NCCCO MOBILE CRANE (ACTUAL 2025)
QUESTIONS WITH CORRECT VERIFIED
ANSWERS
26. When may blocking (cribbing) be placed under outrigger
beams?
a. When beams cannot be extended all the way out
b. To increase capacity
c. To improve stability
d. Never
d.
27. What is the result of placing timber blocking under the
tips of the tracks on a crawler crane?
a. Decreases the permitted capacity of the crane
b. Makes the crane more stable
c. Reduces the capacity of the crane
d. Makes the crane less stable
b.
,28. According to ASME, what percentage of the
manufacturer's crane rating must not be exceeded if a load test
is done on a repaired crane?
a. 110%
b. 100%
c. 85%
d. 75%
b.
29. Where is the tipping axis of a crawler crane located?
a. It is always at the centerline of the idler or sprocket
b. It depends if the idler or sprocket are in line or offset from
the track rollers
c. It is through the centerline of the crane cab
d. It is through the boom butt section
b.
A long boom crane at a short radius and out of level by 300
can see a reduction incapacity by as much as:
50%
Crane stability is based on
lever principle
,What is the OSHA standard for cranes in construction
industry?
29 CFR-1926. Subpart CC
What are the requirements to be a crane inspector?
Same as operator
What percentage of the crane chart is considered a critical lift?
75%
A multi crane lift shall require
Critical lift plan, reduction of gross capacity by 25% and one
designated person in charge.
When doing a pick and carry, tire pressure must
meet manufacturer's specifications
, The load chart is matched to the crane by:
Serial number
Where do you find recommended reeving for the hoist lines?
Owner's manual
Not extending telescoping boom sections equally; what may
occur?
Longer section collapse
What are the broken wire removal requirements for rotation
resistant wire rope?
2 broken wires in 6 diameters or 4 in 30 diameters
How should wire rope be inspected during a frequent
inspection?
Visually
QUESTIONS WITH CORRECT VERIFIED
ANSWERS
26. When may blocking (cribbing) be placed under outrigger
beams?
a. When beams cannot be extended all the way out
b. To increase capacity
c. To improve stability
d. Never
d.
27. What is the result of placing timber blocking under the
tips of the tracks on a crawler crane?
a. Decreases the permitted capacity of the crane
b. Makes the crane more stable
c. Reduces the capacity of the crane
d. Makes the crane less stable
b.
,28. According to ASME, what percentage of the
manufacturer's crane rating must not be exceeded if a load test
is done on a repaired crane?
a. 110%
b. 100%
c. 85%
d. 75%
b.
29. Where is the tipping axis of a crawler crane located?
a. It is always at the centerline of the idler or sprocket
b. It depends if the idler or sprocket are in line or offset from
the track rollers
c. It is through the centerline of the crane cab
d. It is through the boom butt section
b.
A long boom crane at a short radius and out of level by 300
can see a reduction incapacity by as much as:
50%
Crane stability is based on
lever principle
,What is the OSHA standard for cranes in construction
industry?
29 CFR-1926. Subpart CC
What are the requirements to be a crane inspector?
Same as operator
What percentage of the crane chart is considered a critical lift?
75%
A multi crane lift shall require
Critical lift plan, reduction of gross capacity by 25% and one
designated person in charge.
When doing a pick and carry, tire pressure must
meet manufacturer's specifications
, The load chart is matched to the crane by:
Serial number
Where do you find recommended reeving for the hoist lines?
Owner's manual
Not extending telescoping boom sections equally; what may
occur?
Longer section collapse
What are the broken wire removal requirements for rotation
resistant wire rope?
2 broken wires in 6 diameters or 4 in 30 diameters
How should wire rope be inspected during a frequent
inspection?
Visually
