NCCER Turner Recertification TEST Exam Questions with Correct Answers
6 views 0 purchase
Course
Nccer mobile crane
Institution
Nccer Mobile Crane
When the crane is over-the side, over-the-front, or over-the rear configurations, the center of gravity ids shifted either close or farther away from the? - Answer-Tipping axis (point)
When the crane is over-the side, over-the-front, or over-the rear configurations, the center of gravity its shi...
NCCER Turner Recertification TEST
Exam Questions with Correct Answers
When the crane is over-the side, over-the-front, or over-the rear configurations, the
center of gravity ids shifted either close or farther away from the? - Answer-Tipping axis
(point)
When the crane is over-the side, over-the-front, or over-the rear configurations, the
center of gravity its shifted either close or farther away from the tipping axis (point); this
in turn may? - Answer-Increase or decrease the crane's leverage
What is the crane weight x horizontal distance from the center of gravity of the crane to
the tipping axis? - Answer-Crane's leverage
A crane's leverages (crane weight x horizontal distance from the center of gravity of the
crane to the tipping axis) has to be greater than the? - Answer-Load's average (load
weight x horizontal distance from the center of gravity of the load to the tipping axis) to
make a lift
What is the load weight x horizontal distance from the center of gravity of the load to the
tipping axis? - Answer-Load's leverage
A crane's leverages (crane weight x horizontal distance from the center of gravity of the
crane to the tipping axis) has to be greater than the load's average (load weight x
horizontal distance from the center of gravity of the load to the tipping axis) to make a
lift. If it isn't then ___ occurs? - Answer-Tipping
The crane manufacturer designs a ___ chart for each model that is sold? - Answer-
Load/capacity
The load/capacity chart for each model crane may even be ___ specific? - Answer-
Serial-number
The load/capacity chart for each model crane may even be serial-number specific,
meaning a? - Answer-Different load/capacity chart is required for each crane, even if a
manufacturer only make one model
What will bear the model number and serial number or other identifier (the part number,
for ex) of the crane to which it applies? - Answer-Load/capacity chart
What cranes can be truck mounted or crawler mounted? - Answer-Lattice boom cranes
What cranes have hydraulic counterparts? - Answer-Lattice boom cranes
, Lattice boom cranes have hydraulic counterparts, and these cranes are capable of
much longer? - Answer-Boom lengths
A crane may be ___ before any signs of tipping are evident? - Answer-Overloaded
A crane an be ___ before tipping occurs? - Answer-Overstressed or can fail structurally
The capacities on a load/capacity chart are limited by either the? - Answer--structural
strength of the crane (as determined by ANSI/SAE J987 guidelines)
-stability (the crane's ability to resist tipping)
What is the crane's ability to resist tipping? - Answer-Stability
The load/capacity charts of mobile cranes are based on the configuration of the crane at
the time of the? - Answer-Lift
Capacities on-outriggers? - Answer-Do not exceed 85%
Capacities on rubber? - Answer-Do not exceed 75%
What is a side view of a crane with its full range of boom lengths, jibs, and boom
extensions? - Answer-Range diagram
A crane's leverage is determined by? - Answer-The crane weight times the horizontal
distance from the crane's center of gravity to the tipping axis
The least capacity of a typical truck-mounted crane w/o a forward outrigger occurs when
the tipping axis is? - Answer-Over the front of the crane
Rough-terrain cranes are designed to be? - Answer-Operated w/in 1% of level on a firm,
supporting surface
Site preparation and crane erection take the most time for ___ cranes? - Answer-Lattice
boom
Boom lengths does not include the length of the jib- true of false? - Answer-True
The maximum horizontal distance from a projection of the axis of rotation to the center
of the vertical hoist line or tackle w/ load applied for the given boom length, angle, and
operating quadrant is the? - Answer-Load operating radius
According to ASME B30.5, a load rating chart must include? - Answer-Work areas and
load rating where no loads are permitted to be handled
A crane can? - Answer-Be overloaded before any signs o tipping are evident
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lectknancy. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
