NCCCO CORE EXAM – 163 QUESTIONS WITH VERIFIED SOLUTIONS ALREADY GRADED A+

Which of the following is an accurate statement about luffing jibs? It raises and lowers independent from the boom What is the weakest quadrant of a boom truck? Front Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full screen What effect would blocking up the ends of the tracks have on a crane? It would increase capacity over the ends The tipping axis of a crawler crane is? 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? 100% From strongest to weakest put the following hitches in order Basket, vertical, choker Which of the following should synthetic slings not be used around? Acid How often should you inspect a running rope? Daily The radius on a crane chart refers to? 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? 85% What percentage is the manufacture rated capacity of a rough terrain crane on rubber? 75% What is Lay length? The distance required for a strand to make a complete revolution around the rope What is one problem lubricating wire rope can cause? Obstructed view when inspecting the rope What would What would call for a running rope to be taken out of service? Six randomly distributed broken wires and one Lay or three in one strand and one lay Which of these is known as a standing rope? Pendant line If you are at a radius below the bold line on a load chart, which does that mean? Tipping, stability To lift personnel, he must have an anti-two block on the crane? True The personal platform must be proof tested to _________ Of the platforms rated capacity 125% The crane must be D rated ______ To lift personnel 50% When lifting personnel, how should the rigging be a attached to the hook? With master link When using wire rope slings, the eye of the slings shall have? Thimbles The crane operator should respond to the stop signal from anyone True On a rough terrain crane what is the strongest quadrant? Front If an operator does not boom up to allow for a boom deflection, the load will? Move away from the Crane Where should the boom be positioned when beginning a lift? Directly over the center of gravity of the load A crane should always be barricaded within? 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. Periodic Slings should always be marked with a capacity rate in tag. True The wire rope clip on a wedge socket Should always attached to the _______ Of the Crane. Dead end It is possible for a crane to be overloaded with no signs of tipping. 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. 2,4 In order to operate a mobile crane on a barge, you must have List and trim capacity chart When lifting a load out of the water, the load will be come ________ When it breaks the surface Heavier What must be done when operating on a barge? Attach the crane to the barge Mobile crane is more stable when: The cranes leverage is greater than the load leverage As a crane tips the loads leverage Increases What should be done if a crane has a cracked windshield? Continue to operate if it causes no visible distortion On a truck crane or all-terrain crane, the strongest quadrant is normally the? Rear If boom links are in between on the load chart you should always: Use lowest capacity of the next longer or shorter boom length If radius is in between on load chart, you should use: Next longer radius If the boom angle is in between on the load chart, you should: Use next lower boom angle Net capacity equals: Gross capacity minus all deductions When is the Hoist rope consider a deduction? All the above A Crane must be within _____ of level for the load chart to apply. 1% Traveling down a hill with a load will _____ radius Increase During a pick and carry Which of the following would apply? Boom in line with direction of travel According to 1926.1431, at what windspeed must a qualified person be consulted? 20 miles an hour Sudden stops dynamic Loading can cause the load to________ Increase