NCCCO TEST 3 EXAM QUESTIONS
AND ANSWERS
, The crane is out of level, you release the swing brake, the boom swings downhill, your: -
ANSWERSLoad radius increases
Blocking can be placed under the ends of tracks to: - ANSWERSIncrease the crane's
stability when operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler -
ANSWERSSide
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered
by using the: - ANSWERSPower load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major
effect - ANSWERSOverturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be
expected - ANSWERSThe boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: -
ANSWERSCenter of the boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - ANSWERSDon't operate crane.
What effects does having crawlers retracted have on a crawler crane with a long boom -
ANSWERSDecrease in capacity
If your crawler crane is on a barge, it is necessary to: - ANSWERSSecure 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 - ANSWERSLower 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: -
ANSWERSReplaced 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 - ANSWERS1
If high winds are expected and the lattice boom crane must be secured pointing into the
wind, then the hook should be: - ANSWERSSecured to a solid structure directly below
the boom point.
AND ANSWERS
, The crane is out of level, you release the swing brake, the boom swings downhill, your: -
ANSWERSLoad radius increases
Blocking can be placed under the ends of tracks to: - ANSWERSIncrease the crane's
stability when operating over front or back.
What quadrant produces the least amount of ground pressure on a lattice crawler -
ANSWERSSide
On lattice boom cranes fitted with power load lowering, a heavy load should be lowered
by using the: - ANSWERSPower load-lowering feature and the foot brake.
Abruptly stopping a rapid swing on a long-boom mobile crane will produce what major
effect - ANSWERSOverturning the crane or collapsing the boom.
When the boom handle is released to its center position, which action should be
expected - ANSWERSThe boom hoist will be held stationary.
On a lattice boom crawler crane, the main boom length is measured from the: -
ANSWERSCenter of the boom heel pins to the center of the boom tip sheave.
If you can't level your crawler crane: - ANSWERSDon't operate crane.
What effects does having crawlers retracted have on a crawler crane with a long boom -
ANSWERSDecrease in capacity
If your crawler crane is on a barge, it is necessary to: - ANSWERSSecure 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 - ANSWERSLower 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: -
ANSWERSReplaced 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 - ANSWERS1
If high winds are expected and the lattice boom crane must be secured pointing into the
wind, then the hook should be: - ANSWERSSecured to a solid structure directly below
the boom point.
