NCCCO Final Test Questions

NCCCO Final Test Questions and Answers 100% Correct Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? - ANSWER - The front What is the definition of "operating radius?" - ANSWER - The distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? - ANSWER

• They are based on the stability of the crane

In which quadrant are rough terrain crane capacities generally greater? - ANSWER - Over the front What percentage do most manufacturers requires a crane's load chart capacity to be reduced by for duty cycle operations - such as high-volume concrete placement?

- ANSWER - 20%

From which two points should the boom be measured? - ANSWER - From the boom hinge pins, to the center of the boom tip sheave What is the preferred method of installing wire rope from a reel onto a hoist drum? - ANSWER - Running the rope from the top of the reel, to the top of the drum.Over which quadrant are truck crane capacities usually greater? - ANSWER - Over the rear According to OSHA, which accessible area of an operating crane must always be barricaded? - ANSWER - The swing radius of the rear of the rotating superstructure What is the OSHA regulation governing cranes in construction? - ANSWER -

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According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane? - ANSWER - 100%

Timber blocking placed under the tips of the tracks on a crawler crane will: -

ANSWER - Make the crane more stable What is the primary purpose of placing blocking under the ends of the tracks on a crawler crane? - ANSWER - To ensure that the tipping axis is the sprocket or idler, rather than a track roller.Suppose you are traveling a crawler crane with the drive trains to the rear, and you need to turn right on hard, and level ground. What should you do? - ANSWER - Travel the left track forward to minimize wear.Where is the tipping axis of a crawler crane located? - ANSWER - It depends if the idler or sprocket are in line or offset from the track rollers What should be done with materials placed under overhead energized power lines? - ANSWER - NOT be lifted by crane What determines the amount of deduction required for an erected jib that is not being used? - ANSWER - The effective weight of the jib What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? - ANSWER - It increases How should the wheels of a crane be positioned when it is set up for working on outriggers? - ANSWER - Just high enough off the ground to relieve the tires of crane weight Where is the tipping axis of a crawler crane located? - ANSWER - It depends if the idler or sprocket are in line or offset from the track rollers

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