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NCCCO tower exam 7.2024 questions with correct answers
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NCCCO tower exam 7.2024 questionswith correct answers
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 answer>> Remain 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
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