NCCCO CORE EXAM 2025 |
GUARANTEED ACCURATE
ANSWERS
Before leveling a mobile crane on outriggers, an operator should ensure:
- ACCURATE ANSWERS✔✔ 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? - ACCURATE ANSWERS✔✔
Keeping 90 degree angle between cylinder rod and pad
What is the primary purpose fir a rooster sheave or auxiliary boom point
sheave? - ACCURATE ANSWERS✔✔ Separate the boom hoist lines
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? -
ACCURATE ANSWERS✔✔ 6
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? -
ACCURATE ANSWERS✔✔ 1
,Type 1 rotation resistant hoist wire rope has a design factor of: -
ACCURATE ANSWERS✔✔ 5 to 1
How many randomly distributed broken wires in rotation- resistant hoist
wire rope are considered for replacement? - ACCURATE
ANSWERS✔✔ 2 broken wires in 6 rope diameters
The term net capacity is best defined by which of the terms listed below?
- ACCURATE ANSWERS✔✔ Gross capacity minus capacity
deductions
Mobile cranes that are set up on barges, shall have a list chart provided
by which of the entities listed below? - ACCURATE ANSWERS✔✔
Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage
of tipping? - ACCURATE ANSWERS✔✔ 75%
How does the effective weight of a slowed extension relate to the actual
weight of the extension? - ACCURATE ANSWERS✔✔ Higher than the
actual weight.
When load radius is between radii values, the operator must use the: -
ACCURATE ANSWERS✔✔ longer radius
, Why should only approved attachments or extra counterweights
provided by the manufacturer be placed on the rear of the crane? -
ACCURATE ANSWERS✔✔ They could cause a backward stability
problem.
A mobile crane's jib is offset 15º versus its original 0º offset, but the
boom angle remains unchanged. In this situation, the load radius: -
ACCURATE ANSWERS✔✔ increases
Abruptly stopping a rapid swing on a long-boom mobile crane will
produce what major effect? - ACCURATE ANSWERS✔✔ Collapsing
the boom.
When determining the position to a mobile crane should be left in over
night, when high winds in the forecast the operator should: -
ACCURATE ANSWERS✔✔ Follow the manufacturers
recommendations.
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? - ACCURATE ANSWERS✔✔ The radius increase.
Increasing the distance from the crane's center of gravity to the tipping
axis will have what effect on the mobile crane? - ACCURATE
ANSWERS✔✔ Decreases stability.
GUARANTEED ACCURATE
ANSWERS
Before leveling a mobile crane on outriggers, an operator should ensure:
- ACCURATE ANSWERS✔✔ 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? - ACCURATE ANSWERS✔✔
Keeping 90 degree angle between cylinder rod and pad
What is the primary purpose fir a rooster sheave or auxiliary boom point
sheave? - ACCURATE ANSWERS✔✔ Separate the boom hoist lines
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? -
ACCURATE ANSWERS✔✔ 6
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? -
ACCURATE ANSWERS✔✔ 1
,Type 1 rotation resistant hoist wire rope has a design factor of: -
ACCURATE ANSWERS✔✔ 5 to 1
How many randomly distributed broken wires in rotation- resistant hoist
wire rope are considered for replacement? - ACCURATE
ANSWERS✔✔ 2 broken wires in 6 rope diameters
The term net capacity is best defined by which of the terms listed below?
- ACCURATE ANSWERS✔✔ Gross capacity minus capacity
deductions
Mobile cranes that are set up on barges, shall have a list chart provided
by which of the entities listed below? - ACCURATE ANSWERS✔✔
Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage
of tipping? - ACCURATE ANSWERS✔✔ 75%
How does the effective weight of a slowed extension relate to the actual
weight of the extension? - ACCURATE ANSWERS✔✔ Higher than the
actual weight.
When load radius is between radii values, the operator must use the: -
ACCURATE ANSWERS✔✔ longer radius
, Why should only approved attachments or extra counterweights
provided by the manufacturer be placed on the rear of the crane? -
ACCURATE ANSWERS✔✔ They could cause a backward stability
problem.
A mobile crane's jib is offset 15º versus its original 0º offset, but the
boom angle remains unchanged. In this situation, the load radius: -
ACCURATE ANSWERS✔✔ increases
Abruptly stopping a rapid swing on a long-boom mobile crane will
produce what major effect? - ACCURATE ANSWERS✔✔ Collapsing
the boom.
When determining the position to a mobile crane should be left in over
night, when high winds in the forecast the operator should: -
ACCURATE ANSWERS✔✔ Follow the manufacturers
recommendations.
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? - ACCURATE ANSWERS✔✔ The radius increase.
Increasing the distance from the crane's center of gravity to the tipping
axis will have what effect on the mobile crane? - ACCURATE
ANSWERS✔✔ Decreases stability.
