NCCCO MOBILE CRANE EXAM QUESTIONS AND ANSWERS
(VERIFIED AND WELL DETAILED ANSWERS) LATEST UPDATE
2025/2026
1. 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?
a. Boom down
b. Swing
c. Boom up
d. Extend boom - CORRECT ANSWER - c.
2. 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?
a. 1%
b. 2%
c. 5%
d. 8% - CORRECT 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?
a. Climb down carefully from the crane cab
b. Jump down, feet together
c. Stay in the cab until the lines are de-energized
d. Get as far away from the crane as possible - CORRECT ANSWER - c.
,4. According to OSHA 1926.1413, how many randomly distributed broken wires in
rotation-resistant rope are cause for replacement of the rope?
a. 1 broken wire in 6 rope diameters
b. 2 broken wires in 30 rope diameters
c. 3 broken wires in one strand in one lay
d. 2 broken wires in 6 rope diameters - CORRECT ANSWER - d.
5. What is the net capacity of a crane on main boom unless the manufacturer states
otherwise?
a. The capacity listed in the load chart minus the weight of the rigging and all
attachments
b. The capacity listed in the load chart plus the weight of the rigging and all
attachments
c. The capacity listed in the load chart minus the weight of the rigging and all
attachments not in use
d. The capacity listed in the load chart minus the weight of the rigging alone -
CORRECT ANSWER - a.
6. What may happen to a properly rigged load when lifted off the ground unless the
operator takes account of boom deflection?
a. It could swing out away from the crane
b. It could swing in towards the crane
c. It could raise absolutely vertically
d. It could shift in its rigging - CORRECT ANSWER - a.
,7. What Standard Method hand signal is being illustrated?
a. Swing
b. Stop
c. Emergency Stop
d. Travel - CORRECT ANSWER - a.
8. Who should an operator respond to a "stop" signal from?
a. Appointed signal person only
b. Project manager only
c. Superintendent only
d. Anyone - CORRECT ANSWER - d.
9. Which area do truck cranes without a 5th outrigger generally have no lifting
capacity unless the manufacturer states otherwise?
a. The side
b. The rear
c. The front
d. The outriggers - CORRECT ANSWER - c.
10. What is the definition of "operating radius?"
a. The distance from the base of the boom to the center of the load b. The distance
from the front of the crane to the center of gravity of the load
c. The distance from the center of rotation of the crane to the center of the load
, d. The distance from the center of rotation of the crane to the center of gravity of
the load - CORRECT ANSWER - d.
11. What applies to the capacities below the bold line shown on a load chart?
a. They are based on the structural strength of the crane
b. They must not be used
c. They are based on the stability of the crane
d. They should only be used if the crane is set up on outriggers - CORRECT
ANSWER - c.
12. In which quadrant are rough terrain crane capacities generally greater?
a. Over the front
b. Over the rear
c. Over the right side
d. Over the left side - CORRECT ANSWER - a.
13. According to federal requirements, under what conditions is it okay for a
person to ride the headache ball?
a. When there is no other way to gain access
b. When the lift has been approved by an engineer
c. When other means would be more dangerous
d. It is never okay - CORRECT ANSWER - d.
14. By what percentage do most manufacturers require a crane's load chart capacity
to be reduced by for duty cycle operations such as high-volume concrete
placement?
(VERIFIED AND WELL DETAILED ANSWERS) LATEST UPDATE
2025/2026
1. 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?
a. Boom down
b. Swing
c. Boom up
d. Extend boom - CORRECT ANSWER - c.
2. 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?
a. 1%
b. 2%
c. 5%
d. 8% - CORRECT 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?
a. Climb down carefully from the crane cab
b. Jump down, feet together
c. Stay in the cab until the lines are de-energized
d. Get as far away from the crane as possible - CORRECT ANSWER - c.
,4. According to OSHA 1926.1413, how many randomly distributed broken wires in
rotation-resistant rope are cause for replacement of the rope?
a. 1 broken wire in 6 rope diameters
b. 2 broken wires in 30 rope diameters
c. 3 broken wires in one strand in one lay
d. 2 broken wires in 6 rope diameters - CORRECT ANSWER - d.
5. What is the net capacity of a crane on main boom unless the manufacturer states
otherwise?
a. The capacity listed in the load chart minus the weight of the rigging and all
attachments
b. The capacity listed in the load chart plus the weight of the rigging and all
attachments
c. The capacity listed in the load chart minus the weight of the rigging and all
attachments not in use
d. The capacity listed in the load chart minus the weight of the rigging alone -
CORRECT ANSWER - a.
6. What may happen to a properly rigged load when lifted off the ground unless the
operator takes account of boom deflection?
a. It could swing out away from the crane
b. It could swing in towards the crane
c. It could raise absolutely vertically
d. It could shift in its rigging - CORRECT ANSWER - a.
,7. What Standard Method hand signal is being illustrated?
a. Swing
b. Stop
c. Emergency Stop
d. Travel - CORRECT ANSWER - a.
8. Who should an operator respond to a "stop" signal from?
a. Appointed signal person only
b. Project manager only
c. Superintendent only
d. Anyone - CORRECT ANSWER - d.
9. Which area do truck cranes without a 5th outrigger generally have no lifting
capacity unless the manufacturer states otherwise?
a. The side
b. The rear
c. The front
d. The outriggers - CORRECT ANSWER - c.
10. What is the definition of "operating radius?"
a. The distance from the base of the boom to the center of the load b. The distance
from the front of the crane to the center of gravity of the load
c. The distance from the center of rotation of the crane to the center of the load
, d. The distance from the center of rotation of the crane to the center of gravity of
the load - CORRECT ANSWER - d.
11. What applies to the capacities below the bold line shown on a load chart?
a. They are based on the structural strength of the crane
b. They must not be used
c. They are based on the stability of the crane
d. They should only be used if the crane is set up on outriggers - CORRECT
ANSWER - c.
12. In which quadrant are rough terrain crane capacities generally greater?
a. Over the front
b. Over the rear
c. Over the right side
d. Over the left side - CORRECT ANSWER - a.
13. According to federal requirements, under what conditions is it okay for a
person to ride the headache ball?
a. When there is no other way to gain access
b. When the lift has been approved by an engineer
c. When other means would be more dangerous
d. It is never okay - CORRECT ANSWER - d.
14. By what percentage do most manufacturers require a crane's load chart capacity
to be reduced by for duty cycle operations such as high-volume concrete
placement?
