Mobile Crane NCCER Study Guide Latest Update 2025-2026 110 Questions and 100% Verified Correct Answers Guaranteed A+
A crane hooks throat opening must not exceed OSHA: - CORRECT ANSWER: 15% of its original size- OSHA
5% of its original size- ASME
A trial lift with unoccupied personnel platform loaded must be: - CORRECT ANSWER: loaded at least with the anticipated weight
All domestic wire rope slings have a safety design lifting factor of: - CORRECT
ANSWER: 5 to 1
Backward stability is tested with - CORRECT ANSWER: Basic boom at maximum angle
with no load
Before a spreader bar or beam can be used, they must be - CORRECT ANSWER:
tested and approaved
By order of strength which is correct - CORRECT ANSWER: Basket, Vertical, Choker
Crane hooks must not be twisted in excess of - CORRECT ANSWER: 10 degrees
Crane hooks must not be twisted in excess of - CORRECT ANSWER: 10 degrees-
OSHA
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- degrees- ASME
Eccentric main boom tip reeving casues - CORRECT ANSWER: twisting of the boom
How does the operator determine if the correct load chart is being used? - CORRECT
ANSWER: Matching serial numbers
How does the operator verify the LMs boom length or load radius reading? - CORRECT
ANSWER: accutal measurements
How is safe working load affected if the lifting hook is loaded off center? - CORRECT
ANSWER: it is decreased
How many broke wires in one strand in one lay of a wire rope slings will make it
necessary to replace the sling? - CORRECT ANSWER: 5
how many broken wires in one strand in one lay of a wire rope will make it necessary to
replace the wire rope - CORRECT ANSWER: 3
How many broken wires must be present in one strand of one lay for running wire rope
to be removed from service? - CORRECT ANSWER: 3
How many randomly broken wires must there be to remove a running wire rope from
service? - CORRECT ANSWER: 6
How many randomly distributed broken wires in one lay of a wire rope sling will make it
necessary to replace the sling - CORRECT ANSWER: 10
If a jib is erected but not being used, it is treated as deduction from the crane's -
CORRECT ANSWER: Gross capacity
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