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Forklift Operator Knowledge Test (OSHA 1910.178)

Stability, capacity and load center: practice questions

Our Forklift operator bank has 38 questions on this topic. Here are 5 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1

Why does the eTool say a large rectangular box should be loaded widthwise across the forks rather than lengthwise?

  1. Loading it lengthwise blocks the horn
  2. Widthwise loading makes the forks longer
  3. Loading it widthwise blocks the operator's view, so lengthwise is the safer way
  4. Loading it lengthwise moves the load center forward and can exceed capacity
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D. Loading it lengthwise moves the load center forward and can exceed capacity — Placing a long load lengthwise shifts the load center forward, away from the front wheels, which can exceed capacity and lift the rear wheels.

Question 2

What does the standard say about handling long or high loads that may affect capacity?

  1. They may be handled only by two trucks together
  2. They are always prohibited
  3. They may be carried raised for visibility
  4. They must be adjusted
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D. They must be adjusted — The long or high (including multiple-tiered) loads which may affect capacity must be adjusted.

Question 3

When a forklift tips forward, what is its axis of rotation?

  1. The rear steer axle, which lifts off the ground first when tipping forward
  2. The top of the mast
  3. The center of the counterweight
  4. The line where the front wheels touch the ground
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D. The line where the front wheels touch the ground — The axis of rotation when a truck tips forward is the front wheels' points of contact with the pavement.

Question 4

How is the "moment" defined in Appendix A?

  1. The time it takes the truck to stop
  2. An object's weight times its distance from a fixed point, usually the fulcrum
  3. The time it takes a loaded truck to come to a full stop from top speed
  4. The weight of the truck divided by its length
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B. An object's weight times its distance from a fixed point, usually the fulcrum — Moment is the product of the object's weight times the distance from a fixed point, usually the fulcrum.

Question 5

Even a small grade can be dangerous when turning. What grade does the eTool give as enough to roll a truck over laterally?

  1. Only grades above 45 percent
  2. Only grades above 30 percent
  3. Even a 10 percent grade
  4. Grades do not affect lateral stability
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C. Even a 10 percent grade — The eTool says never to turn on a grade or ramp; even a 10 percent grade may shift the combined center of gravity outside the stability triangle.

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