Kentucky Air Brakes Practice Test
This is our Kentucky 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 | Yes. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | No. |
Question 2 |
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 3 |
A | 200 |
B | 150 |
C | 125 |
D | 175 |
Question 4 |
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 5 |
A | springs that press the brakes on to stop the vehicle if the air brakes leak out |
B | specialized brakes only to be used during warm weather |
C | the spring that is attached to the brake pedal |
D | used for parking |
Question 6 |
A | brake system |
B | air tank drains |
C | storage tanks |
D | hydraulic brakes |
Question 7 |
A | True |
B | False |
Question 8 |
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 9 |
A | one, thirty |
B | one, sixty |
C | two, sixty |
D | three, sixty |
Question 10 |
A | s-cam drum |
B | shoe |
C | wedge |
D | disc |
Question 11 |
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 12 |
A | activating the emergency brake |
B | pushing down on the brake pedal |
C | activating the parking brake |
D | letting up on the brake pedal |
Question 13 |
A | prevent them from freezing during cold temperatures. |
B | drain oil and moisture from the tank. |
C | prevent someone from moving the vehicle. |
D | completely empty air out of the tank. |
Question 14 |
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 15 |
A | disc brake, emergency brake systems |
B | service brake, emergency brake systems |
C | service brake, parking brake systems |
D | disc brake, parking brake systems |
Question 16 |
A | nitrogen and oxygen |
B | oxygen and helium |
C | compressed air |
D | compressed gas |
Question 17 |
A | coil, boots |
B | pressure valve, boots |
C | valve spring, shoes |
D | s-cam, shoes |
Question 18 |
A | The emergency brake system, parking brake system, and foundation brake system. |
B | The disc brake system, drum brake system, and foundation brake system. |
C | The service brake system, manual brake system, and disc brake system. |
D | The parking brake system, service brake system, and emergency brake system. |
Question 19 |
A | Once a week. |
B | Every 1,000 miles. |
C | Before every trip. |
D | Once a day. |
Question 20 |
A | air tank drain. |
B | governor. |
C | safety valve. |
D | application pressure gauge. |
Question 21 |
A | Dust and water. |
B | Water and compressor oil. |
C | Dust and compressor oil. |
D | Compressed air does not contain any of these substances. |
Question 22 |
A | Nothing will happen. |
B | You will still have some air pressure left in the air tanks. |
C | You will instantly lose braking power. |
D | Your brakes will instantly lock up. |
Question 23 |
A | located on either end of the vehicle's axles. |
B | used to hold the brake shoes and linings. |
C | all of these. |
D | bolted securely to the wheels. |
Question 24 |
A | Check your air pressure gauge and drive at highway speeds. |
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 | Pump the brake pedal hard until you come to a stop. |
Question 25 |
A | Something is malfunctioning, and you should have the vehicle checked by a mechanic. |
B | There is way too much air in the air compressor. |
C | All of these. |
D | The air pressure has exceeded 150 psi. |
← | 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 | When the air pressure is low. |
B | When the brakes are hot. |
C | When the temperature is below freezing. |
D | When the combined weight of your truckload and vehicle exceeds five tons. |
Question 2 |
A | one, thirty |
B | one, sixty |
C | three, sixty |
D | two, sixty |
Question 3 |
A | is only found on automobiles with hydraulic brakes. |
B | is only 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 4 |
A | activating the parking brake |
B | pushing down on the brake pedal |
C | letting up on the brake pedal |
D | activating the emergency brake |
Question 5 |
A | Once a day. |
B | Every 1,000 miles. |
C | Once a week. |
D | Before every trip. |
Question 6 |
A | True |
B | False |
Question 7 |
A | The emergency brake system, parking 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 disc brake system, drum brake system, and foundation brake system. |
Question 8 |
A | Check your air pressure gauge and drive at highway speeds. |
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 | Pump the brake pedal hard until you come to a stop. |
Question 9 |
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 10 |
A | Dust and water. |
B | Water and compressor oil. |
C | Compressed air does not contain any of these substances. |
D | Dust and compressor oil. |
Question 11 |
A | shoe |
B | wedge |
C | disc |
D | s-cam drum |
Question 12 |
A | prevent them from freezing during cold temperatures. |
B | completely empty air out of the tank. |
C | drain oil and moisture from the tank. |
D | prevent someone from moving the vehicle. |
Question 13 |
A | service brake, parking brake systems |
B | disc brake, emergency brake systems |
C | disc brake, parking brake systems |
D | service brake, emergency brake systems |
Question 14 |
A | When the compressor shuts off between 70 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 governor switch stops between 75 to 90 psi. |
Question 15 |
A | remove fuel from the air lines |
B | evaporate any alcohol, which can damage the brake system |
C | remove oil from the air lines |
D | reduce the risk of ice in the air brake valves |
Question 16 |
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 17 |
A | You will still have some air pressure left in the air tanks. |
B | You will instantly lose braking power. |
C | Nothing will happen. |
D | Your brakes will instantly lock up. |
Question 18 |
A | Yes. |
B | Only if they are drum brakes. |
C | Only if they are disc brakes. |
D | No. |
Question 19 |
A | oxygen and helium |
B | compressed air |
C | compressed gas |
D | nitrogen and oxygen |
Question 20 |
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 21 |
A | bolted securely to the wheels |
B | located on either end of the vehicle's axles. |
C | all of these. |
D | used to hold the brake shoes and linings. |
Question 22 |
A | 150 |
B | 175 |
C | 125 |
D | 200 |
Question 23 |
A | hydraulic brakes |
B | air tank drains |
C | storage tanks |
D | brake system |
Question 24 |
A | application pressure gauge. |
B | safety valve. |
C | governor. |
D | air tank drain. |
Question 25 |
A | valve spring, shoes |
B | s-cam, shoes |
C | coil, boots |
D | pressure valve, 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 |
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