NCCCO CORE Exam Questions with Correct

1 NCCCO NCCCO CORE Exam| Questions with Correct Verified Answers| Latest Update

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Why should only approved attachments or extra counterweights provided by the manufacturer be placed on the rear of the crane? - ANS ✓They could cause a backward stability problem.A mobile crane's jib is offset 15º versus its original 0º offset, but the boom angle remains unchanged. In this situation, the load

radius: - ANS ✓increases

Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect? - ANS ✓Collapsing the boom.When determining the position to a mobile crane should be left in

over night, when high winds in the forecast the operator should: -

ANS ✓Follow the manufacturers recommendations.If a mobile crane is NOT set-up level and the operator swings the load from the high side to the low side, what effect will that have on the radius? - ANS ✓The radius increase.Increasing the distance from the crane's center of gravity to the tipping axis will have what effect on the mobile crane? - ANS ✓Decreases stability.

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2 NCCCO Backward stability of a mobile crane is tested in which configuration listed below? - ANS ✓Basic boom at minimum angle with no load Deflection of the boom while operating a mobile crane will increase? - ANS ✓Load Radius (Swings out) A sudden start or stop of the hoisting function while operating a

mobile crane can produce a: - ANS ✓dynamic load

Before lifting an occupied personnel platform on a job site, which of the following applies? - ANS ✓Use 50% of rated capacity, Trial lift to anticipated weight, Ensure rigging dedicated to platform only.According to OSHA 1926. 1431, while hoisting a personnel platform, what weather condition listed below will promptly discontinue the operation? - ANS ✓Dangerous If working near overhead power line and using a tag line, which type of rope is least conductive to electricity? - ANS ✓Polypropylene When working near power lines with the mobile crane, where does OSHA require caution stickers be installed on all equipment?

• ANS ✓At operators station and 2 on the outside of the equipment.

According to OSHA table T, what is the minimum clearance for 133kV power lines? - ANS ✓10ft According to OSHA's table T, what clearance should a mobile crane IN TRANSIT keep while going under 445kV lines? - ANS ✓16ft NCCCO

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