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Practice test 8 of 10

Kentucky CDL — Air Brakes Practice Test 8

The Kentucky CDL — Air Brakes knowledge test has 25 questions; you need 20 correct (80%) to pass.

This practice test follows that format: 25 questions, pass with 20 correct. Answer every page, then grade it to see the answers and explanations.

Questions 1–10 of 25

  1. 1.When checking governor cut-in and cut-out during the final air brake check, at about what pressures should the compressor start and stop?
  2. 2.If only the tractor of a combination has ABS and the trailer starts to swing out, what should you do?
  3. 3.At roughly what tank pressure does the governor reach cut-out and stop the compressor from pumping?
  4. 4.For a smooth normal stop with a manual transmission, when should you push in the clutch?
  5. 5.Which statement about ABS and your normal brakes is correct?
  6. 6.What is the main job of the air compressor on an air brake vehicle?
  7. 7.What information does a supply pressure gauge give the driver?
  8. 8.Why can needlessly pumping the brake pedal be dangerous on an air brake vehicle?
  9. 9.At 55 mph on dry pavement, about how many feet does air brake lag add to the stopping distance?
  10. 10.In "controlled braking" during an emergency, how hard do you apply the brakes?

0 of 25 answered