Exam (elaborations)
NCCCO CORE EXAM QUESTIONS WITH CORRECT ANSWERS
- Course
- Institution
NCCCO CORE EXAM QUESTIONS WITH CORRECT ANSWERS
[Show more]
Content preview
NCCCO CORE EXAM QUESTIONS WITHCORRECT ANSWERS
Before leveling a mobile crane on outriggers, an operator should ensure: - Answer-there
is no weight of the crane bearing on any tires
Operating a mobile crane with a long boom, on uneven ground, what support condition
should be considered? - Answer-Keeping 90 degree angle between cylinder rod and
pad
What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? -
Answer-Separate the boom hoist lines
How many randomly broken wires in a lay length must there be on a mobile cranes
hoist line, before it should be removed from service? - Answer-6
On a mobile crane, how many broken wires are permitted at the end connection of a
pendent before it must be taken out of service? - Answer-1
Type 1 rotation resistant hoist wire rope has a design factor of: - Answer-5 to 1
How many randomly distributed broken wires in rotation- resistant hoist wire rope are
considered for replacement? - Answer-2 broken wires in 6 rope diameters
The term net capacity is best defined by which of the terms listed below? - Answer-
Gross capacity minus capacity deductions
Mobile cranes that are set up on barges, shall have a list chart provided by which of the
entities listed below? - Answer-Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage of tipping? -
Answer-75%
How does the effective weight of a slowed extension relate to the actual weight of the
extension? - Answer-Higher than the actual weight.
When load radius is between radii values, the operator must use the: - Answer-longer
radius
Why should only approved attachments or extra counterweights provided by the
manufacturer be placed on the rear of the crane? - Answer-They could cause a
backward stability problem.
A mobile crane's jib is offset 15º versus its original 0º offset, but the boom angle
remains unchanged. In this situation, the load radius: - Answer-increases
, Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major
effect? - Answer-Collapsing the boom.
When determining the position to a mobile crane should be left in over night, when high
winds in the forecast the operator should: - Answer-Follow the manufacturers
recommendations.
If a mobile crane is NOT set-up level and the operator swings the load from the high
side to the low side, what effect will that have on the radius? - Answer-The radius
increase.
Increasing the distance from the crane's center of gravity to the tipping axis will have
what effect on the mobile crane? - Answer-Decreases stability.
Backward stability of a mobile crane is tested in which configuration listed below? -
Answer-Basic boom at minimum angle with no load
Deflection of the boom while operating a mobile crane will increase? - Answer-Load
Radius (Swings out)
A sudden start or stop of the hoisting function while operating a mobile crane can
produce a: - Answer-dynamic load
Before lifting an occupied personnel platform on a job site, which of the following
applies? - Answer-Use 50% of rated capacity, Trial lift to anticipated weight, Ensure
rigging dedicated to platform only.
According to OSHA 1926. 1431, while hoisting a personnel platform, what weather
condition listed below will promptly discontinue the operation? - Answer-Dangerous
If working near overhead power line and using a tag line, which type of rope is least
conductive to electricity? - Answer-Polypropylene
When working near power lines with the mobile crane, where does OSHA require
caution stickers be installed on all equipment? - Answer-At operators station and 2 on
the outside of the equipment.
According to OSHA table T, what is the minimum clearance for 133kV power lines? -
Answer-10ft
According to OSHA's table T, what clearance should a mobile crane IN TRANSIT keep
while going under 445kV lines? - Answer-16ft
According to OSHA when is it safe to hoist loads with a mobile crane below energized
power lines? - Answer-When the fully extended boom can't reach the prohibited zone.
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 biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now