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NCCCO Final Test exam questions and answers
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NCCCO Final Test exam questions and answers
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NCCCO Final Test exam 2024-2025 questions and answersWhat type of capacity is listed on a crane load chart? - ANSWER>>Static
List two reasons crane manufacturers require reductions in capacity for duty cycle work. -
ANSWER>>1) dynamic loading
2) increased radius
Where is the tipping axis of a crawler crane located? - ANSWER>>It depends if the idler or
sprocket are in line or offset from the track rollers
Where are the Standard Method hand signals found? - ANSWER>>OSHA Subpart CC
A truck crane is set up on outriggers. The part of the load chart governed by stability is based on
what percentage of the cranes capacity? - ANSWER>>85%
Truck crane capacities are usually greater over the _________ - ANSWER>>Rear
If the operator makes two audible signals when moving a crane, he/she intends to
______________ - ANSWER>>Go ahead
Blocking (Cribbing) may be placed under outrigger beams: - ANSWER>>Never.
Timber blocking placed under the tips of the tracks on a crawler crane will: - ANSWER>>Make
the crane more stable
, What is the primary purpose of placing blocking under the ends of the tracks on a crawler
crane? - ANSWER>>To ensure that the tipping axis is the sprocket or idler, rather than a track
roller.
Suppose you are traveling a crawler crane with the drive trains to the rear, and you need to
turn right on hard, and level ground. What should you do? - ANSWER>>Travel the left track
forward to minimize wear.
When using outrigger jacks to level a crane, what is the best procedure to follow? -
ANSWER>>Make firm contact with all four jacks. Then operate two jacks at a time on either
side of the lowest corner to get to level. Last, make sure the crane is high enough to have the
tires off the ground.
How does the use of outriggers increase the tipping capacity of a crane? - ANSWER>>By moving
the tipping axis further from the center of gravity of the crane
Many load charts for cranes state that the area of least stability is over the side. What
statement explains this the best? - ANSWER>>The distance between the crane's center of
gravity and the tipping axis is smallest in that quadrant.
List two examples of outrigger use in which the crane's leverage on the load is reduced. -
ANSWER>>Outriggers not fully extended, tires not off ground
According to OSHA 29 CFR 1910.180, how accurate must a load weight be if it is in the
structural portion of the load chart? - ANSWER>>Plus of minus 10%
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