Mobile Crane Questions Test #3 Questions and Answers 100% Verified
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Mobile Crane Operator
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Mobile Crane Operator
Mobile Crane Questions Test #3 Questions and Answers 100% VerifiedMobile Crane Questions Test #3 Questions and Answers 100% VerifiedMobile Crane Questions Test #3 Questions and Answers 100% VerifiedMobile Crane Questions Test #3 Questions and Answers 100% VerifiedMobile Crane Questions Test #3 Ques...
Mobile Crane Questions Test #3
Questions and Answers 100%
Verified
The crane is out of level, you release the swing brake, the boom swings downhill,
your: - ANSWER - Load radius increases.
Blocking can be placed under the ends of tracks to: - ANSWER - Increase the crane's
stability when operating over the front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler? -
ANSWER - Side.
On lattice boom cranes fitted with power load lowering, a heavy load should be
lowered by using the: - ANSWER - Powerload-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long boom mobile crane will produce what
major effect? - ANSWER - Overturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be
expected? - ANSWER - The boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: -
ANSWER - Center of the boom heel pins to the center of the boom tip sheave.
You can't level your crawler crane: - ANSWER - Don't operate the crane.
What effect does having the crawlers retracted have on a crawler crane with a long
boom? - ANSWER - Decrease in capacity.
, During assembly, where should you attach slings to lift boom sections? - ANSWER -
End fittings.
Which boom configuration can cause the most hazardous boom side-loading
condition? - ANSWER - Long boom with minimum radius.
When is it safe to handle loads under power lines? - ANSWER - The load nor any part
of the crane can come closer than regulations allow.
Your crawler crane is on a barge, it is necessary to: - ANSWER - Secure the crane to
the barge.
A pin-connected lattice boom is being dismantled. After connecting the equalizer
(bridle) to the connecting lugs on the boom, which boom connecting pins should be
removed first? - ANSWER - Lower connection pins, located at and ahead of the
equalizer.
When using a mobile crane on a barge, the crane's load capacity chart shall be: -
ANSWER - Replaced by a list chart.
How many broken wires are permitted at the end connection of a pendant before it
must be taken out of service? - ANSWER - 1.
If high winds are expected and the lattice boom crane must be secured pointing into
the wind, then the hook should be: - ANSWER - Secured to a solid structure directly
below the boom point.
When assembling a lattice boom on most crawler cranes using inserts of different
lengths, which insert section generally should be closest to the boom foot? -
ANSWER - 10 ft.
On a lattice boom truck crane, boom angle is measured between the center-line of
the: - ANSWER - Loaded boom and the horizontal.
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