Mobile Crane Operator Core Review Questions
1. 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 un- Keeping a 90° angle be-
even ground, what support condition should be con- tween cylinder rod and
sidered? pad.
5. Operating a mobile crane with a long boom, on un- Keeping 90° angle be-
even ground, what support condition should be con- tween cylinder rod and
sidered? pad.
6. When may blocking (cribbing) be placed under outrig- Never approved.
ger beams on mobile cranes?
7. Mobile cranes should be level to within what percent 1%
of grade?
8. Timber crane mats work best when they are: bolted together.
9. When arriving in the crane at the job site, the operator access roads.
should first determine the condition of the:
10. What surface listed below would NOT be a good loca- Above underground
tion for assembly or setup of a mobile crane? vaults.
11.
, Mobile Crane Operator Core Review Questions
Each outrigger pad and its blocking should be suffi- The total weight of the
cient to support? crane and its load.
12. How does high wind affect a mobile crane with a long Introduces side load onto
boom? the boom
13. When is the only time the outrigger beams should be The load chart indicates
less than fully that this is allowed.
extended?
14. What is the primary purpose for a rooster sheave or Separate the load hoist
auxiliary boom point sheave? lines.
15. Eccentric main boom tip reeving causes which of the twisting of the main
following: boom.
16. Which type of wire rope listed below is installed on Right regular lay.
most cranes?
17. The hoist drum flange shall extend a minimum of 1/2 inch.
_______ over the top layer of wire rope at all times while
crane is in operation.
18. Which of the following is classified as a standing wire Pendant line.
rope?
19. When lifting on outriggers, the floats or pads should secured to the outriggers
always be: cylinder.
20. How many randomly broken wires in a lay length must 6
there be on a mobile cranes hoist line, before it should
be removed from service?
21. 3.5
, Mobile Crane Operator Core Review Questions
What is the minimum design factor required for a
right regular lay, boom or hoist wire rope?
22. On a mobile crane, how many broken wires are per- 1
mitted at the end
connection of a pendant before it must be taken out
of service?
23. Type 1 rotation resistant hoist wire rope has a design 5 to 1
factor of:
24. It is important to know when lubricating crane hoist not hinder visual inspec-
wire rope, that the lubricant must: tion.
25. How often is the competent person required to in- Each shift.
spect the running wire ropes on a mobile crane?
26. On mobile cranes, how many broken wires must be 3
present in one strand of one lay for running wire rope
to be removed from service?
27. How many randomly distributed broken wires in ro- 2 broken wires in 6 rope
tation-resistant hoist wire rope are considered for re- diameters.
placement?
28. According to OSHA, what is the minimum number 2
of full wraps of wire rope that must remain on hoist
drums in all service conditions?
29. On whose recommendations should a mobile crane Crane manufacturer.
preventative
maintenance program be developed?
30.
1. 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 un- Keeping a 90° angle be-
even ground, what support condition should be con- tween cylinder rod and
sidered? pad.
5. Operating a mobile crane with a long boom, on un- Keeping 90° angle be-
even ground, what support condition should be con- tween cylinder rod and
sidered? pad.
6. When may blocking (cribbing) be placed under outrig- Never approved.
ger beams on mobile cranes?
7. Mobile cranes should be level to within what percent 1%
of grade?
8. Timber crane mats work best when they are: bolted together.
9. When arriving in the crane at the job site, the operator access roads.
should first determine the condition of the:
10. What surface listed below would NOT be a good loca- Above underground
tion for assembly or setup of a mobile crane? vaults.
11.
, Mobile Crane Operator Core Review Questions
Each outrigger pad and its blocking should be suffi- The total weight of the
cient to support? crane and its load.
12. How does high wind affect a mobile crane with a long Introduces side load onto
boom? the boom
13. When is the only time the outrigger beams should be The load chart indicates
less than fully that this is allowed.
extended?
14. What is the primary purpose for a rooster sheave or Separate the load hoist
auxiliary boom point sheave? lines.
15. Eccentric main boom tip reeving causes which of the twisting of the main
following: boom.
16. Which type of wire rope listed below is installed on Right regular lay.
most cranes?
17. The hoist drum flange shall extend a minimum of 1/2 inch.
_______ over the top layer of wire rope at all times while
crane is in operation.
18. Which of the following is classified as a standing wire Pendant line.
rope?
19. When lifting on outriggers, the floats or pads should secured to the outriggers
always be: cylinder.
20. How many randomly broken wires in a lay length must 6
there be on a mobile cranes hoist line, before it should
be removed from service?
21. 3.5
, Mobile Crane Operator Core Review Questions
What is the minimum design factor required for a
right regular lay, boom or hoist wire rope?
22. On a mobile crane, how many broken wires are per- 1
mitted at the end
connection of a pendant before it must be taken out
of service?
23. Type 1 rotation resistant hoist wire rope has a design 5 to 1
factor of:
24. It is important to know when lubricating crane hoist not hinder visual inspec-
wire rope, that the lubricant must: tion.
25. How often is the competent person required to in- Each shift.
spect the running wire ropes on a mobile crane?
26. On mobile cranes, how many broken wires must be 3
present in one strand of one lay for running wire rope
to be removed from service?
27. How many randomly distributed broken wires in ro- 2 broken wires in 6 rope
tation-resistant hoist wire rope are considered for re- diameters.
placement?
28. According to OSHA, what is the minimum number 2
of full wraps of wire rope that must remain on hoist
drums in all service conditions?
29. On whose recommendations should a mobile crane Crane manufacturer.
preventative
maintenance program be developed?
30.
