NCCCO MOBILE CRANE Mobile Crane NCCER 2025,
crane operator exam, NCCER 100 questions And
answers, rigging and lifting, crane safety test,
equipment inspection, verified NCCER answers
1. What action does a signal person intend the operator to perform if he exten
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ds his arm at shoulder height, makes a fist with his hand, and sticks his/her th
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umb up? B
a. Boom down
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b. Swing
B B
c. Boom up
B B B
d. Extend boom - answerc.
B B B B
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2. When hoisting personnel, within what percentage of level must a telescopic
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boom crane be in order for the gross ratings in the load chart to remain valid?
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a. 1% B
b. 2% B B
c. 5% B B
d. 8% - answera.
B B B
3. The load line of the crane you're operating contacts an energized power line
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. There's no sign of any other danger, such as fire. What should you do?
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a. Climb down carefully from the crane cab
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b. Jump down, feet together
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c. Stay in the cab until the lines are de-energized
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d. Get as far away from the crane as possible - answerc.
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4. According to OSHA 1926.1413, how many randomly distributed broken wire
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s in rotation-resistant rope are cause for replacement of the rope?
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a. 1 broken wire in 6 rope diameters
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b. 2 broken wires in 30 rope diameters
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c. 3 broken wires in one strand in one lay
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d. 2 broken wires in 6 rope diameters - answerd.
B B B B B B B B B
5. What is the net capacity of a crane on main boom unless the manufacturer
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states otherwise?
B
a. The capacity listed in the load chart minus the weight of the rigging and all
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attachments B
b. The capacity listed in the load chart plus the weight of the rigging and all at
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tachments B
c. The capacity listed in the load chart minus the weight of the rigging and all
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attachments not in use B B B B
d. The capacity listed in the load chart minus the weight of the rigging alone -
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answera.
B
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6. What may happen to a properly rigged load when lifted off the ground unle
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ss the operator takes account of boom deflection?
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a. It could swing out away from the crane
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b. It could swing in towards the crane
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c. It could raise absolutely vertically
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d. It could shift in its rigging - answera.
B B B B B B B B
7. What Standard Method hand signal is being illustrated?
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a. Swing
B B
b. Stop
B B
c. Emergency Stop
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d. Travel - answera.
B B B
8. Who should an operator respond to a "stop" signal from?
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a. Appointed signal person only
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