |
Question 17 |
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 18 |
A | service brake, emergency brake systems |
B | service brake, parking brake systems |
C | disc brake, parking brake systems |
D | disc brake, emergency brake systems |
Question 19 |
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 20 |
A | compressed gas |
B | compressed air |
C | oxygen and helium |
D | nitrogen and oxygen |
Question 21 |
A | coil, boots |
B | s-cam, shoes |
C | pressure valve, boots |
D | valve spring, shoes |
Question 22 |
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 23 |
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 24 |
A | reduce the risk of ice in the air brake valves |
B | remove fuel from the air lines |
C | evaporate any alcohol, which can damage the brake system |
D | remove oil from the air lines |
Question 25 |
A | Safely bring the automobile to a stop while you still have control over the brakes. |
B | Check your air pressure gauge and drive at highway speeds. |
C | Stay calm and wait for the air brakes to come on automatically. |
D | Pump the brake pedal hard until you come to a stop. |
← | 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 | 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 2 |
A | prevent them from freezing during cold temperatures. |
B | prevent someone from moving the vehicle. |
C | completely empty air out of the tank. |
D | drain oil and moisture from the tank. |
Question 3 |
A | You will instantly lose braking power. |
B | Your brakes will instantly lock up. |
C | You will still have some air pressure left in the air tanks. |
D | Nothing will happen. |
Question 4 |
A | The air pressure has exceeded 150 psi. |
B | All of these. |
C | There is way too much air in the air compressor. |
D | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
Question 5 |
A | Dust and water. |
B | Dust and compressor oil. |
C | Compressed air does not contain any of these substances. |
D | Water and compressor oil. |
Question 6 |
A | the spring that is attached to the brake pedal |
B | specialized brakes only to be used during warm weather |
C | springs that press the brakes on to stop the vehicle if the air brakes leak out |
D | used for parking |
Question 7 |
A | True |
B | False |
Question 8 |
A | shoe |
B | disc |
C | wedge |
D | s-cam drum |
Question 9 |
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 10 |
A | s-cam, shoes |
B | valve spring, shoes |
C | pressure valve, boots |
D | coil, boots |
Question 11 |
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 12 |
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 13 |
A | Yes. |
B | Only if they are drum brakes. |
C | No. |
D | Only if they are disc brakes. |
Question 14 |
A | The service brake system, manual brake system, and disc 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 disc brake system, drum brake system, and foundation brake system. |
Question 15 |
A | two, sixty |
B | one, sixty |
C | three, sixty |
D | one, thirty |
Question 16 |
A | oxygen and helium |
B | nitrogen and oxygen |
C | compressed gas |
D | compressed air |
Question 17 |
A | reduce the risk of ice in the air brake valves |
B | remove oil from the air lines |
C | remove fuel from the air lines |
D | evaporate any alcohol, which can damage the brake system |
Question 18 |
A | When the air pressure is low. |
B | When the temperature is below freezing. |
C | When the brakes are hot. |
D | When the combined weight of your truckload and vehicle exceeds five tons. |
Question 19 |
A | applies and releases the vehicle's brakes using the brake pedal. |
B | is only found on automobiles with hydraulic brakes. |
C | is only on automobiles with hydraulic brakes. |
D | is known as an official vehicle inspection. |
Question 20 |
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 21 |
A | brake system |
B | air tank drains |
C | storage tanks |
D | hydraulic brakes |
Question 22 |
A | application pressure gauge. |
B | governor. |
C | air tank drain. |
D | safety valve. |
Question 23 |
A | Every 1,000 miles. |
B | Once a day. |
C | Before every trip. |
D | Once a week. |
Question 24 |
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 25 |
A | 150 |
B | 200 |
C | 125 |
D | 175 |
← | 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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