NCCCO Test 3 Questions and
Answers6
The crane is out of level, you release the swing brake, the boom swings downhill, your: -
ANSWERS-Load radius increases
Blocking can be placed under the ends of tracks to: - ANSWERS-Increase the crane's stability
when operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler - ANSWERS-
Side
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by
using the: - ANSWERS-Power load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect -
ANSWERS-Overturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be expected -
ANSWERS-The boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: - ANSWERS-
Center of the boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - ANSWERS-Don't operate crane.
, What effects does having crawlers retracted have on a crawler crane with a long boom -
ANSWERS-Decrease in capacity
If your crawler crane is on a barge, it is necessary to: - ANSWERS-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 - ANSWERS-
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: - ANSWERS-
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 - ANSWERS-1
If high winds are expected and the lattice boom crane must be secured pointing into the wind,
then the hook should be: - ANSWERS-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 - ANSWERS-10 ft.
During assembly where should you attach slings to the lift boom - ANSWERS-End fittings.
Which boom configuration can cause the most hazardous boom side-loading condition -
ANSWERS-Long boom with minimum radius
When is it safe to handle loads under power lines - ANSWERS-The load nor any part of the crane
can come closer than regulations allow
Answers6
The crane is out of level, you release the swing brake, the boom swings downhill, your: -
ANSWERS-Load radius increases
Blocking can be placed under the ends of tracks to: - ANSWERS-Increase the crane's stability
when operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler - ANSWERS-
Side
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered by
using the: - ANSWERS-Power load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major effect -
ANSWERS-Overturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be expected -
ANSWERS-The boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: - ANSWERS-
Center of the boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - ANSWERS-Don't operate crane.
, What effects does having crawlers retracted have on a crawler crane with a long boom -
ANSWERS-Decrease in capacity
If your crawler crane is on a barge, it is necessary to: - ANSWERS-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 - ANSWERS-
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: - ANSWERS-
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 - ANSWERS-1
If high winds are expected and the lattice boom crane must be secured pointing into the wind,
then the hook should be: - ANSWERS-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 - ANSWERS-10 ft.
During assembly where should you attach slings to the lift boom - ANSWERS-End fittings.
Which boom configuration can cause the most hazardous boom side-loading condition -
ANSWERS-Long boom with minimum radius
When is it safe to handle loads under power lines - ANSWERS-The load nor any part of the crane
can come closer than regulations allow
