Our Combinations quiz will surely assist the trainee in understanding how the truck and trailer functions together as one mighty powerful unit.  Your ability to gasp the functuality and maintenance of equipment is truly demonstrate with ease and taking our online course. You can take your exam with confidence.

5 Sample Questions

If you're inspecting a tractor's landing gear after uncoupling the trailer, where should the tractor be?

  • A. With the tractor frame under the trailer.
  • B. With the tractor frame beside the trailer.
  • C. With the tractor frame infront of the trailer.

Which statement explains how to test trailer emergency brakes

  • A. Charge the trailer air brake system and check that the trailer rolls freely. Then stop and push out the trailer air supply control, or place it in the "emergency" position. Pull gently on the trailer with the tractor to check that the trailer emergency brakes are on
  • B. Charge the trailer air brake system and check that the trailer rolls freely. Then stop and pull out the trailer air supply control, or place it in the "emergency" position. Pull gently on the trailer with the tractor to check that the trailer emergency brakes are on
  • C. Charge the trailer air brake system and check that the trailer stops freely. Then stop and pull out the trailer air supply control, or place it in the "emergency" position. Pull gently on the trailer with the tractor to check that the trailer emergency brakes are on
  • D. Option 4

What is another name for Shut-off valves?

  • A. Cut Out Cocks
  • B. Cut  In Cocks
  • C. Cut out Valves

What is the function of the Shut-off valves?

  • A. These valves permit closing the air-lines off when another trailer is not being towed.
  • B. These valves stop closing the air-lines off when another trailer is not being towed.
  • C. These valves permit closing the pipe-lines off when another trailer is not being towed.

The service line is also called the control line or signal line. True or False?

  • A. True
  • B. False

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