NCCCO Core Exam Practice Questions

NCCCO Core Exam Practice Questions

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Operating A mobile crane with a long boom, on uneven ground, what support condition should be considered?

• Blocking under the outrigger berms
• Keeping a 75 Degree angle between cylinder rod and pad
• Keeping a 90 Degree angle between cylinder rod and pad
• Blocking under the front bumper weight - CORRECT ANSWERS -C) Keeping a 90

Degree angle between cylinder rod and pad

When may blocking (Cribbing) be placed under outrigger beams on mobile cranes?

• Extending Beams
• Increasing Capacity
• Improving Stability
• Never Approved - CORRECT ANSWERS -D) Never Approved

Mobiles Cranes should be level within what percent of Grade?

• 3%
• 2%
• 5%

D) 1% - CORRECT ANSWERS -D) 1%

Timber Crane mats work best when they are:

• Bolted Together
• Nailed Together
• Wired Together
• Left Loose - CORRECT ANSWERS -A) Bolted together

When arriving in the crane at the job site, the operator should first determine the

condition of the:

• Crane setup location
• Access Roads
• Parking Lot
• Headache Ball - CORRECT ANSWERS -B) Access Roads

What surface listed below would NOT be a good location for assembly or setup of a mobile crane? 2 / 3

• Above Compacted Fill
• Above Highway Asphalt
• Above Underground Vaults
• Above Highway Concrete - CORRECT ANSWERS -C) Above Underground Vaults

Each Outrigger pad and its blocking should be sufficient to support?

• 85% of the load Chart
• The total weight of the crane and its load
• The total weight of the crane and its boom
• 75% of the load chart - CORRECT ANSWERS -B)The total weight of the crane and

its load What is the purpose of Placing Mats or Cribbing under outrigger Floats?

• Raise the Tires off the ground
• Distribute the force over a larger area
• Allow the float to be Level with Surface
• Raise the operator's cab for better vision. - CORRECT ANSWERS -B.) Distribute the

force over a larger area.

Where is the best location for leveling a Crane?

• Carrier
• Upperworks
• Cab
• Carbody - CORRECT ANSWERS -B) Upperworks

Before Leveling a mobile crane on outriggers, an operator should ensure:

• the weight of the crane is on all the tires
• There is blocking under the outrigger beams
• There is no weight of the crane bearing on any tires
• There is weight only bearing on some tires - CORRECT ANSWERS-C) There is no

weight of the crane bearing on any tires How does high wind affect a mobile crane with a long boom

• Decrease load line capacity
• Requires you to slip the swing brake
• Introduces side load onto the boom
• Has no effect on overall crane capacity - CORRECT ANSWERS -C) Introduces side

load onto the boom

When is the only time the outrigger beams should be less than fully extended?

• The load Chart indicates that this is allowed
• There is not enough space to extend the beam
• The crane is working over the front
• the main boom is fully retracted - CORRECT ANSWERS -A) The load chart indicates

that this is allowed

What is the primary purpose for a rooster sheave or auxiliary boom point sheave?

• Separate the load hoist lines
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