Exam (elaborations)
Mobile Crane Operator Core Review QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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Mobile Crane Operator Core Review QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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Mobile Crane Operator Core Review Questions1.Distribute over a larger area.: What is the purpose of placing mats or
cribbing under outrigger floats?
2.Upperworks.: Where is the best location for leveling a crane?
3.there is no weight of the crane bearing on any tires: Before leveling a
mobile crane on outriggers, an operator should ensure:
4.Operating a mobile crane with a long boom, on uneven ground, what sup-
port condition should be considered?: Keeping a 90° angle between
cylinder rod and pad.
5.Operating a mobile crane with a long boom, on uneven ground, what sup-
port condition should be considered?: Keeping 90° angle between
cylinder rod and pad.
6.When may blocking (cribbing) be placed under outrigger beams on
mobile cranes?: Never approved.
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,7.Mobile cranes should be level to within what percent of grade?: 1%
8.Timber crane mats work best when they are:: bolted together.
9.When arriving in the crane at the job site, the operator should first
determine the condition of the:: access roads.
10.What surface listed below would NOT be a good location for assembly
or setup of a mobile crane?: Above underground vaults.
11.Each outrigger pad and its blocking should be sufficient to support?:
The total weight of the crane and its load.
12.How does high wind affect a mobile crane with a long boom?:
Introduces side load onto the boom
13.When is the only time the outrigger beams should be less than
fully extended?: The load chart indicates that this is allowed.
14.What is the primary purpose for a rooster sheave or auxiliary boom
point sheave?: Separate the load hoist lines.
15.Eccentric main boom tip reeving causes which of the following:: twisting
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, of the main boom.
16.Which type of wire rope listed below is installed on most cranes?:
Right regular lay.
17.The hoist drum flange shall extend a minimum of over the top
layer of wire rope at all times while crane is in operation.: 1/2 inch.
18.Which of the following is classified as a standing wire rope?: Pendant
line.
19.When lifting on outriggers, the floats or pads should always be::
secured to the outriggers cylinder.
20.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?: 6
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