Mobile Crane Review Questions
2024/2025 Exam Questions and Detailed
Answers | Get it 100% Correct Answers
What is the purpose of placing mats or cribbing under or cribbing under
outrigger floats? - 🧠ANSWER ✔✔Distribute the force over a larger area.
Where is the best location for leveling a crane? - 🧠ANSWER
✔✔Upperworks. (A revolving frame of equipment on which operating
machinery are mounted along operator's can)
Before leveling a mobile crane on outriggers, an operator should ensure: -
🧠ANSWER ✔✔There is no weight of the crane bearing on any tires.
Operating a mobile crane with a long boom, on uneven ground, what
support condition should be considered? - 🧠ANSWER ✔✔Keeping a 90
degree 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 %
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,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 ✔✔A. Above compacted fill
B. Above highway asphalt
C. Above underground vaults
D. Above highway concrete
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
(always make sure that it is safe first)
What is the primary purpose for a rooster sheave or auxiliary boom point
sheave? - 🧠ANSWER ✔✔separate the load hoist lines.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
,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?
a. right regular lay
b. right alternate lay
c. left regular lay
d. left alternate lay - 🧠ANSWER ✔✔a. 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.
a. 1/2 inch
b. 1 inch
c. 1 1/2 inch
d. 2 inch - 🧠ANSWER ✔✔1/2 inch
Which type of wire rope listed below is installed on most cranes?
a. main hoist line
b. boom hoist line
c. Auxiliary hoist line
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
, d. pendant line - 🧠ANSWER ✔✔pendant line
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 - 🧠ANSWER ✔✔secured to the outriggers cylinder
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
c. 3
d. 1 - 🧠ANSWER ✔✔1
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?
a. 4
b. 3
c. 5
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions and Detailed
Answers | Get it 100% Correct Answers
What is the purpose of placing mats or cribbing under or cribbing under
outrigger floats? - 🧠ANSWER ✔✔Distribute the force over a larger area.
Where is the best location for leveling a crane? - 🧠ANSWER
✔✔Upperworks. (A revolving frame of equipment on which operating
machinery are mounted along operator's can)
Before leveling a mobile crane on outriggers, an operator should ensure: -
🧠ANSWER ✔✔There is no weight of the crane bearing on any tires.
Operating a mobile crane with a long boom, on uneven ground, what
support condition should be considered? - 🧠ANSWER ✔✔Keeping a 90
degree 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 %
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
,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 ✔✔A. Above compacted fill
B. Above highway asphalt
C. Above underground vaults
D. Above highway concrete
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
(always make sure that it is safe first)
What is the primary purpose for a rooster sheave or auxiliary boom point
sheave? - 🧠ANSWER ✔✔separate the load hoist lines.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
,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?
a. right regular lay
b. right alternate lay
c. left regular lay
d. left alternate lay - 🧠ANSWER ✔✔a. 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.
a. 1/2 inch
b. 1 inch
c. 1 1/2 inch
d. 2 inch - 🧠ANSWER ✔✔1/2 inch
Which type of wire rope listed below is installed on most cranes?
a. main hoist line
b. boom hoist line
c. Auxiliary hoist line
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 3
STATEMENT. ALL RIGHTS RESERVED
, d. pendant line - 🧠ANSWER ✔✔pendant line
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 - 🧠ANSWER ✔✔secured to the outriggers cylinder
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
c. 3
d. 1 - 🧠ANSWER ✔✔1
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?
a. 4
b. 3
c. 5
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 4
STATEMENT. ALL RIGHTS RESERVED
