NCCCO CORE EXAM QESTIONS AND ANSWERS

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NCCCO CORE EXAM QESTIONS AND ANSWERS

If taking sides strain on a boom what concerns the operator the most - ANSWER >>>>Boom damage

If a crane load chart has capacities listed in the shaded area this means that - ANSWER >>>>If overloaded structural confidence will be compromised

As the layers of rope on a drum increase the allowable line Pull wil - ANSWER >>>>Decrease

Of the following actions which one will most likely cause a side load condition - ANSWER >>>>Abruptly starting or stopping the swing Cording to OSHA with any hook ball or attachment at its lowest point a minimum of blank reps must remain on the drum at all times - ANSWER >>>>2

What is the minimum distance of crane must maintain from powerlines rated below 50 KV - ANSWER >>>>10 feet What is the best procedures to follow if underground utilities are present - ANSWER >>>>Contact utility company

For boom is reeves eccentrically to the block the most common result would be - ANSWER >>>>Twisting of the boom 1 / 4

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2 What is the safety factor for 6 x 19 IWRC wire rope - ANSWER >>>>3.5-1

What is the safety factor for rotation resistor wire rope - ANSWER >>>>5-1 What is the safety factor for rigging hardware - ANSWER >>>>5-1

What is the safety factor one hoisting personnel using IWRC wire Rope - ANSWER >>>>7-1

What is the safety factor hoisting personnel using rotation resistance wire rope - ANSWER >>>>10-1 Unless the manufacturer states otherwise the wind speed to seize hoisting Shall be - ANSWER >>>>30 mph

When hoisting personnel OSHA requires wind speed not to exceed - ANSWER >>>>20 mph

Who has the responsibility of determining the correct weight of the load - ANSWER >>>>Supervisor

When an operator leave there a crane they must - ANSWER >>>>Land load engage all locks and Pawls and lock machine

When is it safe to work closer than alarm for distance from any powerline - ANSWER >>>>When the utility company certifies that the lines are D energized

When operating a crawler crane what is the most unstable allowable quadrant of operation - ANSWER >>>>Side 2 / 4

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3 What is not a good location for crane set up - ANSWER >>>>Above utilities

If an operator arrives at a job site and the crane is already set up how would he checked the main an auxiliary breaks - ANSWER >>>>Left the load a few inches off the ground and test the brakes Tipping capacities for crawler cranes are based on - ANSWER >>>>75%

The term load radius is best defined as - ANSWER >>>>The distance from the center of rotation of the crane to the center of gravity of the suspended load Should the load be applied when determining the proper boom angle - ANSWER >>>>Yes

When telescoping the boom section of a rubber tire which section should be telescoped first - ANSWER >>>>All sections should be telescoped equally

Hooks must be discarded if a twist more than is found - ANSWER >>>>0 degrees Hooks must be discarded if a throat opening of more than is found - ANSWER >>>>5°

Wire rope must be removed from service if any of the following conditions exist - ANSWER >>>>Six randomly distributed broken wires Wear of more than 1/3 of the outside diameter 3 / 4

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4 three broken wires and one strand of one lay length

When arriving first on the job site the operator should first determine the condition of the - ANSWER >>>>Access roads Basket hitch is rated of a vertical hitch - ANSWER >>>>200%

How many broken wires must be present in one strand of one lay for running wire rope to be removed from service - ANSWER >>>>3

How many broken wires must be present in rotation resistant wire rope to be removed from service - ANSWER >>>>2 in six diameters What is the minimum clearance needed between cranes counterweight and any obstacle - ANSWER >>>>2 feet

To restrict access to a crane swing radius the operator must - ANSWER >>>>Barricade the area around the crane

You should always have at least how many wraps on A hoist drum - ANSWER >>>>2

When working around powerlines you must - ANSWER >>>>Never stockpile material under powerlines Maintain the correct distance according to the rated KV Ground the crane with the proper grounding cable

Boom angle is best described as - ANSWER >>>>The angle between the loaded boom and the horizontal

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