Mobile Crane Exam Prep
1. 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:
1. 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:
