NCCCO MOBILE CRANE EXAM

NCCCO MOBILE CRANE EXAM

WITH ANSWERS TAGGED A+

✔✔11. What applies to the capacities below the bold line shown on a load chart?✔✔21. Under which circumstance does OSHA permits hoisting of personnel by crane?

• As long as the prevailing wind speed is less than 35 mph
• As long as there is no less hazardous or practicable way
• As long as all personnel have CPR training
• As long as no aerial work platform is available - ✔✔b.

✔✔22. Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted?

• On-outrigger chart
• On-rubber chart
• On-outrigger chart minus 20%
• On-rubber chart plus 20% - ✔✔b.

✔✔23. According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?"

• 45%
• 50%
• 75%
• 85% - ✔✔b.

✔✔24. When is side loading of crane booms permitted?

• When the operator says it's OK
• So long as no jib is installed
• Only when the outriggers are fully extended
• Only with freely suspended loads - ✔✔d.

✔✔25. What is indicated if an operator makes two audible signals when moving a crane?

• He/she intends to stop
• He/she intends to back up
• He/she intends to go ahead
• He/she intends to stop (emergency) - ✔✔c.

✔✔26. When may blocking (cribbing) be placed under outrigger beams?

• When beams cannot be extended all the way out
• To increase capacity
• To improve stability
• Never - ✔✔d.
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✔✔27. What is the result of placing timber blocking under the tips of the tracks on a crawler crane?

• Decreases the permitted capacity of the crane
• Makes the crane more stable
• Reduces the capacity of the crane
• Makes the crane less stable - ✔✔b.

✔✔28. According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane?

• 110%
• 100%
• 85%
• 75% - ✔✔b.

✔✔29. Where is the tipping axis of a crawler crane located?

• It is always at the centerline of the idler or sprocket
• It depends if the idler or sprocket are in line or offset from the track rollers
• It is through the centerline of the crane cab
• It is through the boom butt section - ✔✔b.

✔✔30. What should be done with materials placed under overhead energized power lines?

• Be dragged out
• Be lifted as normal
• Not be lifted by crane
• Handled with extra care - ✔✔c.

✔✔What standard method hand signal is being illustrated?

• Boom up
• Boom down
• Retract boom
• Hoist - ✔✔c.

✔✔32. Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall?

• As close as possible to the wall
• At least as far back as the depth of the wall below ground
• At a distance at least half the depth of the cellar wall below ground d. Anywhere,

since the wall is unaffected by the weight of the crane - ✔✔b.

✔✔33. How should the wheels of a crane be positioned when it is set up for working on outriggers?

• Just touching the ground
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