Mobile Crane Operator Core
Review Questions with Correct
Answers Pass the Exam, 100%
Verified () Graded
A+
Distribute over a larger area. - ANSWER-What is the purpose of placing mats or
cribbing under outrigger floats?
Upperworks. - ANSWER-Where is the best location for leveling a crane?
there is no weight of the crane bearing on any tires - ANSWER-Before leveling a
mobile crane on outriggers, an operator should ensure:
Operating a mobile crane with a long boom, on uneven ground, what support
condition should be considered? - ANSWER-Keeping a 90° angle between cylinder
rod and pad.
,Operating a mobile crane with a long boom, on uneven ground, what support
condition should be considered? - ANSWER-Keeping 90° angle between cylinder
rod and pad.
When may blocking (cribbing) be placed under outrigger beams on mobile
cranes? - ANSWER-Never approved.
Mobile cranes should be level to within what percent of grade? - ANSWER-1%
Timber crane mats work best when they are: - ANSWER-bolted together.
When arriving in the crane at the job site, the operator should first determine the
condition of the: - ANSWER-access roads.
What surface listed below would NOT be a good location for assembly or setup of
a mobile crane? - ANSWER-Above underground vaults.
Each outrigger pad and its blocking should be sufficient to support? - ANSWER-
The total weight of the crane and its load.
How does high wind affect a mobile crane with a long boom? - ANSWER-
Introduces side load onto the boom
When is the only time the outrigger beams should be less than fully
extended? - ANSWER-The load chart indicates that this is allowed.
, What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
- ANSWER-Separate the load hoist lines.
Eccentric main boom tip reeving causes which of the following: - ANSWER-twisting
of the main boom.
Which type of wire rope listed below is installed on most cranes? - ANSWER-Right
regular lay.
The hoist drum flange shall extend a minimum of _______ over the top layer of
wire rope at all times while crane is in operation. - ANSWER-1/2 inch.
Which of the following is classified as a standing wire rope? - ANSWER-Pendant
line.
When lifting on outriggers, the floats or pads should always be: - ANSWER-secured
to the outriggers cylinder.
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? - ANSWER-6
What is the minimum design factor required for a right regular lay, boom or hoist
wire rope? - ANSWER-3.5
On a mobile crane, how many broken wires are permitted at the end
Review Questions with Correct
Answers Pass the Exam, 100%
Verified () Graded
A+
Distribute over a larger area. - ANSWER-What is the purpose of placing mats or
cribbing under outrigger floats?
Upperworks. - ANSWER-Where is the best location for leveling a crane?
there is no weight of the crane bearing on any tires - ANSWER-Before leveling a
mobile crane on outriggers, an operator should ensure:
Operating a mobile crane with a long boom, on uneven ground, what support
condition should be considered? - ANSWER-Keeping a 90° angle between cylinder
rod and pad.
,Operating a mobile crane with a long boom, on uneven ground, what support
condition should be considered? - ANSWER-Keeping 90° angle between cylinder
rod and pad.
When may blocking (cribbing) be placed under outrigger beams on mobile
cranes? - ANSWER-Never approved.
Mobile cranes should be level to within what percent of grade? - ANSWER-1%
Timber crane mats work best when they are: - ANSWER-bolted together.
When arriving in the crane at the job site, the operator should first determine the
condition of the: - ANSWER-access roads.
What surface listed below would NOT be a good location for assembly or setup of
a mobile crane? - ANSWER-Above underground vaults.
Each outrigger pad and its blocking should be sufficient to support? - ANSWER-
The total weight of the crane and its load.
How does high wind affect a mobile crane with a long boom? - ANSWER-
Introduces side load onto the boom
When is the only time the outrigger beams should be less than fully
extended? - ANSWER-The load chart indicates that this is allowed.
, What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
- ANSWER-Separate the load hoist lines.
Eccentric main boom tip reeving causes which of the following: - ANSWER-twisting
of the main boom.
Which type of wire rope listed below is installed on most cranes? - ANSWER-Right
regular lay.
The hoist drum flange shall extend a minimum of _______ over the top layer of
wire rope at all times while crane is in operation. - ANSWER-1/2 inch.
Which of the following is classified as a standing wire rope? - ANSWER-Pendant
line.
When lifting on outriggers, the floats or pads should always be: - ANSWER-secured
to the outriggers cylinder.
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? - ANSWER-6
What is the minimum design factor required for a right regular lay, boom or hoist
wire rope? - ANSWER-3.5
On a mobile crane, how many broken wires are permitted at the end
