NCCCO CORE EXAM QUESTIONS WITH
CORRECT ANSWERS
Before leveling a mobile crane on outriggers, an operator should ensure:
| | | | | | | | | |
|- CORRECT 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? - CORRECT ANSWER✔✔-
| | | | | | |
Keeping 90 degree angle between cylinder rod and pad
| | | | | | | |
What is the primary purpose fir a rooster sheave or auxiliary boom point
| | | | | | | | | | | |
sheave? - CORRECT ANSWER✔✔-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? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-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? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-1 |
,Type 1 rotation resistant hoist wire rope has a design factor of: -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-5 to 1 | | |
How many randomly distributed broken wires in rotation- resistant hoist
| | | | | | | | |
wire rope are considered for replacement? - CORRECT ANSWER✔✔-2
| | | | | | | | | |
broken wires in 6 rope diameters
| | | | |
The term net capacity is best defined by which of the terms listed
| | | | | | | | | | | | |
below? - CORRECT ANSWER✔✔-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? - CORRECT ANSWER✔✔-
| | | | | | | | |
Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage
| | | | | | | | | | | |
of tipping? - CORRECT ANSWER✔✔-75%
| | | |
How does the effective weight of a slowed extension relate to the actual
| | | | | | | | | | | |
weight of the extension? - CORRECT ANSWER✔✔-Higher than the
| | | | | | | | | |
actual weight. |
When load radius is between radii values, the operator must use the: -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-longer radius | |
, Why should only approved attachments or extra counterweights
| | | | | | | |
provided by the manufacturer be placed on the rear of the crane? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-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: -
| | | | | | | | | | |
CORRECT ANSWER✔✔-increases |
Abruptly stopping a rapid swing on a long-boom mobile crane will
| | | | | | | | | | |
produce what major effect? - CORRECT ANSWER✔✔-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: - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-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? - CORRECT ANSWER✔✔-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? - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Decreases stability. |
CORRECT ANSWERS
Before leveling a mobile crane on outriggers, an operator should ensure:
| | | | | | | | | |
|- CORRECT 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? - CORRECT ANSWER✔✔-
| | | | | | |
Keeping 90 degree angle between cylinder rod and pad
| | | | | | | |
What is the primary purpose fir a rooster sheave or auxiliary boom point
| | | | | | | | | | | |
sheave? - CORRECT ANSWER✔✔-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? -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-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? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-1 |
,Type 1 rotation resistant hoist wire rope has a design factor of: -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-5 to 1 | | |
How many randomly distributed broken wires in rotation- resistant hoist
| | | | | | | | |
wire rope are considered for replacement? - CORRECT ANSWER✔✔-2
| | | | | | | | | |
broken wires in 6 rope diameters
| | | | |
The term net capacity is best defined by which of the terms listed
| | | | | | | | | | | | |
below? - CORRECT ANSWER✔✔-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? - CORRECT ANSWER✔✔-
| | | | | | | | |
Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage
| | | | | | | | | | | |
of tipping? - CORRECT ANSWER✔✔-75%
| | | |
How does the effective weight of a slowed extension relate to the actual
| | | | | | | | | | | |
weight of the extension? - CORRECT ANSWER✔✔-Higher than the
| | | | | | | | | |
actual weight. |
When load radius is between radii values, the operator must use the: -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-longer radius | |
, Why should only approved attachments or extra counterweights
| | | | | | | |
provided by the manufacturer be placed on the rear of the crane? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-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: -
| | | | | | | | | | |
CORRECT ANSWER✔✔-increases |
Abruptly stopping a rapid swing on a long-boom mobile crane will
| | | | | | | | | | |
produce what major effect? - CORRECT ANSWER✔✔-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: - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-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? - CORRECT ANSWER✔✔-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? - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Decreases stability. |
