NCCCO CORE EXAM 2023-2024 ACTUAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) GRA, Exams of Nursing

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NCCCO CORE EXAM 2023-2024 ACTUAL EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) GRADED A+ 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 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 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 Controls for operating a superstructure mounted power plant shall include all of the following except - Answer- Means to shut off two cycle diesel engines in emergency Forces on a cranes hand lever Shall not exceed - Answer- 35 lbs Forces on a cranes Foot pedal shall not exceed - Answer- 50 pounds The travel distance on a cranes two way lever must not exceed from the neutral position - Answer- 14 inches The travel distance on a cranes one-way lever must not exceed from the neutral position - Answer- 24 inches Frequent inspection occurs - Answer- Every shift Frequent inspection should be performed by - Answer- Competent person Periodic inspection occurs - Answer- Weekly to monthly When using single saddle or U bolt type clips the saddle shall NEVER be installed on - Answer- The live end The pitch diameters for boom hoist sheaves shall not exceed - Answer- 15 Pitch diameter load hoist sheave shall not exceed - Answer- 18 Pitch diameters for load block sheaves shall not exceed - Answer- 16 Prior to leaving a crane unattended the operator shall - Answer- Land load or attachment Disengage master clutch Turn off engine secure from authorized use Before lifting a rated load the operator shall - Answer- 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 - Answer- High enough to relieve them of the cranes weight When blocking on the outrigger float the cribbing Shall be - Answer- 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 - Answer- Frequently When using audible signal is one signal would indicate - Answer- Stop Two audible signals - Answer- Go ahead Three audible signals - Answer- Go back A crane must stay at least from energize powerlines under 50 Kv - Answer- 10 feet A crane operator must respond to a stop signal from - Answer- Eveyone The margin of stability on a truck crane is - Answer- 85% Of the following who is permitted inside the fall zone - Answer- Qualified rigger The revolving frame of equipment in which operating machinery is mounted is referred to as - Answer- Super structure When is it permissible to be under the boom when assembling or disassembling a boom - Answer- When the A/D Director proves it is in feasible not to work under the boom When installing pins on a lattice boom how should the pins be installed - Answer- Tapered side out When assembling or disassembling a lattice boom crane the amount of boom extended out past the bridal/equalizer is known as - Answer- Cantilever length During assembly or disassembly of cranes no part of the crane or its components can come within of powerlines - Answer- 10' If any part of the crane rigging or attachments load/line can come within of a power line a dedicated spotter must be provided - Answer- 20' Up to 50 KV - Answer- 10 feet Over 50 to 200 kV - Answer- 15' Over 200 to 350 KV - Answer- 20' Over 350 to 500KV - Answer- 25' Over 500 to 750 KV - Answer- 35' Over 750 to 1000Kv - Answer- 45' If operating a crane in proximity of power lines over 1000 V what is the minimum clearance - Answer- Determined by the utility company During hoisting operations in proximity of powerlines all tag lines and rigging should be - Answer- Synthetic Powerlines or presumed energized unless - Answer- The utility companies certifies the lines are D energized and they are visibly grounded Up to .75 kv - Answer- 4' Over .75 to 50 Kv - Answer- 6' Over 50 Kv to 345 Kv - Answer- 10' Over 345 kvvolts to 750 kV - Answer- 16 feet 750 kV to 1000 kV - Answer- 20 feet What type of inspection requires no documentation - Answer- Shift During what inspection classification does inspection of ground conditions take place - Answer- Shift I frequent inspection is made - Answer- Weekly to monthly What is the safety factor for rigging - Answer- 5-1 What is the safety factor for rotation resistant wire rope - Answer- 5-1 In order of hitch strength goes as follows - Answer- Basket vertical choker Can a crane's roof serve as a workstation for rigging or assembly/disassembly or maintenance - Answer- Only if it has the capability of supporting 250 pounds A load applied at an angle to the vertical plane of the boom is referred to as - Answer- Side load///// when you pick some thing not being directly over the Center of the load The drum flange shall not extend a minimum of what from the top layer of rope - Answer- Half an inch Boom hoist sheaves shall have a minimum pitch diameter of - Answer- 15 times rope diameter Load hoist sheaves shall have a minimum pitch diameter of - Answer- 18 times rope diameter Lower block sheaves shall have a minimum pitch diameter of - Answer- 16 times rope diameter All load test shall not exceed what of the manufacturers rated capacity - Answer- 110% Before leaving his crane unattended the operator must - Answer- Land the load set all dogs and pawls and shut the engine What is the minimum clearance needed between the cranes counterweight and any obstacle - Answer- 2 feet When setting up a crane near a ditch or excavation you should stay what distance from the edge of the excavation - Answer- Two times the depth of the excavation When setting up a crane near a retaining wall you should stay what distance from the edge of the wall - Answer- The same distance as the walls height When performing duty cycle work the rule of thumb is to - Answer- Use 80% of the manufacturers load chart A cranes quadrants of operation is - Answer- Different depending on the manufacturers load chart When hoisting personnel the type of hook to be used must be the type that can be - Answer- Locked and latched Load rating charts are based on a percentage of the loads which produce a tipping condition and the least stable direction the percentage is watt for a truck crane - Answer- 85% A standard hand signal chart must be posted conspicuously at the job site the ideal spot for the chart is - Answer- On the crane If the crane manufacturer does not specify what order and which boom sections are to be assembled - Answer- Smallest sections are closer to the boom base Boom connecting pins should be installed - Answer- From the inside out Personal hoisting by a crane is permitted when - Answer- No other safe means are available Cranes lifting personal platforms must have - Answer- Anti-two block What is not permitted to be in an occupied personnel hoist - Answer- Construction materials Tools and materials in an occupied personnel basket - Answer- Must be secured When rigging personal platforms using a wire rope bridal - Answer- A link must be used to ensure the load is divided evenly Bridals and rigging used for personal hoisting - Answer- Can only be used for personal hoisting The ground pressure under outriggers is higher than it is under a crawler track because of a smaller bearing surface - Answer- True Deflection of the boom and pendant stretch will increase - Answer- Load radius Within what percentage of level does a telescopic boom crane have to be for the gross ratings in the load chart to remain valid - Answer- 1% The load line of the crane you're operating comes into contact with an energize powerlines there's no sign of any other dangers such as fire and such situation you should - Answer- Stay in the cab until the lines are D energized Unless the operator takes a count of boom deflection when lifted off the ground a properly rigged load may - Answer- Swingout away from the crane According to be 30.5 mobile crane standard it's OK for an operator to leave the cab of a crane with the engine running so long as - Answer- The operator keeps the crane in view and restricts access to the area around the crane Unless the manufacturer states otherwise truck cranes generally have no lifting capacity over which area - Answer- front Working radius is defined as the distance from the - Answer- Center of rotation of the crane to the center of gravity of the load Rough terrain cranes capacities are generally greater over the - Answer- Front Truck crane capacities are usually greater over the - Answer- rear A crane is set up with three of us for outriggers fully extended and the fourth retracted unless the manufacturer states otherwise the capacity of the crane in this configuration will be found in the - Answer- On Rubber chart Sideloading of the cranes boom is permitted - Answer- Only with freely suspended loads Blocking cribbing may be placed under the Outrigger beams - Answer- Never they go under the pads Timber blocking placed under the tips of the tracks on a crawler crane will: - Answer- Make the crane more stable When handling boom sections the best place for slings to be attached is - Answer- At the pin connection points at the ends of the top chords The tipping access of a crawler crane - Answer- Depends if the idler or sprocket are in line or offset from the track rollers Rotation resistant wire rope requires a higher safety factor because - Answer- Internal damage occurs Timber mats work best when they are - Answer- Bolted together Blocking under floats shall be - Answer- Sufficient to support the crane and the load When operating a crane with a long boom on uneven ground you should - Answer- 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 - Answer- Post a signal person One swing a suspended load on any crane with crawlers the most ground pressure will be exerted - Answer- Over the corner A luffing jib on a conventional or hydraulic crane will - Answer- 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 offcenter by - Answer- 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 - Answer- Truck crane When is sideload is introduced to a lattice boom what part of the boom would encourage the highest stress - Answer- Boom tip Voice signals must include - Answer- 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 - Answer- 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 - Answer- Twisting of the boom When putting wire rope on a drum the rope can be spoiled to within of the top of the drum - Answer- Half an inch To prevent unauthorized access to the cranes working area though needs to be barricaded - Answer- Working radius What is the minimum distance from the cranes counterweight and any obstacle - Answer- 2 feet Which of the following weather conditions could restrict or stop hoisting activities - Answer- Wind gusts Rigging hooks must be discarded if the throat opening is increased by more than - Answer- 5% A crane performing personal lifts must not exceed of its rated capacity - Answer- 50% When a load is being landed in the fall zone who should be in the fall zone - Answer- Qualified rigger During assembly or disassembly of the crane when is fall protection required - Answer- If the fall possibility is greater than 15 feet Direct of attachment of a personal hoist to a luffing jib is prohibited - Answer- True What is the safe working load of rotation resistance wire rope - Answer- 5 to 1 By order of hitch strength which is the correct answer - Answer- Basket, vertical, choker What is the purpose of using a jib - Answer- increase in height You should always have at least how many wraps on a hoist drum - Answer- 2 On a load chart values above the bold line mean - Answer- Capacities based on structural competence The primary purpose for a rooster sheave or auxiliary boom point sheave is to - Answer- Separate the hoist lines Where is the best location for a leveling a crane - Answer- Upperworks What is the safe working load of right regular lay IWRC wire rope - Answer- 3.5-1 What is the safe working load of boom hoist wire rope - Answer- 3.5 to 1 What is the safe working load of rigging slings - Answer- 5 to 1 What is the nominal strength of wire rope - Answer- The ultimate load at which a tensile failure occurs What is a two leg bridal - Answer- Two wire rope slings attached by a lifting ring Wire rope shall be removed from service if any of the following are present - Answer- Six randomly broken wires in one lay Three randomly broken wires in one strand and one lay Where or scraping of 1/3 the original diameter of outside individual wires Boom extensions and Jibbs are used - Answer- To increase height Capacities above the bold line on the load chart are based on - Answer- Structural strength When is it safe to work under the boom while erecting or dismantling - Answer- Never safe What is the minimum clearance needed between the crane counterweight and any obstacle - Answer- 2 feet When working around powerlines you must - Answer- Never stockpile material under powerlines Maintain the correct distance according to the rated kilovolt Ground the crane with the proper grounding cable When using a crane to pick and carry a load you must - Answer- Tie off the load When using cribbing under your outriggers you should have at least times the total float area covered - Answer- Three times the float area Hydraulic pumps supply to the cranes hydraulic system - Answer- Pressure The minimum distance between the cranes boom and 50 kV high-voltage wires should be - Answer- 10 feet When a spinning load presents a danger the operator should - Answer- Use a tagline Parts of line means - Answer- The number of lines running through the load block The load weight number given in a crane load chart indicator blank that the crane can safely lift - Answer- Gross load A sudden start or stop while operating a crane produces a - Answer- Dynamic load What percent of a cranes rated capacity is it considered a critical lift - Answer- 75% When using hand signals to direct a crane operator an extended arm with the thumb vertical and the fingers opening and closing into a first would indicate - Answer- Raise the boom and lower load Who is responsible to sign and date the cranes daily log book when it is inspected - Answer- Operator Which of these items would not be necessary to check before starting the engine of a crane - Answer- Oil pressure gauge/////Oil going to read zero until the crane is running The boom swing in a crane stopped with what action - Answer- Checking the swing lever in the opposite direction If a jib directed by not being used it is treated as a deduction from the cranes - Answer- Gross capacity What are Jibbs based on - Answer- Structural strength On the majority of conventional cranes the power is transferred to the torque converter by a - Answer- Master clutch During disassembly of a long boom the Haag lines are connected at the maximum cantilever point and the boom is slightly lifted off the ground which pins are to be removed next - Answer- Bottom pins a head of the cantilever point When using load charts what does the term jib angle to the ground refer to - Answer- Main boom angle minus the Jibbs offset A truck crane is rated at what percentage of its load capacity - Answer- 85% On a truck crane with The outriggers extended and set and tires touching the ground the operator should refer to what load chart - Answer- On rubber chart When assembling a crane you can lift the boom sections by rigging the chokers around - Answer- The pin sections Hoist line wire ropes must be discarded if there are broken wires in one strand - Answer- 4////3 is allowed Standing wire ropes must be replaced if they have more than how many broken wires in one strand - Answer- No more than two or one at an and connection Who is responsible for the on job training of the apprentice Oiler - Answer- Operator The safety factor divided by breaking strength of a cable equals - Answer- The safe working load When assembling a crane what precaution can be practiced to reduce strain on the boom - Answer- Keep block on the ground until boom is at 30° A common practice to reduce boom torque is - Answer- Reeve the lines symmetrically The effective weight of a stowed Jib is - Answer- Less than the actual weight Which of the following conditions will dramatically change the values illustrated in the load chart - Answer- Improper Outrigger set up Changing radius Wind gusts Jib back stay in forestay pendants should be - Answer- Of equal length or the back stay pendants slightly longer Blocking may be placed under the tips of the tracks on a crawler crane to - Answer- Increased ability over the front or rear Before arriving at the job site with a crane and sure the cranes blank is adequate - Answer- Set up location If a crane is set up out of level on the swing break is released what action should be expected - Answer- The boom will swing to the low side increasing the radius An abrupt stop of a rapid swing on a long boom crane will produce what major affect - Answer- Possible overturning the crane or collapsing the boom If Highwinds are expected and your lattice boom crane must be secured pointing into the wind and the hook - Answer- secured to a solid structure directly below the boom point During handling where would you attach slings to lift lattice boom sections - Answer- Top pin connection fittings on the main cords On a lattice boom truck crane you measure boom angle - Answer- From the centerline of the loaded boom and the horizontal Manufacturer specifications permit only a certain amount of boom to be suspended our past the connection point of the pendant lines during assembly or disassembly of the boom the portion of the boom suspended in this manner is referred to - Answer- Cantilever length When I lattice boom is being assembled or shortened it is extremely important to - Answer- Drive out all pins from outside the boom A truck crane is operating with his outriggers fully extended and set does not have a fifth front Outrigger the operator should - Answer- Referred to the manufactures working area diagram When I lattice boom crane properly set up on outriggers the tipping access is located at - Answer- Point where the Outrigger pads touch the ground If the lattice boom truck crane is going to perform work over the front and must have - Answer- A front mounted Outrigger How does Highwind affect the operation of a long boom crane - Answer- Introduces a side load into the boom What item can be legally removed from a carry deck crane - Answer- Boom extension A crane component made by crane company can be used on any other crane made by the company - Answer- False