Test 3 Combination

Question 0

7) when uncoupling the trailer, after you have shut off the trailer air supply and locked the trailer brakes, you should:

Answer 0

Back up gently to ease pressure on the fifth wheel locking jaws

Question 1

6) after the trailer has been coupled to the tractor, the tractor protection control valve should be placed in the_position.

Answer 1

Normal

Question 2

8) after you lock the kingpin into the fifth wheel, you should check the connection by:

Answer 2

Pulling the tractor ahead gently with the trailer brakes locked

Question 3

9) if you can not make a turn without entering another traffic lane, you should:

Answer 3

Turn wide as you complete your turn

Question 4

10) loss of air pressure in the emergency line cause:

Answer 4

Te trailer’s emergency brakes to come on

Question 5

11) in normal driving, some drivers use the hand valve before the brake pedal to prevent a jackknife. Which of these statements is true?

Answer 5

Is should not be done

Question 6

12) the tractor protection valve will close and the trailer emergency brakes will come on when there is a major leak in the_brake line.

Answer 6

Emergency