NCCCO Core Exam Questions and Answers: A Comprehensive Guide to Crane Safety and Operation, Exams of Nursing

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NCCCO CORE EXAM QUESTIONS AND CORRECT ANSWERS 2025

What was the result of boom deflection be  (^) Increased Boom radius When a crane is out of level by 1° it will lose the most capacity at what configuration  (^) Long boom minimum radius What is the purpose of using a spreader beam  (^) Support long hard to control loads Which of the following actions is most likely to cause two blocking  (^) Telescoping the boom out When is it safe to handle loads under powerlines  (^) The load know where any part of the crane can come closer than regulations allow When working your power lines tag lines and slings should be constructed of  (^) Probably propylene or polyethylene and webbing because they offer a fair insulating properties

When reading a load chart the listed capacity has an Asterix next to it this means  (^) The capacities are based on the cranes structural competence Pick can be made with the intermediate outriggers  (^) If there is a load chart for intermediate Outrigger work The main boom angle minus the gym offset would equal  (^) Jib angle to the ground You can use the range diagram to determine the  (^) Radius of unloaded boom Cranes on our acres are based on what percentage of stability  (^) 85% Cranes on crawlers are based on what percentage of stability  (^) 75% If a crayon is two blocked what functions should the anti-two block prevention system let you operate  (^) Boom up hoist down telescope in

Backward stability on a mobile crane can become an issue when the crane is working  (^) Over the side at a minimum radius Rotation resistant wire rope requires a higher safety factor because  (^) Internal damage occurs Timber mats work best when they are  (^) Bolted together Blocking under floats shall be  (^) Sufficient to support the crane and the load When operating a crane with a long boom on uneven ground you should  (^) Block under the pad and keep a 90° angle between the cylinder rod and pad When booming down a rough terrain crane and extending out Riggers from the cab you should  (^) Post a signal person One swing a suspended load on any crane with crawlers the most ground pressure will be exerted  (^) Over the corner A luffing jib on a conventional or hydraulic crane will

 (^) Boom up or down independently of the main boom On a crane off level by 1% with a main boom height of 100 feet the whip line would be off-center by  (^) 12 inches////12 inches for every 1° for 100 feet The crane center of gravity were very the most swinging from the rear to the side with what type of crane  (^) Truck crane When is sideload is introduced to a lattice boom what part of the boom would encourage the highest stress  (^) Boom tip Voice signals must include  (^) Function and direction  (^) Distance and speed  (^) Function and stop When assembling or disassembling a lattice boom when is it permissible to work under the boom  (^) When the AV Director shows it is in feasible not to and the limits time and movement////safe=never only when says permissible Eccentric main boom reeving can cause  (^) Twisting of the boom

If taking sides strain on a boom what concerns the operator the most Boom damage If a crane load chart has capacities listed in the shaded area this means that If overloaded structural confidence will be compromised As the layers of rope on a drum increase the allowable line Pull wil Decrease Of the following actions which one will most likely cause a side load condition 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 2 What is the minimum distance of crane must maintain from powerlines rated below 50 KV 10 feet What is the best procedures to follow if underground utilities are present Contact utility company

For boom is reeves eccentrically to the block the most common result would be Twisting of the boom What is the safety factor for 6 x 19 IWRC wire rope 3.5- What is the safety factor for rotation resistor wire rope 5- What is the safety factor for rigging hardware 5- What is the safety factor one hoisting personnel using IWRC wire Rope 7- What is the safety factor hoisting personnel using rotation resistance wire rope 10- Unless the manufacturer states otherwise the wind speed to seize hoisting Shall be 30 mph

Tipping capacities for crawler cranes are based on 75% The term load radius is best defined as 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 Yes When telescoping the boom section of a rubber tire which section should be telescoped first All sections should be telescoped equally Hooks must be discarded if a twist more than is found 0 degrees Hooks must be discarded if a throat opening of more than is found 5° Wire rope must be removed from service if any of the following conditions exist 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 Access roads Basket hitch is rated of a vertical hitch 200% How many broken wires must be present in one strand of one lay for running wire rope to be removed from service 3 How many broken wires must be present in rotation resistant wire rope to be removed from service 2 in six diameters What is the minimum clearance needed between cranes counterweight and any obstacle 2 feet To restrict access to a crane swing radius the operator must Barricade the area around the crane You should always have at least how many wraps on A hoist drum 2

A dynamic load What percent of a cranes rated capacity is it classified as a critical lift 75% During disassembly of a long boom the hog lines are connected on a maximum cantilever point and the boom is slightly lifted off the ground which pins are to be removed next The bottom pins ahead of the cantilever point If you were to make a left using a four legged bridle how many legs are you going to calculate the load 3 According to OSHA all cranes equipped with a luffing jib must have Check valve When performing picking Carrie with a boom truck the speed limit is As prescribed by the manufacturer When determining backward stability the crane must be set up under the following conditions Crane unloaded and load block on supports Crane on outriggers Maximum boom angle Crane SHOULD NOT BE in the longest possible boom

On a crane load chart the area referred to as over the front is Different depending on the crane manufactures definition When cranes included within the scope of ANSI are mounted on barges or pontoons the cranes load rating shall be Modified as recommended by the manufacturer The first layer of a Hoist drum should have a pitch diameter of no less than times the rope diameter 18 Drum rotation indicators must be installed on all hoist leavers True On a hydraulic boom hoist pistons a must be provided in case of hydraulic failure Pressure relief valve All cranes equipped with a torque converter must have a Clutch reachable from the operators station Controls for operating a superstructure mounted power plant shall include all of the following except Means to shut off two cycle diesel engines in emergency

When using single saddle or U bolt type clips the saddle shall NEVER be installed on The live end The pitch diameters for boom hoist sheaves shall not exceed 15 Pitch diameter load hoist sheave shall not exceed 18 Pitch diameters for load block sheaves shall not exceed 16 Prior to leaving a crane unattended the operator shall Land load or attachment Disengage master clutch Turn off engine secure from authorized use Before lifting a rated load the operator shall Left the load a few inches off the ground and apply the brake When performing a pic with a truck crane on outriggers the tires must be High enough to relieve them of the cranes weight

When blocking on the outrigger float the cribbing Shall be Sufficient to support the crane and its load When a crane is being used to lift personnel and inspection of the crane should be made Frequently When using audible signal is one signal would indicate Stop Two audible signals Go ahead Three audible signals Go back A crane must stay at least from energize powerlines under 50 Kv 10 feet A crane operator must respond to a stop signal from Eveyone

If any part of the crane rigging or attachments load/line can come within of a power line a dedicated spotter must be provided 20' Up to 50 KV 10 feet Over 50 to 200 kV 15' Over 200 to 350 KV 20' Over 350 to 50 0KV 25' Over 500 to 750 KV 35' Over 750 to 1000 Kv 45'

If operating a crane in proximity of power lines over 1000 V what is the minimum clearance Determined by the utility company During hoisting operations in proximity of powerlines all tag lines and rigging should be Synthetic Powerlines or presumed energized unless The utility companies certifies the lines are D energized and they are visibly grounded Up to. 75 kv 4' Over .75 to 50 Kv 6' Over 50 Kv to 345 Kv 10' Over 345 kvvolts to 750 kV 16 feet