1 ....COPYRIGHT - NCCCO MOBILE CRANE EXAM QUESTIONS AND ANSWERS 1...

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NCCCO MOBILE CRANE EXAM

QUESTIONS AND ANSWERS

• 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 - ANSWER-c.
• 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% - ANSWER-a. 1 / 3

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• 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 - ANSWER-c.
• 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
• 3 broken wires in one strand in one lay
• 2 broken wires in 6 rope diameters - ANSWER-d.
• 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 2 / 3

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• 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 -

ANSWER-a.

• 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 - ANSWER-a.
• What Standard Method hand signal is being illustrated?

• Swing
• Stop
• Emergency Stop
• Travel - ANSWER-a.
• Who should an operator respond to a "stop" signal from?
• Appointed signal person only
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