NCCCO MOBILE CRANE QUESTIONS

NCCCO MOBILE CRANE QUESTIONS

AND ANSWERS WIT H VERIFIED

SOLUTIONS NEWEST UPDATED

What action does a signal person intend the operator to perform if he extends his arm at shoulder height, makes a fist with his hand, and sticks his/her thumb up?

• Boom down
• Swing
• Boom up ✔✔
• Extend boom

When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid?

• 1% ✔✔
• 2%
• 5%
• 8%

The load line of the crane you're operating contacts an energized power line.There's no sign of any other danger, such as fire. What should you do?

• Climb down carefully from the crane cab
• Jump down, feet together
• Stay in the cab until the lines are de-energized ✔✔
• Get as far away from the crane as possible

According to OSHA 1926.1413, how many randomly distributed broken wires in rotation-resistant rope are cause for replacement of the rope?

• 1 broken wire in 6 rope diameters
• 2 broken wires in 30 rope diameters 1 / 3

• 3 broken wires in one strand in one lay
• 2 broken wires in 6 rope diameters ✔✔

What is the net capacity of a crane on main boom unless the manufacturer states otherwise?

• The capacity listed in the load chart minus the weight of the rigging and all

attachments ✔✔

• The capacity listed in the load chart plus the weight of the rigging and all

attachments

• The capacity listed in the load chart minus the weight of the rigging and all

attachments not in use

• The capacity listed in the load chart minus the weight of the rigging alone

What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection?

• It could swing out away from the crane ✔✔
• It could swing in towards the crane
• It could raise absolutely vertically
• It could shift in its rigging

What Standard Method hand signal is being illustrated?

• Swing ✔✔
• Stop
• Emergency Stop
• Travel

Who should an operator respond to a "stop" signal from?

• Appointed signal person only
• Project manager only
• Superintendent only 2 / 3

• Anyone ✔✔

Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise?

• The side
• The rear
• The front ✔✔
• The outriggers

What is the definition of "operating radius"?

• The distance from the base of the boom to the center of the load
• The distance from the front of the crane to the center of gravity of the load
• The distance from the center of rotation of the crane to the center of the load
• The distance from the center of rotation of the crane to the center of gravity of

the load ✔✔ What applies to the capacities below the bold line shown on a load chart?

• They are based on the structural strength of the crane
• They must not be used
• They are based on the stability of the crane ✔✔
• They should only be used if the crane is set up on outriggers

In which quadrant are rough terrain crane capacities generally greater?

• Over the front ✔✔
• Over the rear
• Over the right side
• Over the left side

According to federal requirements, under what conditions is it okay for a person to ride the headache ball?

• When there is no other way to gain access
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