Working radius is defined as the distance from? - ANSWERCenter of rotation of the crane to the center of gravity of the load
At what percentage of tipping are truck mounted cranes on outriggers which are fully extended and set rated? - ANSWER85%
What is the definition of boom length? - ANSWER...
Working radius is defined as the distance from? - ANSWERCenter of rotation of the crane to the
center of gravity of the load
At what percentage of tipping are truck mounted cranes on outriggers which are fully extended and
set rated? - ANSWER85%
What is the definition of boom length? - ANSWERCenter of boom heel pin or foot pin to the center of
the boom tip sheave
On a standing rope How many wires need to be broken at an end connection before replacing -
ANSWER2
According to ASME B30.5 mobile crane standard, how many randomly distributed broken wires in
rotation resistant rope is cause for considering replacement of the rope? - ANSWER2 broken wires in
6 rope diameters
Wire rope clips used in conjunction with wedge sockets must be attached to what? - ANSWERThe
dead end of the rope
The most common hoist rope in general use is? - ANSWERRight regular lay
Where is the center of rotation of a crane located? - ANSWERThrough the center of the swing circle
On a standard running rope how many randomly distributed broken wires in one strand is cause for
considering replacement? - ANSWERThree broken wires in one strand in one lay
How often should all running ropes in-service be visually inspected? - ANSWEROnce each working
day
The lay length of a wire rope is defined as what? - ANSWERDistance it takes for one strand to make a
complete revolution
, Greater tension is exerted on slings attached at? - ANSWERLow angles
What is the correct procedure when placing a shackle on a crane hook? - ANSWERPlace the shackle
pin in the hook
Which hitch provides the greatest lifting capacity? - ANSWERBasket hitch
It is time to replace wire rope when what diameter of outside wires is worn away? - ANSWER1/3
Never use a fiber core wire rope when working temperatures exceed what? - ANSWER180°
Which type core provides the maximum flexibility to wire rope? - ANSWERFiber core
Which of the following is classified as a standing rope? - ANSWERPendant lines
The dead end of a standard running rope above the wedge socket must extend a minimum of six
times the rope diameter or? - ANSWER6 inches
What is boom stops limit? - ANSWERAngle of Boone at highest position
Wire rope lubrication should be of a type that will? - ANSWERNot hinder visual inspection
What type of inspection is required to be given by a qualified person for a crane which has been idle
for a period of one month or more, but less than six months? - ANSWERFrequent
How often should you grease crane sheaves? - ANSWERAccording to the manufacturers
specifications
What does the term two blocking mean? - ANSWERWhen the load handling device makes contact
with upper sheaves
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