NCCCO tower exam 2024 updated Q&A

NCCCO tower exam 2024 updated Q&A When tower crane is erected/dismantled, written instructions must be - CORRECT ANSWER-On site Tower crane erection/dismantling shall be performed under direct supervision of the - CORRECT ANSWER-Designated person What is the minimum clearance from obstruction when the tower crane freely rotates 360•? - CORRECT ANSWER-6 ft 6 in What must the crane operator do when a load is suspended - CORRECT ANSWERRemain at the controls How often should the hoist rope be lubricated? - CORRECT ANSWER-Every 200 hours If block is twisted, it may be necessary to fix the ______________ and make a few empty runs with the hook and trolley and then reopen - CORRECT ANSWER-Twist compensator How many wraps shall be on the drum when the block is at its lowest point - CORRECT ANSWER-3 The radius on a crane chart refers to - CORRECT ANSWER-Center of rotation to center of gravity of load or hook What would cal for a running rope to be taken out of service - CORRECT ANSWER-12 randomly distributed broken wires in one lay or 4 in one strand in one lay maintainence personnel are only permitted to operate crane when - CORRECT ANSWER-Only when performing the maintenance duties Crane must be a minimum of ____ away from power lines up to 50kV - CORRECT ANSWER-10ft How do you determine the size or the mats/blocking needed under tower crane outriggers? - CORRECT ANSWER-Ground bearing capacity of The supporting surface A crane should always be barricaded within - CORRECT ANSWER-The outermost swing radius of the rear of the 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. - CORRECT ANSWER-Periodic What is the weight of steel per cubic foot ? - CORRECT ANSWER-490 lbs If radius is in between On load chart, you should use - CORRECT ANSWER-Next longer radius If the boom angle is in between On The load chart , you should - CORRECT ANSWERUse next lower boom angle Wind blowing on the job site can cause: - CORRECT ANSWER-Increase radius and lower tower crane capacit