Advance Rigger Test – Questions And CORRECT ANSWER s
Question : the operational quadrant between the left-or-right-
side outriggers is
CORRECT ANSWER : over-the-side
Question : cranes are typically built to be
CORRECT ANSWER : longer than they are wide
Question : in a multiple-crane lift, the crane with the greatest
net capacity must always be
CORRECT ANSWER : closest to the loads center of gravity
Question : leverage is defined as
CORRECT ANSWER: the power applied to a lever to cause
the load to move
Question : the quadrant that is located between the rear
outriggers or crawlers in the rearward direction of travel is known as
CORRECT ANSWER : over-the-rear
Question : what dynamic occurs when a load is hoisted from a
point other than directly over the load
CORRECT ANSWER : pendulum effect
Question : the sudden release of a load that causes a rapid
change in effective load weight is called
CORRECT ANSWER : acceleration
Question : backward stability of a crane is affected by
CORRECT ANSWER : high boom angles and inclines
Question : a loads center of gravity in relation to the tipping
axis is affected by all of the following except
CORRECT ANSWER : raising or lowering the load
Question : a cranes stability is affected by all of the following
except
CORRECT ANSWER : centered lift
Question : to find the parts of line, the operator
CORRECT ANSWER : divides the suspended weight by the
WLL of the hoist rope
Question : a document that outlines all weight, rigging, and
configuration requirements for a lift is a
CORRECT ANSWER : lift plan
Question : when a bundle of rebar is being lifted with two
slings in a choker hitch, the sling eyes should be threaded in the opposite direction to improve load stability
CORRECT ANSWER : false
Question : adjustable lifting beams are limited by
CORRECT ANSWER : wire rope slings
Question : spreader beams are tested at what percent of their
rated capacity
CORRECT ANSWER : 125
Question : the formula for determining the WLL of a bridle
hitch is
CORRECT ANSWER : WLL = (W)(H/L)(2)
WLL = (one sling in a straight pull)(distance between hook and load/length of sling legs)(2)
Question : a sling angle is considered hazardous if it less than
______ degrees from horizontal
CORRECT ANSWER : 45
Question : doubling the depth of a cribbing beam increases
the WLL by a factor of