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Mobile Crane Exam Prep Questions and Answers 2025.
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Mobile Crane Exam Prep Questions and Answers 2025.
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Mobile Crane Exam Prep Questions and Answers 20251. What is the purpose of placing mats or cribbing under or cribbing under
outrigger floats?: Distribute the force over a larger area.
2. Where is the best location for leveling a crane?: Upperworks. (A revolving
frame of equipment on which operating machinery are mounted along operator's
can)
3. Before leveling a mobile crane on outriggers, an operator should ensure:: -
There is no weight of the crane bearing on any tires.
4. Operating a mobile crane with a long boom, on uneven ground, what
support condition should be considered?: Keeping a 90 degree angle between
cylinder rod and pad.
5. When may blocking (cribbing) be placed under outrigger beams on mobile
cranes?: Never approved.
6. Mobile cranes should be level to within what percent of grade?: 1 %
,7. Timber crane mats work best when they are:: Bolted together
8. When arriving in the crane at the job site, the operator should first determine
the condition of the:: Access roads
9. What surface listed below would Not be a good location for assembly or
setup of a mobile crane?: A. Above compacted fill
B. Above highway asphalt
C. Above underground vaults
D. Above highway concrete
10. Each outrigger pad and its blocking should be sufficient to support?: The
total weight of the crane and its load.
11. How does high wind affect a mobile crane with a long boom?: Introduces
side load onto the boom
12. When is the only time the outrigger beams should be less than fully
extended?: The load chart indicates that this is allowed (always make sure that it
is safe first)
13. What is the primary purpose for a rooster sheave or auxiliary boom point
,sheave?: separate the load hoist lines.
14. Eccentric main boom tip reeving causes which of the following:: twisting of
the main boom
15. which type of wire rope listed below is installed on MOST cranes?
a. right regular lay
b. right alternate lay
c. left regular lay
d. left alternate lay: a. right regular lay
16. The hoist drum flange shall extend a minimum of over the top
layer of wire rope at all times while crane is in operation.
a. 1/2 inch
b. 1 inch
c. 1 1/2 inch
d. 2 inch: 1/2 inch
17. Which type of wire rope listed below is installed on most cranes?
, a. main hoist line
b. boom hoist line
c. Auxiliary hoist line
d. pendant line: pendant line
18. when lifting on outriggers, the floats or pads should always be:
a. sufficient to support three times the applies load
b. raised to touch the tires firmly on the ground
c. secured to the outriggers cylinder
d. secured to the mats: secured to the outriggers cylinder
19. on a mobile crane, how many broken wires are permitted at the connection
of a pendant before it must be taken out of service?
a. 6
b. 5
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