NCCCO CORE EXAMINATION TEST

NCCCO CORE EXAMINATION TEST

WITH ANSWERS TAGGED A+

✔✔If working near overhead power line and using a tag line, which type of rope is least conductive to electricity? - ✔✔Polypropylene

✔✔When working near power lines with the mobile crane, where does OSHA require caution stickers be installed on all equipment? - ✔✔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? - ✔✔10ft

✔✔According to OSHA's table T, what clearance should a mobile crane IN TRANSIT keep while going under 445kV lines? - ✔✔16ft

✔✔According to OSHA when is it safe to hoist loads with a mobile crane below energized power lines? - ✔✔When the fully extended boom can't reach the prohibited zone.

✔✔According to OSHA 1926. 1411, when you encounter power lines with a voltage of 44kV and the crane is TRAVELING, according to Table T, what is the minimum required clearance? - ✔✔6ft

✔✔According to OSHA, mobile crane load block hooks must not have a twist in excess

of: - ✔✔0

✔✔According to OSHA, mobile crane load blocks hooks must not have a throat opening

in excess of: - ✔✔5%

✔✔When correctly installing U-bolt type wire rope clips, the U portion of the clip shall be

on: - ✔✔the dead or short end

✔✔What is the angle between the top of the load and the sling leg referred to in sling load charts? - ✔✔Horizontal sling angle

✔✔When installing a wedge socket, it must be attached with the load line pulling in a

straight line from the: - ✔✔pin

✔✔What is the purpose of placing mats or cribbing under outrigger floats? - ✔✔Distribute the force over a larger area

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✔✔Where is the best location for leveling a crane? - ✔✔Upperworks

✔✔When may blocking (cribbing) be placed under outrigger beams on mobile cranes? - ✔✔Never approved

✔✔Mobile cranes should be level to within what percent of grade? - ✔✔1%

✔✔Timber crane mats work best when they are - ✔✔Bolted together

✔✔When arriving in the crane at the job site, the operator should first determine the condition of - ✔✔access roads

✔✔What surface listed below would NOT be a good location for assembly or setup of a mobile crane? - ✔✔Above underground vaults

✔✔Each outrigger pad and its blocking should be sufficient to support? - ✔✔The total weight of the crane and its load

✔✔How does high wind affect a mobile crane with a long boom? - ✔✔Introduces side load onto the boom

✔✔When is the only time the outrigger beams should be less than fully extended? - ✔✔The load chart indicates that this is allowed.

✔✔Eccentric main boom tip reeving causing which of the following: - ✔✔Twisting of the main boom

✔✔Which type of wire rope listed below is installed on most cranes? - ✔✔Right regular lay

✔✔The hoist drum flange shall extend a minimum of ________ over the top layer of wire rope at all times while crane is in operation. - ✔✔1/2 inch

✔✔Which of the following is classified as a standing wire rope? - ✔✔Pendant line.

✔✔When lifting on outriggers the floats or pads should always be: - ✔✔Raised to touch the tires firmly on the ground.

✔✔What is the minimum design factor required for a regular lay, boom or hoist wire rope? - ✔✔3.5

✔✔It is important to know when lubricating crane hoist wire rope, that the lubricant

must: - ✔✔not hinder visual inspection

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