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NCCCO Lattice Boom General Knowledge EXAM QUESTIONS AND ANSWERS 100 % PASS A+ GRADE
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NCCCO Lattice Boom General Knowledge EXAM QUESTIONS AND ANSWERS 100 % PASS A+ GRADE
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NCCCO Lattice Boom General Knowledge EXAM 2024-2025QUESTIONS AND ANSWERS 100 % PASS A+ GRADE
What type of capacity is listed on a crane load chart? - answer>>Static
Lattice boom cranes manufactured after 2-28-92 must have which safety device
installed? - answer>>Anti-two block warning device
The lattice boom is designed to take winds of up to 20 mph. from the side plus a
full rated load, plus a direct side load equal to what percent of the rated load? -
answer>>2%
Lattice boom cranes manufactured after 11-8-2011 must have which safety device
installed - answer>>Anti-two block prevention device
What is the main purpose of a jib/extension? - answer>>To extend reach higher
or up and over
When the number of layers of rope on a drum increase the line pull___________.
- answer>>Decreases
When handling boom sections, the best place for slings to be attached is; -
answer>>At the pin connections at the ends of the top chords
If you move a crawler crane from soft ground to hard ground, ground bearing
pressure will; - answer>>Increase
, What is the minimum design factor required for a pendants or standing ropes
shall not be less than? - answer>>3.0
Live or running ropes used in boom erection conditions the design factor shall not
be less than? - answer>>3.0
Standing ropes or pendant lines used in boom erection conditions the design
factor shall not be less than? - answer>>2.5
D to d ratio means what? - answer>>Sheave diameter or Pitch diameter divided
by wire rope diameter
What is the meaning of Controlled load lowering? - answer>>Use of a mechanical
hoist drum device that allows a hoisted load to be lowered with maximum control
using the gear train or hydraulic components of the hoist mechanism.
The part of the load chart governed by stability is based on what percentage of
capacity while a crawler crane is working over the side quadrant? - answer>>A.
75%
The most unstable working quadrant for a crawler crane is the; - answer>>Side
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