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A set of multiple choice questions and answers related to nccco test #5, focusing on crane operation safety and best practices. It covers various aspects of crane operation, including load capacity, stability, maintenance, and safety procedures. Useful for individuals preparing for the nccco test #5 or those seeking to enhance their knowledge of crane operation.
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When making a multiple crane lift, it is important for the operator to understand that: - correct answer The weight may increase if the other crane lands the load If a crane is not set-up level and the operator swings a load from the high side to the low side, the load radius will: - correct answer Increase Most crane manufacturers reduce load capacity for duty-cycle operations because: - correct answer Side loading forces may occur On who's recommendations should a preventative maintenance program be set-up? - correct answer Crane manufacturer What is the standard rope used on most cranes? - correct answer Right regular lay The proper way to calibrate a boom angle indicator is: - correct answer Using a level, raise the boom to horizontal and set the indicator at 0 degree. The red area of an instrument gauge means: - correct answer A dangerous condition exists The best way to keep people from being injured from the counterweight of the crane is to: - correct answer Fence or barricade the swing area of the crane Only approved attachments or extra counterweights made by the manufacturer should be placed on the rear of the crane because: - correct answer They could cause a backward stability problem What is the first thing an operator should do before going under a low pipe rack? - correct answer Post a signalperson to check clearance When working on outriggers, the only time they should be less than fully extended is when: - correct answer There is a load chart for this operation When lifting loads from the water, the operator should be aware that: - correct answer The load will increase when you pick the load from the water What is require to be on a Hydraulic Crane in order for it to lift a man basket? - correct answer Boom length indicator When working on rubber, cranes are rated at what percentage of tipping? - correct answer 75% When using cable or nylon spreaders, it is important to remember: - correct answer The lower the spreader angle the greater the tension
Backward stability of a crane is tested with: - correct answer Basic boom at maximum angle with maximum load If not listed in the load/capacity charts for a hydraulic crane, and you are in between boom lengths, you should: - correct answer Use the next longer length or shorter with less capacity When a spinning load presents a danger, the operator should: - correct answer Use a tagline The jib capacity is 8 tons and the ball weighs 900 lbs. What is the heaviest load that can be lifted safely? - correct answer 15, Parts of line means: - correct answer The number of lines running thru the load block If a jib is erected but not being used, it is treated as a deduction from the cranes: - correct answer Gross capacity What is the maximum number of broken wires before replacement on a standing wire rope? - correct answer 2 What are most jibs capacities based on? - correct answer Structural On the majority of conventional cranes, the power is transferred to the torque converter by a: - correct answer Master clutch During disassembly of a long boom, the hog lines are connected at the maximum cantilever point and the boom is slightly lifted off the ground. Which pins are to be removed next? - correct answer The bottom pins ahead of the cantilever point When using load/capacity charts, what does the term 'A jib angle to ground' refer to? - correct answer Main boom angle minus the jibs offset A truck crane, with outriggers properly set, is rated at what percentage of its tipping capacity? - correct 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? - correct answer On rubber chart When testing a man basket how long must the test pick be maintained? - correct answer 5 minutes What is the minimum pitch diameter for load hoisting sheaves? - correct answer Not less than 18 times rope diameter
A crane hooks throat open must not exceed: - correct answer % What is the jib offset? - correct answer Jib angle to the boom