NCCCO Core Prep Test 2 Exam Questions and Answers

What is the purpose of installing an auxiliary boom point sheave to the main boom tip? Separate hoist lines A designated Lift Director shall be assigned by the ______? Site Supervisor Who is responsible for calculating net capacity? Crane Operator Who is responsible for ensuring all rigging is supervised by a Qualified Rigger? Site Supervisor/ Lift Director Who is responsible for ensuring the crane owner is notified of any damage to the crane or replacement/repair of wire rope? Crane User Who is responsible for restricting unauthorized access to the crane's work area? Site Supervisor/Lift Director Who is responsible for ensuring the crane owner is notified of any damage to the crane or replacement/repair of wire rope? Crane User Who is responsible for ensuring crane operations are stopped if alerted to an unsafe condition? Lift Director If the operator or A/D determine that ground conditions are not suitable for the equipment being operated, they should request the _________ correct the issue Controlling Entity Who is responsible for ensuring that personnel involved in crane operations understand their responsibilities, assigned duties and associated hazards? Lift Director When can the operator of a crane set the crane up with less than fully extended outriggers? When the load chart allows The outrigger pad and cribbing should be strong enough to support? The total weight of the crane and the load What must be known prior to setting up your crane? Location of underground vaults What is the minimum distance the flange on the hoist drum should extend above the last wrap of rope? ½ inch Eccentric main boom tip reeving will Twisting of the boom What is the most common wire rope used on most cranes? Right regular lay Prior to leveling a crane what should be done with the outrigger jack? Secure the float pad to jack cylinder What three functions will not work after two-blocking a crane that has a prevention system? Boom down, extend the boom and hoist Boom angle on a telescoping boom is measured from above or below horizontal to the _________? Longitudinal axis of the boom base section The line pull of the innermost layer on the hoist drum is __________than the outermost layer. Greater Side loading of a crane can be caused by? Wind If power fails to the crane what must the operator ensure is done? The controls are put in the neutral position On a multiple crane lift, do not exceed _______ of the load chart. 75% If a crane operator knows the boom length and the boom angle he could use the range diagram to estimate what? Load radius Which of the following jib offsets will have the least amount of capacity? 30 degrees When is it okay to make modifications to the structure of the crane's upper works? With written permission from the manufacturer A sudden stop of the hoist on a crane will produce a what? Dynamic load When hoisting personnel from a crane, what must be on the crane? Anti-two block device What grade of alloy steel chain should be used for hoisting slings? 80 Each time a line passes from the boom point to the load block it is considered a _________? Part of line Which statement about sling angles is correct? As sling angle decreases, sling stress increases When installing a wedge socket end termination on the crane the live section of the rope should be in line with the? Pin Which of the following hitches would be best suited for lifting a bundle of items? Double wrapped choker If the signal person extends his arm at shoulder height with his thumb pointing down what do they want the operator to do? Boom down If the signal person has their arm extended and is pointing to his/her left, what do they want you to do? Swing right Why is a carry deck crane, called a carry deck? The deck of the crane has carrying capacities How much clearance is required between the counterweight of the crane and all objects? 2 ft. Which of the following would be good ground conditions for setting up a crane? Compacted and level When using a carpenter's level to check the level condition of the crane, where would be the best location to put the level? Swing bearing of the upper works What is the advantage to placing mats or cribbing under the outrigger floats? Lowers the ground pressure applied by the crane When operating a crane within 100 feet of water what degree of level should your crane be? .57 degrees When is it ok to place blocking under the outrigger beams of a crane? Never What is the purpose of installing a auxiliary boom point sheave to the main boom tip? Separate hoist lines Which of the following is considered standing rope? Pendant line How many broken wires are allowed in one strand of one lay of standard wire rope? 3 The lubricant used for wire rope should be of what type? That does not hinder visual inspection How often should the crane operator inspect standard running wire rope? Every shift (When in use) How many broken wires are allowed on 30 diameters of EEIPS rotation resistant wire rope? 4 With the boom at its highest angle and its shortest radius, how many wraps of wire rope need to be on the drum at all times? 2 When measuring load radius of the crane. You measure from the axis of rotation of the crane to the_____? Center of gravity of the load What must be deducted from the gross capacity of the crane when the jib is erected, but not in use? Effective weight Where can tip height be found? Range diagram The Net Capacity of the crane is? Gross capacity minus all applicable deductions When booming down with a jib/extension erected the effective weight of the jib_____? Increases When using a crane in a duty cycle operation manufacturers usually de-rate the cranes capacity by? 20% How would the operator of the crane know if the radius on the LMI is correct? By measuring According to OSHA, each series of voice signals contain how many elements? 3 What is the first element of voice signals given to a crane operator prior to the lift? Function and direction When working within the boom's length of energized power lines what is required? A dedicated spotter to maintain safe clearances What is the first thing the operator should do if the crane comes in contact with an energized power line? Remain in the cab until power line is de-energized The weight deduction for a stowed jib is _______? The effective weight If the boom angle of the crane falls between values on the load chart you should use? The lower angle What is the most common type of wire rope used on a crane? Right regular lay According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line over 200 KV is? 20 ft. When lifting from a jib/extension and the main boom is not fully extended. What information must you use to get the gross capacity from the load chart? Main boom angle According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line up to 50 KV is? 10 ft. According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line at 100 KV is? 15 ft. According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line over 350 KV is? 25 ft. According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line over 500 KV is? 35 ft. According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line at 750 KV is? 35 ft. According to Table A of OSHA 1926.1408 the minimum clearance distance for a power line at 1000 KV is? 45 ft. If carrying a load on a downward slope, the radius will ____? Increase If carrying a load on an upward slope, the radius will ____? Decrease When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? 1% What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection? It could swing out away from the crane Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? The front What is the definition of "operating radius?" The distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on a load chart? They are based on the stability of the crane In which quadrant are rough terrain crane capacities generally greater? Over the front According to federal requirements, under what conditions is it okay for a person to ride the headache ball? It is never okay By what percentage do most manufacturers require a crane's load chart capacity to be reduced by for duty cycle operations such as high-volume concrete placement? 20% What is the preferred method of installing wire rope from a reel onto a hoist drum? The rope runs from the top of the reel to the top of the drum Over which quadrant are truck crane capacities usually greater? Over the rear According to OSHA, which accessible area of an operating crane must always be barricaded? The swing radius of the rear of the rotating superstructure What is the OSHA regulation governing cranes in construction? 1926.1400 Under which circumstance is a crack in the windshield of a crane cab okay? As long as it causes no visible distortion that would interfere with safe operations Under which circumstance does OSHA permits hoisting of personnel by crane? As long as there is no less hazardous or practicable way Unless the manufacturer states otherwise, what crane capacity chart is appropriate when a crane is set up with 3 of its 4 outriggers extended and the fourth is retracted? On-rubber chart According to OSHA, while hoisting personnel, the total load must not exceed what percentage of the crane's rated capacity?" 50% When is side loading of crane booms permitted? Only with freely suspended loads What is indicated if an operator makes two audible signals when moving a crane? He/she intends to go ahead What is the result of placing timber blocking under the tips of the tracks on a crawler crane? Makes the crane more stable According to ASME, what percentage of the manufacturer's crane rating must not be exceeded if a load test is done on a repaired crane? 110% What should be done with materials placed under overhead energized power lines? Not be lifted by crane Where should the crane's outrigger pads or tracks be placed when working at ground floor level near a cellar wall? At least as far back as the depth of the wall below ground What happens to ground bearing pressure if you move a crawler crane from soft ground to harder ground? It increases Where are the Standard Method hand signals found? OSHA Subpart CC Appendix A What happens to the leverage of the load on a crane as the boom is being lowered? It increases When is it okay to temporarily bypass a crane's overload warning system? During assembly/disassembly operations