NCCCO MOBILE CRANE EXAM

NCCCO MOBILE CRANE EXAM

QUESTIONS AND CORRECT 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.
• / 3

• 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

• 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? 2 / 3

• 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
• Project manager only
• Superintendent only
• Anyone - ANSWER- d.

• 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 - ANSWER- c.

• What is the definition of "operating radius?"
• / 3