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

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NCCCO CORE EXAM (A NEW UPDATED VERSION) LATEST 2024 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% Where should the boom be positioned when beginning a lift? - ANSWER ->Directly over the center of gravity of the load A crane should always be barricaded within? - ANSWER ->The swing radius of the rear of the rotation superstructure counterweight The crane must have a ______ inspection performed both monthly and yearly. This information must be documented by the employer that conducts the inspection. - ANSWER ->Periodic Slings should always be marked with a capacity rate in tag. - ANSWER ->True 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% Setting up a mobile crane with long boom on uneven ground, what support condition should be considered? - ANSWER ->Keeping it 90° between cylinder rod and the pad How should the tires be positioned when setting up a crane on outriggers? - ANSWER ->All tires relieved of the cranes weight or preferably off the ground Who is responsible for determining the weight of the load? - ANSWER ->Lift Director A DOT Medical card normally is good for a period of how many years? - ANSWER ->Two years Upon arriving on site, the lift Director observed ground conditions are not suitable for safe crane operations, they should contact: - ANSWER - >Controlling entity A _______ should decide the rigging points for an engineered lift are appropriate to ensure a safe lift: - ANSWER ->Qualified person The _______Shall ensure a qualified person has been designated lift Director: - ANSWER ->Site supervisor The _______ shall determine powerline proximities: - ANSWER ->Site supervisor 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 The Outrigger pad or float must be secured to the stabilizer - ANSWER ->True Blocking under the outrigger pads is used for what purpose? - ANSWER ->Distribute the weight of the crane and a load over a greater surface area Which of the following statements apply during pick in Carry . - ANSWER ->Keep the boom as short as possible When driving a crane under powerlines in transit, the minimum distance is _______ up to 0.75 KV dot - ANSWER ->4 If the crane does come into contact with powerlines, you should: - ANSWER ->Remain in the cab and try to disengage Crane from contacts If it is necessary to leave the Crane after contact with powerlines before they can be de-energized, you should - ANSWER ->Jump down then slowly shuffle away or take short jumps with feet together Always maintain at least _______ wraps on the drum unless the manufacturer states otherwise. - ANSWER ->2 The rigging on a personal platform must have a _____1 safety factor. - ANSWER ->5 When the load is________ or more of maximum line pole the operator must test the brakes of the crane by lifting the load a few inches in applying the brakes. - ANSWER ->90 The term running wire rope refers to: - ANSWER ->A wire rope that moves over sheaves and drums Defined the term assist Crane - ANSWER ->A crane used to assist in assembling and disassembling a crane What must be done to ensure outriggers are in manufacturers specify position? - ANSWER ->Beam is pinned or marking shows it is correct configuration 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 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 When must a signal person be used in relations to powerline proximity? - ANSWER ->If within boom length of the prohibited zone Wind blowing can cause backward tipping, side load your boom and increase your low radius - ANSWER - >True What can be done to prevent wire rope from unraveling when being cut - ANSWER ->Seizing Ground bearing pressure is: - ANSWER ->The pressure created by the weight of the crane and the load onto the outriggers What is most important when determine the capacity of the jib? - ANSWER ->Angle Running ropes should be removed from service if there are______ randomly distributed broken wires in a lay or______ broken wires in a strand in a lay - ANSWER ->6,3 Rotation resistant ropes should be removed from service if there are______ broken wires and six rope diameters or_____ broken wires in 30 rope diameters - ANSWER ->2,4 According to OSHA, what is the removal criteria for Standard running rope to be taken out of service? - ANSWER ->Six broken wires in a lay Standing ropes should be removed from service if there are more than____ broken wire in a rope Lay at the end connections or more than_____ broken wires in a rope lay Beyond the end connections. - ANSWER ->1,2 What would call for a rotation resistant rope to be taken out of service? - ANSWER ->2 Broken wires and 6 rope diameters OSHA requires a distance be maintained from powerline when the voltage is unknown but under 350 KV - ANSWER ->20 ft What is minimum distance for a crane operations around powerlines up to 50 KV? - ANSWER ->20ft What is minimum distance for a crane operations around powerlines up to 50 KV? - ANSWER ->6 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 Which of the following cannot be done to the hoist line - ANSWER ->Splice the hoist line When directing a crane using voice signals, what must the channel being used to be? - ANSWER - >Dedicated What signal is arm extended to side and thumb pointing to the ground - ANSWER ->Boom down