NCCCO MOBILE CRANE EXAM QUESTIONS

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NCCCO MOBILE CRANE EXAM QUESTIONS

AND ANSWERS UPDATED ( / )

(VERIFIED ANSWERS)

• 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 - ANS ✓c.
• In which quadrant are rough terrain crane capacities generally greater?
• Over the front
• Over the rear
• Over the right side
• Over the left side - ANS ✓a.
• 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
• When other means would be more dangerous
• It is never okay - ANS ✓d.
• 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%.

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• 15%.
• 20%.
• 30%. - ANS ✓c.
• 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 - ANS ✓c.

• 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 - ANS ✓c.
• Over which quadrant are truck crane capacities usually greater?
• Over the front.
• Over the rear.
• Over the front right outrigger.
• Over the side. - ANS ✓b.
• According to OSHA, which accessible area of an operating crane must

always be barricaded?

• The swing radius of the crane
• The carbody or chassis
• The swing radius of the rear of the rotating superstructure
• The distance between the car body or chassis and the boom tip - ANS ✓c.

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• What is the OSHA regulation governing cranes in construction?
• 1910.180
• 1926.1400
• 1926.556
• 1910.184 - ANS ✓b.
• Under which circumstance is a crack in the windshield of a crane cab

okay?

• As long as it causes no visible distortion that would interfere with safe

operations

• As long as it is less than 6 inches long
• As long as the windshield is replaced on the next annual inspection d. It is

never okay - ANS ✓a.

• Under which circumstance does OSHA permits hoisting of personnel by

crane?

• As long as the prevailing wind speed is less than 35 mph
• As long as there is no less hazardous or practicable way
• As long as all personnel have CPR training
• As long as no aerial work platform is available - ANS ✓b.

Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted?

• On-outrigger chart
• On-rubber chart
• On-outrigger chart minus 20%
• On-rubber chart plus 20% - ANS ✓b.

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