NCCCO CORE EXAM REAL EXAM QUESTIONS

NCCCO CORE EXAM REAL EXAM QUESTIONS

WITH VERIFIED ANSWERS RATED A+

Jib forestay and backstay pendant lines - Answer- Of equal length or the backstay pendant lines should be longer

Jib capacity increases as the angle to the ground decreases - Answer- False Whenever operating a crane around a newly constructed building which of these conditions could be dangerous - Answer- Un compacted soil

The ground pressure under outriggers higher than it is under a crawler track because of a smaller bearing surface - Answer- True

And Outrigger float should be approximately how much larger than Outrigger pad - Answer- 3x A crane sitting 3° off level can increase the boom stress by 50% - Answer- True The load line is hanging in the dead center of the room one position over the rear with a broom over the side the loan lined is observed to be all center this means - Answer- Not safe to use until level in all positions

Crane stability is based on - Answer- Lever principal

The center of gravity were very the most for different lifting positions with which type of crane - Answer- Truck crane

Load moment indicators warn the operator of an overload condition - Answer- True

Load dimensions could have as much bearing on boom radius as the load weight - Answer- True The flexion of the boom and pendant stretch will increase - Answer- Load radius When raising a Long boom off the ground what will avoid excessive pendent pull and boom compression - 1 / 4

Answer- Keep Black on ground until boom is at 30°

The approved working areas of a crane are referred to as - Answer- Quadrants of operation

The effective weight of a jib is - Answer- Higher than the actual weight or lower than the actual weight

Specific details on calculating the weight of crane components to set up for save lift is are found in - Answer- Load chart data

The load way numbers given in a crane load chart indicate the blank that the crane can safely lift

• Answer- Gross load

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

What is the safety factor for 6 x 19 IWRC wire rope - Answer- 3.5-1 What is 2 / 4

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 3 / 4

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

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 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 -

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