NCCCO Mobile Crane Exam 2026 - Complete
Exam Questions with Verified Correct
Answers|| Latest Update -Graded A+
Question 1
Before leveling a mobile crane on outriggers, an operator should ensure:
Answer: there is no weight of the crane bearing on any tires ✔✔
Question 2
Operating a mobile crane with a long boom, on uneven ground, what support condition
should be considered?
Answer: Keeping 90 degree angle between cylinder rod and pad ✔✔
Question 3
What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
Answer: To provide a separate hoist line for lighter loads, used for whip line operations
✔✔
Question 4
How many randomly broken wires in a lay length 6 must there be on a mobile crane's
hoist line, before it should be removed from service?
Answer: 6 randomly distributed broken wires in one lay length ✔✔
Question 5
On a mobile crane, how many broken wires are permitted at the end connection of a
pendent before it must be taken out of service?
Answer: More than one broken wire at the end connection ✔✔
pg. 1
,Question 6
Type 1 rotation resistant hoist wire rope has a design factor of:
Answer: 3.5 ✔✔
Question 7
How many randomly distributed broken wires in rotation-resistant hoist wire rope are
considered for replacement?
Answer: 2 broken wires in 6 rope diameters, or 4 broken wires in 30 rope diameters
✔✔
Question 8
The term net capacity is best defined by which of the terms listed below?
Answer: Gross capacity minus capacity deductions ✔✔
Question 9
Mobile cranes that are set up on barges, shall have a list chart provided by which of the
entities listed below?
Answer: The crane manufacturer or a qualified engineer ✔✔
Question 10
When lifting loads on tires, mobile cranes are rated at what percentage of tipping?
Answer: 75% ✔✔
Question 11
How does the effective weight of a slowed extension relate to the actual weight of the
extension?
Answer: Higher than the actual weight ✔✔
Question 12
pg. 2
, When load radius is between radii values, the operator must use the:
Answer: Next larger radius value on the load chart ✔✔
Question 13
Why should only approved attachments or extra counterweights provided by the
manufacturer be placed on the rear of the crane?
Answer: To maintain the crane's stability and structural integrity as designed ✔✔
Question 14
A mobile crane's jib is offset 15° versus its original 0° offset, but the boom angle remains
unchanged. In this situation, the load radius:
Answer: Increases ✔✔
Question 15
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major
effect?
Answer: Severe side loading on the boom ✔✔
Question 16
When determining the position a mobile crane should be left in overnight, when high
winds are in the forecast the operator should:
Answer: Park the crane with the boom lowered or securely stored ✔✔
Question 17
If a mobile crane is NOT set-up level and the operator swings the load from the high side
to the low side, what effect will that have on the radius?
Answer: The radius will increase ✔✔
Question 18
pg. 3
Exam Questions with Verified Correct
Answers|| Latest Update -Graded A+
Question 1
Before leveling a mobile crane on outriggers, an operator should ensure:
Answer: there is no weight of the crane bearing on any tires ✔✔
Question 2
Operating a mobile crane with a long boom, on uneven ground, what support condition
should be considered?
Answer: Keeping 90 degree angle between cylinder rod and pad ✔✔
Question 3
What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
Answer: To provide a separate hoist line for lighter loads, used for whip line operations
✔✔
Question 4
How many randomly broken wires in a lay length 6 must there be on a mobile crane's
hoist line, before it should be removed from service?
Answer: 6 randomly distributed broken wires in one lay length ✔✔
Question 5
On a mobile crane, how many broken wires are permitted at the end connection of a
pendent before it must be taken out of service?
Answer: More than one broken wire at the end connection ✔✔
pg. 1
,Question 6
Type 1 rotation resistant hoist wire rope has a design factor of:
Answer: 3.5 ✔✔
Question 7
How many randomly distributed broken wires in rotation-resistant hoist wire rope are
considered for replacement?
Answer: 2 broken wires in 6 rope diameters, or 4 broken wires in 30 rope diameters
✔✔
Question 8
The term net capacity is best defined by which of the terms listed below?
Answer: Gross capacity minus capacity deductions ✔✔
Question 9
Mobile cranes that are set up on barges, shall have a list chart provided by which of the
entities listed below?
Answer: The crane manufacturer or a qualified engineer ✔✔
Question 10
When lifting loads on tires, mobile cranes are rated at what percentage of tipping?
Answer: 75% ✔✔
Question 11
How does the effective weight of a slowed extension relate to the actual weight of the
extension?
Answer: Higher than the actual weight ✔✔
Question 12
pg. 2
, When load radius is between radii values, the operator must use the:
Answer: Next larger radius value on the load chart ✔✔
Question 13
Why should only approved attachments or extra counterweights provided by the
manufacturer be placed on the rear of the crane?
Answer: To maintain the crane's stability and structural integrity as designed ✔✔
Question 14
A mobile crane's jib is offset 15° versus its original 0° offset, but the boom angle remains
unchanged. In this situation, the load radius:
Answer: Increases ✔✔
Question 15
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major
effect?
Answer: Severe side loading on the boom ✔✔
Question 16
When determining the position a mobile crane should be left in overnight, when high
winds are in the forecast the operator should:
Answer: Park the crane with the boom lowered or securely stored ✔✔
Question 17
If a mobile crane is NOT set-up level and the operator swings the load from the high side
to the low side, what effect will that have on the radius?
Answer: The radius will increase ✔✔
Question 18
pg. 3
