NCCCO Core Exam: Questions and Answers for Crane Operators, Exams of Construction

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NCCCO CORE EXAM (A NEW UPDATED VERSION) LATEST 2024-2025 ACTUAL QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS) GUARANTEED PASS A+ (REAL EXAM) Which of the following is an accurate statement about luffing jibs? - ANSWER ->It raises and lowers independent from the boom What is the weakest quadrant of a boom truck? - ANSWER ->Front What effect would blocking up the ends of the tracks have on a crane? - ANSWER ->It would increase capacity over the ends The tipping axis of a crawler crane is? - ANSWER ->It depends if the idler or sprocket are offset from track rollers According to ASME B30.5 what percentage should not be exceeded on a mobile crane during a load test? - ANSWER ->100% From strongest to weakest put the following hitches in order - ANSWER ->Basket, vertical, choker Which of the following should synthetic slings not be used around? - ANSWER ->Acid How often should you inspect a running rope? - ANSWER ->Daily The radius on a crane chart refers to? - ANSWER ->Center of rotation to center of gravity of the load or hook What percentage is the manufacture rate of capacity of a mobile crane on outriggers? - ANSWER ->85% What percentage is the manufacture rated capacity of a rough terrain crane on rubber? - ANSWER ->75% What is Lay length? - ANSWER ->The distance required for a strand to make a complete revolution around the rope What is one problem lubricating wire rope can cause? - ANSWER ->Obstructed view when inspecting the rope What would What would call for a running rope to be taken out of service? - ANSWER ->Six randomly The wire rope clip on a wedge socket Should always attached to the _______ Of the Crane. - ANSWER ->Dead end It is possible for a crane to be overloaded with no signs of tipping. - ANSWER ->True In rotation resistant ropes if you have ______ broken wires and six rope diameter or _______ broken wires and 30 rope diameters, the rope must be removed from service. - ANSWER ->2,4 In order to operate a mobile crane on a barge, you must have - ANSWER ->List and trim capacity chart When lifting a load out of the water, the load will be come ________ When it breaks the surface - ANSWER - >Heavier What must be done when operating on a barge? - ANSWER ->Attach the crane to the barge Mobile crane is more stable when: - ANSWER ->The cranes leverage is greater than the load leverage As a crane tips the loads leverage - ANSWER ->Increases What should be done if a crane has a cracked windshield? - ANSWER ->Continue to operate if it causes no visible distortion On a truck crane or all-terrain crane, the strongest quadrant is normally the? - ANSWER ->Rear If boom links are in between on the load chart you should always: - ANSWER ->Use lowest capacity of the next longer or shorter boom length If radius is in between on load chart, you should use: - ANSWER ->Next longer radius If the boom angle is in between on the load chart, you should: - ANSWER ->Use next lower boom angle Net capacity equals: - ANSWER ->Gross capacity minus all deductions When is the Hoist rope consider a deduction? - ANSWER ->All the above A Crane must be within _____ of level for the load chart to apply. - ANSWER ->1% Traveling down a hill with a load will _____ radius - ANSWER ->Increase During a pick and carry Which of the following would apply? - ANSWER ->Boom in line with direction of travel According to 1926.1431, at what windspeed must a qualified person be consulted? - ANSWER ->20 miles an hour Sudden stops dynamic Loading can cause the load to________ - ANSWER ->Increase For duty cycle operations like pouring concrete, hanging steel, etc. most manufacturers usually downrate the crane________. - ANSWER ->20% A _________Inspection is the responsibility of the crane operator. - ANSWER ->Frequent Hoist lines should be replaced when there is more than a _____ Reduction in the normal diameter of the rope. - ANSWER ->5% When is it OK to use a swivel on rotation resistant wire rope? - ANSWER ->If manufacturer approves What should be done by the crane operator if the LMI malfunctions? - ANSWER ->Stop crane operations and report it to the supervisor Can a cranes lifting capacity be lower than its net capacity? - ANSWER ->Yes What should be done if the operator cannot see the outriggers for extension? - ANSWER ->Use a signal person Name The three ways that two blocking can occur? - ANSWER ->extending boom, hoisting or lowering the boom According to ASME Be 30.5 where should a portable fire extinguisher shall be installed? - ANSWER ->In the cab or at the machinery housing Where should the tools be kept on a crane when they're not being used? - ANSWER ->Toolbox When replacing a wire rope on a crane you should always come off the: - ANSWER ->Top of the reel to the top of the drum To prevent wire rope from coming off the drum, the flange must remain at least _____ inches above the top layer - ANSWER ->1/2 The term superstructure or upper works referred to: - ANSWER ->Above the turntable Which of the following will increase the capacity of the crane? - ANSWER ->Boom up What can be used to determine approximately distance for planning a lift or determined tip elevations? - ANSWER ->Range diagram Where should the electrocution decals be placed on the crane ? - ANSWER ->In the cab and on both sides of the crane According to OSHA 1926.1433, what should be on the crane? - ANSWER ->Fire extinguisher The term backward stability means: - ANSWER ->The Crane's ability to resist overturning backward Which of the following would create the most concern for backwards stability? - ANSWER ->Fully retracted outriggers swung over the side Which of the following would create the most concern for backwards debility? - ANSWER ->Low boom angle What is the most important factor when determining the capacity of the jib ? - ANSWER ->Angle When is it OK to side load the boom of the Crane? - ANSWER ->Only when freely suspended loads On a boom truck, what is the normally the strongest quadrant? - ANSWER ->Rear What is a temporary alternative measure if the anti-two block is not functioning properly? - ANSWER ->Report the deficiency to your supervisor and mark the cable When should the crane operator check operational aids? - ANSWER ->Daily The crane must be equipped with an audible signal device horn - ANSWER ->True Frequently inspections are daily to monthly and periodic inspections are monthly to yearly - ANSWER ->True If all devices are locked down on the crane it is OK for personnel to pass under the load - ANSWER ->False When traveling a mobile crane with two cabs the following short audible signals shall be used - ANSWER - >One stop, to go ahead, three back up Define gross capacity - ANSWER ->The capacity listed on the load chart for the configuration The capacity of the Crane will _______When counterweight is added - ANSWER ->Increase On a Telescoping mobile crane, extending the crawlers tracks will ______ The capacity - ANSWER ->Increase If the LMI on a mobile crane has shut down functions in an overload condition, what functions are you able to use - ANSWER ->Boom up, lower load, retract boom In order to check the fluid level on a hydraulic crane, the boom should be? - ANSWER ->Fully retracted and lowered Hooks should be removed from service if there is ______ twist - ANSWER ->Any Hooks should be removed from service if anywhere exceeds _______ of the original section dimension or as recommended by the manufacturer - ANSWER ->10% Hooks should be removed from service if any increase in the throat opening exceeds ________ or as recommended by the manufacturer - ANSWER ->5% In order to make sure the correct load chart is being used you should always go by there? - ANSWER ->Serial# On a mobile crane, the capacity can be increased by - ANSWER ->Booming up The boom angle on telescoping boom crane is ________After the load is lifted - ANSWER ->Angle between bottom of the base boom and horizontal The boom angle on lattice boom crane is ________ After the load is lifted - ANSWER ->Angle between centerline of boom and horizontal You should always extend boom sections equally unless the manufacturer states otherwise? - ANSWER ->True The big section being extended further would cause what? - ANSWER ->Tipping The smaller section being extended further would cause what? - ANSWER ->Structural damage What is accurate when measuring boom length? - ANSWER ->Measure from hinge pin to center of the boom tip sheaves When setting up a crane equipped with a front stabilizer, the front stabilizer should be put down _____. - ANSWER ->Last Net capacity is determined by: - ANSWER ->Gross capacity minus all deductions Which of the following would cause the load to be more stable? - ANSWER ->Rigging above the center of gravity The site supervisor and the lift Director can be the same person? - ANSWER ->True No lift must be made on the cranes other hoist when hoisted personnel - ANSWER ->True If the cranes operator does not recognize the signal, the operator should - ANSWER ->Stop When lifting a load over the side, the crane operator should use the_______ Chart - ANSWER ->360 degrees chart If using a 1 inch wire rope sling to basket around a 4 inch pipe. What is the DD ratio used for determine how much capacity can be lost - ANSWER ->4/1 What is the minimum distance for a crane operations around the powerline up to 50 KV? - ANSWER ->10 ft What is the minimum distance around powerlines with the boom and transit position while driving under powerlines? - ANSWER ->4 ft What is the minimum distance for a crane operations around powerlines that are 720 KV? - ANSWER ->35 ft What is the minimum distance around powerlines with boom in transit position while driving under power lines and voltage is 350 KV - ANSWER ->16 ft What is the minimum distance for crane operations around powerlines that are 150 KV? - ANSWER ->15 ft What is the minimum distance around powerlines with boom in transit positions while driving under powerlines if voltage is 40 KV? - ANSWER ->6 ft What is the minimum distance for crane operations around powerlines that are 800 KV? - ANSWER ->45 ft What is the minimum distance around powerlines with boom in transit position while driving under powerlines in voltage is 150 KV? - ANSWER ->10 ft When should blocking be used under the outrigger pads of the crane? - ANSWER ->When the support surface will not support the crane and load What will happen to the ground bearing pressure if you move a crawler crane from soft ground to harder ground? - ANSWER ->It increases When Can the LMI or overload warning system of a crane be bypassed? - ANSWER ->Only during assembly and disassembly Who is not allowed in the fall zone according to OSHA 1926 sub part cc? - ANSWER ->Qualified rigger What is the function of a holding valve? - ANSWER - >Prevents loads on cylinders from dropping and uncontrolled manner What is the maximum angle allowed between two slings on a hook? - ANSWER ->90 What is the maximum angle allowed between two slings in a shackle? - ANSWER ->120 What is the angle allowed to horizontal between two slings on a hook - ANSWER ->45 What is the angle allowed to horizontal between two slings in a shackle - ANSWER ->30 Where can you find the standard hand signals for mobile crane operation? - ANSWER ->OSHA subpart CC