NCCCO CCO CRANE EXAMS BUNDLED TOGETHER LATEST

NCCCO/ CCO CRANE EXAMS BUNDLED TOGETHER (LATEST /

UPDATE) QUESTIONS AND 100% CORRECT VERIFIED ANSWERS|

GRADE A

When working on rubber, cranes are rated at what percentage of tipping:

• 70%
• 75%
• 80%
• 85% -

e) Answers-75%

When a crane is working "on outriggers" the only time they should be less than fully

extended is when:

• working alongside the highway and cannot block a lane
• you are handling light loads
• the main boom is being lifted
• there is a load chart for this operation -

e) Answers-there is a load chart for this operation

A truck crane set up with the outriggers extended and set, and tires touching the

ground, the operator should refer to what load chart:

• intermediate chart
• over the front chart
• on rubber chart
• 85% of the main chart -

e) Answers-on rubber chart

Blocking paced under the ends of crawler tracks will:

• increase the crane's stability when operating over front or back
• increase the crane's stability when operating over side
• stop crane from traveling unexpectedly
• stop crane from sliding unexpectedly -

e) Answers-increase the crane's stability when operating over front or back

What quadrant produces the least amount of ground pressure on a lattice crawler:

• corner
• side
• front
• rear -

e) Answers-side

During assembly where should you attach slings to lift boom sections:

• to the top of main chords
• to the top end fittings
• 2 feet from end of section
• center of boom section -

e) Answers-to the top end fittings 1 / 2

When a lattice boom truck crane is set up on outriggers, the floats or pads should

always be:

• large enough to support two times the applied load
• with the tires firmly on the ground
• secured to the outriggers
• placed on the mats -

e) Answers-secured to the outriggers

A truck crane operating with outriggers fully extended and set, but does not have a front

outrigger, the operator should:

• operate over the front with caution
• refer to the manufacturer's working area diagram
• block under the bumper to provide more stability
• only operate over the front at a 50% reduction of the load chart -

e) Answers-refer to the manufacturer's working area diagram

When a crane is operating on properly set outriggers, the tipping axis is located at the:

• radius of the counterweight
• center pin of the crane
• boom heel pins
• point where the outriggers touch the ground -

e) Answers-point where the outriggers touch the ground

The purpose of placing mats or cribbing under outrigger floats is to:

• get the tires off the ground
• distribute the downward force of the float over a larger area
• allow the float to be level
• raise the operator's cab for better vision -

e) Answers-distribute the downward force of the float over a larger area

A crane loses stability when its leverage on the load is:

• less than a load's leverage on the crane
• 70% of the load's leverage on the crane
• 80% of the load's leverage on the crane
• more than the load's leverage on the crane -

e) Answers-less than a load's leverage on the crane

If a lattice boom truck crane is going to perform work over the front it must have:

• a second signal person stationed over the front of the crane
• a short boom incapable of tipping the crane
• a front mounted counterweight to prevent tipping in that area
• a load chart stating capacities in that area -

e) Answers-a load chart stating capacities in that area

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
• / 2