Mobile Crane Operator Core Review Questions / (Rea Q-Bank with
Mobile Crane Operator Core Review Questions
Solutions (Verified Answers) Update 2025
Study online at https://quizlet.com/_9p0ujm
1. What is the pur- Distribute over a larger area.
pose of placing
mats or cribbing
under outrigger
floats?
2. Where is the best Upperworks.
location for level-
ing a crane?
3. Before leveling there is no weight of the crane bearing on any tires
a mobile crane
on outriggers, an
operator should
ensure:
4. Keeping a 90° Operating a mobile crane with a long boom, on uneven ground, what support
angle between condition should be considered?
cylinder rod and
pad.
5. Keeping 90° an- Operating a mobile crane with a long boom, on uneven ground, what support
gle between condition should be considered?
cylinder rod and
pad.
6. Never approved. When may blocking (cribbing) be placed under outrigger beams on mobile
cranes?
7. 1% Mobile cranes should be level to within what percent of grade?
8. bolted together. Timber crane mats work best when they are:
, Mobile Crane Operator Core Review Questions
Study online at https://quizlet.com/_9p0ujm
9. access roads. When arriving in the crane at the job site, the operator should first determine the
condition of the:
10. Above under- What surface listed below would NOT be a good location for assembly or setup
ground vaults. of a mobile crane?
11. The total weight Each outrigger pad and its blocking should be sufficient to support?
of the crane and
its load.
12. Introduces side How does high wind affect a mobile crane with a long boom?
load onto the
boom
13. The load chart in- When is the only time the outrigger beams should be less than fully
dicates that this extended?
is allowed.
14. Separate the load What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
hoist lines.
15. twisting of the Eccentric main boom tip reeving causes which of the following:
main boom.
16. Right regular lay. Which type of wire rope listed below is installed on most cranes?
17. 1/2 inch. The hoist drum flange shall extend a minimum of _______ over the top layer of
wire rope at all times while crane is in operation.
18. Pendant line. Which of the following is classified as a standing wire rope?
19. secured to the When lifting on outriggers, the floats or pads should always be:
outriggers cylin-
der.
, Mobile Crane Operator Core Review Questions
Study online at https://quizlet.com/_9p0ujm
20. 6 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?
21. 3.5 What is the minimum design factor required for a right regular lay, boom or hoist
wire rope?
22. 1 On a mobile crane, how many broken wires are permitted at the end
connection of a pendant before it must be taken out of service?
23. 5 to 1 Type 1 rotation resistant hoist wire rope has a design factor of:
24. not hinder visual It is important to know when lubricating crane hoist wire rope, that the lubricant
inspection. must:
25. Each shift. How often is the competent person required to inspect the running wire ropes on
a mobile crane?
26. 3 On mobile cranes, how many broken wires must be present in one strand of one
lay for running wire rope to be removed from service?
27. 2 broken wires How many randomly distributed broken wires in rotation-resistant hoist wire rope
in 6 rope diame- are considered for replacement?
ters.
28. 2 According to OSHA, what is the minimum number of full wraps of wire rope that
must remain on hoist drums in all service conditions?
29. Crane manufac- On whose recommendations should a mobile crane preventative
turer. maintenance program be developed?
30. center of rotation On a mobile crane, the measurement for the load radius is the distance from the
of the crane. center of gravity of the suspended load to the:
31. Yes.
Mobile Crane Operator Core Review Questions
Solutions (Verified Answers) Update 2025
Study online at https://quizlet.com/_9p0ujm
1. What is the pur- Distribute over a larger area.
pose of placing
mats or cribbing
under outrigger
floats?
2. Where is the best Upperworks.
location for level-
ing a crane?
3. Before leveling there is no weight of the crane bearing on any tires
a mobile crane
on outriggers, an
operator should
ensure:
4. Keeping a 90° Operating a mobile crane with a long boom, on uneven ground, what support
angle between condition should be considered?
cylinder rod and
pad.
5. Keeping 90° an- Operating a mobile crane with a long boom, on uneven ground, what support
gle between condition should be considered?
cylinder rod and
pad.
6. Never approved. When may blocking (cribbing) be placed under outrigger beams on mobile
cranes?
7. 1% Mobile cranes should be level to within what percent of grade?
8. bolted together. Timber crane mats work best when they are:
, Mobile Crane Operator Core Review Questions
Study online at https://quizlet.com/_9p0ujm
9. access roads. When arriving in the crane at the job site, the operator should first determine the
condition of the:
10. Above under- What surface listed below would NOT be a good location for assembly or setup
ground vaults. of a mobile crane?
11. The total weight Each outrigger pad and its blocking should be sufficient to support?
of the crane and
its load.
12. Introduces side How does high wind affect a mobile crane with a long boom?
load onto the
boom
13. The load chart in- When is the only time the outrigger beams should be less than fully
dicates that this extended?
is allowed.
14. Separate the load What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
hoist lines.
15. twisting of the Eccentric main boom tip reeving causes which of the following:
main boom.
16. Right regular lay. Which type of wire rope listed below is installed on most cranes?
17. 1/2 inch. The hoist drum flange shall extend a minimum of _______ over the top layer of
wire rope at all times while crane is in operation.
18. Pendant line. Which of the following is classified as a standing wire rope?
19. secured to the When lifting on outriggers, the floats or pads should always be:
outriggers cylin-
der.
, Mobile Crane Operator Core Review Questions
Study online at https://quizlet.com/_9p0ujm
20. 6 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?
21. 3.5 What is the minimum design factor required for a right regular lay, boom or hoist
wire rope?
22. 1 On a mobile crane, how many broken wires are permitted at the end
connection of a pendant before it must be taken out of service?
23. 5 to 1 Type 1 rotation resistant hoist wire rope has a design factor of:
24. not hinder visual It is important to know when lubricating crane hoist wire rope, that the lubricant
inspection. must:
25. Each shift. How often is the competent person required to inspect the running wire ropes on
a mobile crane?
26. 3 On mobile cranes, how many broken wires must be present in one strand of one
lay for running wire rope to be removed from service?
27. 2 broken wires How many randomly distributed broken wires in rotation-resistant hoist wire rope
in 6 rope diame- are considered for replacement?
ters.
28. 2 According to OSHA, what is the minimum number of full wraps of wire rope that
must remain on hoist drums in all service conditions?
29. Crane manufac- On whose recommendations should a mobile crane preventative
turer. maintenance program be developed?
30. center of rotation On a mobile crane, the measurement for the load radius is the distance from the
of the crane. center of gravity of the suspended load to the:
31. Yes.
