class a cdl combo vehicles

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Author:
johnnykettell
ID:
282879
Filename:
class a cdl combo vehicles
Updated:
2014-09-13 01:31:19
Tags:
class cdl
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Description:
class a cdl combos
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  1. What is the correct setup for shut-off valves?
    a)The rear trailers shut-off valves open and the front closed

    *b)The front trailers shut-off valves open and the rear closed

    c)All shut-off valves should be open

    d)All shut-off valves should be closed
  2. If the trailer is too high when you try to couple what may happen?
    *a)It may not couple correctly

    b)The king pin may fall off

    c)The trailer may tip and flip over

    d)All of the above
  3. What is the emergency air line for?
    a)It supplies air to the tractor air tanks and controls the service brakes on combination vehicles

    *b)It supplies air to the trailer air tanks and controls the emergency brakes on combination vehicles

    c)It supplies air to the tractor air tanks and controls the emergency brakes on combination vehicles

    d)It supplies air to the trailer air tanks and controls the service brakes on combination vehicles

    e)None of the above
  4. Two things that are important to prevent rollover are _______.
    a)The weight and length of the vehicle

    b)Evenly loaded trailer and properly inflated tires

    c)Keeping the cargo center of gravity as high as possible and drive slowly around turns

    *d)Keeping the cargo as close to the ground as possible and drive slowly around turns
  5. Which of the following is the definition of offtracking?
    a)Offtracking is when the front wheels go one direction and the trailer wheels go in the other direction

    b)Offtracking is when the front wheels follow a different path than the front wheels

    c)Offtracking is when the rear wheels go into a skid and the front wheels continue in a straight line

    *d)Offtracking is when the rear wheels follow a different path than the front wheels

    e)none of the above
  6. After coupling, there should be_____ space between the upper and lower fifth wheel.
    a)1/8 inch

    b)1/32 inch

    c)1/4 inch

    d)1/16 inch

    *e)None of the above
  7. Which trailer is most likely to turn over when you turn suddenly while pulling double trailers?
    a)Neither trailer is more likly to turn over

    b)Both trailers

    c)The front trailer

    *d)The rear trailer

    e)None of the above

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