NCCCO MOBILE CRANE STUDY GUIDE

NCCCO MOBILE CRANE (STUDY GUIDE)

COMPREHENSIVE QUESTIONS AND CORRECT

ANSWERS GRADE A+

• 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 - (correct 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 - (correct answer) d.
• 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 1 / 3

• Boom up
• Extend boom - (correct 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% - (correct answer) a.

• 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 - (correct answer) a.

• / 3

• 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 - (correct answer) a.

• What Standard Method hand signal is being illustrated?

• Swing
• Stop
• Emergency Stop
• Travel - (correct answer) a.

• Who should an operator respond to a "stop" signal from?
• Appointed signal person only
• Project manager only
• Superintendent only
• Anyone - (correct answer) d.

• Which area do truck cranes without a 5th outrigger generally have no

lifting capacity unless the manufacturer states otherwise?

• The side
• / 3