NCCCO Test 3
The crane is out of level, you release the swing brake, the boom swings downhill, your: - Answer-Load
radius increases
Blocking can be placed under the ends of tracks to: - Answer-Increase the crane's stability when
operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler - Answer-Side
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by using the: -
Answer-Power load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect - Answer-
Overturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be expected - Answer-The
boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: - Answer-Center of the
boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - Answer-Don't operate crane.
, What effects does having crawlers retracted have on a crawler crane with a long boom - Answer-
Decrease in capacity
If your crawler crane is on a barge, it is necessary to: - Answer-Secure the crane to the barge
A pin-connected lattice boom is being dismantled. After connecting the equalizer (bridle) to the
connecting lugs on the boom, which boom connecting pins should be removed first - Answer-Lower
connection pins, located at and ahead of the equalizer.
When using a mobile crane on a barge, the crane's load capacity chart should be: - Answer-Replaced by
a list chart.
How many broken wires are permitted at the end connection of a pendant before it must be taken out
of service - Answer-1
If high winds are expected and the lattice boom crane must be secured pointing into the wind, then the
hook should be: - Answer-Secured to a solid structure directly below the boom point.
When assembling a lattice boom on most crawler cranes using different lengths, which insert section,
generally, should be closest to the boom foot - Answer-10 ft.
During assembly where should you attach slings to the lift boom - Answer-End fittings.
Which boom configuration can cause the most hazardous boom side-loading condition - Answer-Long
boom with minimum radius
When is it safe to handle loads under power lines - Answer-The load nor any part of the crane can come
closer than regulations allow
The crane is out of level, you release the swing brake, the boom swings downhill, your: - Answer-Load
radius increases
Blocking can be placed under the ends of tracks to: - Answer-Increase the crane's stability when
operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler - Answer-Side
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by using the: -
Answer-Power load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect - Answer-
Overturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be expected - Answer-The
boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: - Answer-Center of the
boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - Answer-Don't operate crane.
, What effects does having crawlers retracted have on a crawler crane with a long boom - Answer-
Decrease in capacity
If your crawler crane is on a barge, it is necessary to: - Answer-Secure the crane to the barge
A pin-connected lattice boom is being dismantled. After connecting the equalizer (bridle) to the
connecting lugs on the boom, which boom connecting pins should be removed first - Answer-Lower
connection pins, located at and ahead of the equalizer.
When using a mobile crane on a barge, the crane's load capacity chart should be: - Answer-Replaced by
a list chart.
How many broken wires are permitted at the end connection of a pendant before it must be taken out
of service - Answer-1
If high winds are expected and the lattice boom crane must be secured pointing into the wind, then the
hook should be: - Answer-Secured to a solid structure directly below the boom point.
When assembling a lattice boom on most crawler cranes using different lengths, which insert section,
generally, should be closest to the boom foot - Answer-10 ft.
During assembly where should you attach slings to the lift boom - Answer-End fittings.
Which boom configuration can cause the most hazardous boom side-loading condition - Answer-Long
boom with minimum radius
When is it safe to handle loads under power lines - Answer-The load nor any part of the crane can come
closer than regulations allow
