NCCCO Mobile Crane Exam

NCCCO Mobile Crane Exam ( / ) Questions and 100% Correct Verified Answers| Grade A

.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?

• Boom down
• Swing
• Boom up
• Extend boom - ANSWER-c.

.1. Where must the operator's manual be kept during crane operations?

• The operator's manual must be kept in a location that is readily available
• The operator's manual must be kept in the cab at all times
• The operator's manual must be kept in the dispatch office
• The operator's manual must be kept in a secure place - ANSWER-b.

.10. What is the definition of "operating radius?"

• 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

• The distance from the center of rotation of the crane to the center of the load
• The distance from the center of rotation of the crane to the center of gravity of the load - ANSWER-d.

.10. What shall be in the operators cab during crane operations?

• load charts
• Inspection reports
• Hand signal chart
• The crane log - ANSWER-a. 1 / 3

.11. What applies to the capacities below the bold line shown on a load chart?

• They are based on the structural strength of the crane
• They must not be used
• They are based on the stability of the crane
• They should only be used if the crane is set up on outriggers - ANSWER-c.

.11. Which of the following is considered duty cycle work?

• Pile- driving
• Setting trusses
• Clam - Shell digging

d Unloading trucks - ANSWER-c.

.12. In which quadrant are rough terrain crane capacities generally greater?

• Over the front
• Over the rear
• Over the right side
• Over the left side - ANSWER-a.

.12. When doing cycle work, the load chart must be reduced by how much?

• 50%
• 20%
• 30%
• none - ANSWER-b.

.13. According to federal requirements, under what conditions is it okay for a person to ride the headache ball?

• When there is no other way to gain access
• When the lift has been approved by an engineer 2 / 3

• When other means would be more dangerous
• It is never okay - ANSWER-d.

.13. Which components are not parts of the boom?

• Lacing
• Cords
• Cross members
• Heel pins - 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?

• 10%.
• 15%.
• 20%.
• 30%. - ANSWER-c.

.15. From which two points should the boom be measured?

• From the base of the boom to the center of the boom tip sheave
• From the boom hinge pins to the boom tip
• From the boom hinge pins to the center of the boom tip sheaved. d. From the base of the boom to the

boom tip - ANSWER-c.

.16. What is the preferred method of installing wire rope from a reel onto a hoist drum?

• The rope runs from the top of the reel to the bottom of the drum
• The rope runs from the bottom of the reel to the top of the drum
• The rope runs from the top of the reel to the top of the drum
• There is no preferred method - ANSWER-c.

.17. Over which quadrant are truck crane capacities usually greater?

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