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Practice test 7 of 10

Nebraska CDL — Air Brakes Practice Test 7

The Nebraska 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.A new mechanic makes four statements about the air compressor. Which one does NOT agree with the manual?
  2. 2.In the first part of Nebraska's Air Brake Check you build air pressure up to governor cutoff. What else does the Nebraska Specifics page expect you to do at that point?
  3. 3.A driver's CDL carries the L restriction. Under the definition Section 1 uses for that restriction, which vehicles is the driver barred from operating?
  4. 4.A driver skips the slack adjuster check because the truck has automatic slack adjusters. What does the manual say?
  5. 5.The modulating control valve some vehicles use to apply the spring brakes gradually is spring-loaded. What reason does the manual give for that?
  6. 6.What form does the manual say the low air pressure warning usually takes?
  7. 7.A truck's low air warning is a 'wig wag.' What does that device do when system pressure falls below 55 psi?
  8. 8.While you are braking with the controlled braking method, how much should you move the steering wheel?
  9. 9.Overheated brake drums expand. What does the manual say that does to the brake shoes and linings?
  10. 10.What does the manual mean by 'brake lag' on a vehicle with air brakes?

0 of 25 answered