CCO PRACTICE EXAM WITH 100% ACCURATE DETAILED ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
SOLUTIONS
When working on rubber, cranes are rated at what percentage of tipping:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) 70%||\\//||
b) 75% ||\\//||
c) 80%
||\\//||
d) 85% - correct answer✔✔75%
||\\//|| ||\\//|| ||\\//|| ||\\//||
When a crane is working "on outriggers" the only time they should be less than fully
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
extended is when: ||\\//|| ||\\//||
a) working alongside the highway and cannot block a lane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) you are handling light loads
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) the main boom is being lifted
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) there is a load chart for this operation - correct answer✔✔there is a load chart for this
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
operation
A truck crane set up with the outriggers extended and set, and tires touching the ground,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the operator should refer to what load chart:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) intermediate chart
||\\//|| ||\\//|| ||\\//||
b) over the front chart
||\\//|| ||\\//|| ||\\//|| ||\\//||
c) on rubber chart
||\\//|| ||\\//|| ||\\//||
d) 85% of the main chart - correct answer✔✔on rubber chart
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Blocking paced under the ends of crawler tracks will: ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) increase the crane's stability when operating over front or back
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,b) increase the crane's stability when operating over side
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) stop crane from traveling unexpectedly
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d)stop crane from sliding unexpectedly - correct 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:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) corner
||\\//||
b) side ||\\//||
c) front
||\\//||
d) rear - correct answer✔✔side
||\\//|| ||\\//|| ||\\//|| ||\\//||
During assembly where should you attach slings to lift boom sections:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) to the top of main chords
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) to the top end fittings
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) 2 feet from end of section
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) center of boom section - correct answer✔✔to the top end fittings
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
When a lattice boom truck crane is set up on outriggers, the floats or pads should always be:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) large enough to support two times the applied load
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) with the tires firmly on the ground
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) secured to the outriggers
||\\//|| ||\\//|| ||\\//|| ||\\//||
d) placed on the mats - correct answer✔✔secured to the outriggers
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
A truck crane operating with outriggers fully extended and set, but does not have a front
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
outrigger, the operator should: ||\\//|| ||\\//|| ||\\//||
a) operate over the front with caution
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) refer to the manufacturer's working area diagram
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, c) block under the bumper to provide more stability
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) only operate over the front at a 50% reduction of the load chart - correct answer✔✔refer
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to the manufacturer's working area diagram
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
When a crane is operating on properly set outriggers, the tipping axis is located at the:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) radius of the counterweight
||\\//|| ||\\//|| ||\\//|| ||\\//||
b) center pin of the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) boom heel pins
||\\//|| ||\\//|| ||\\//||
d) point where the outriggers touch the ground - correct answer✔✔point where the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
outriggers touch the ground ||\\//|| ||\\//|| ||\\//||
The purpose of placing mats or cribbing under outrigger floats is to:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) get the tires off the ground
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) distribute the downward force of the float over a larger area
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) allow the float to be level
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) raise the operator's cab for better vision - correct answer✔✔distribute the downward
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
force of the float over a larger area ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
A crane loses stability when its leverage on the load is:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) less than a load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) 70% of the load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) 80% of the load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) more than the load's leverage on the crane - correct answer✔✔less than a load's leverage
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
on the crane
||\\//|| ||\\//|| ||\\//||
If a lattice boom truck crane is going to perform work over the front it must have:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) a second signal person stationed over the front of the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
SOLUTIONS
When working on rubber, cranes are rated at what percentage of tipping:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) 70%||\\//||
b) 75% ||\\//||
c) 80%
||\\//||
d) 85% - correct answer✔✔75%
||\\//|| ||\\//|| ||\\//|| ||\\//||
When a crane is working "on outriggers" the only time they should be less than fully
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
extended is when: ||\\//|| ||\\//||
a) working alongside the highway and cannot block a lane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) you are handling light loads
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) the main boom is being lifted
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) there is a load chart for this operation - correct answer✔✔there is a load chart for this
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
operation
A truck crane set up with the outriggers extended and set, and tires touching the ground,
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
the operator should refer to what load chart:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) intermediate chart
||\\//|| ||\\//|| ||\\//||
b) over the front chart
||\\//|| ||\\//|| ||\\//|| ||\\//||
c) on rubber chart
||\\//|| ||\\//|| ||\\//||
d) 85% of the main chart - correct answer✔✔on rubber chart
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Blocking paced under the ends of crawler tracks will: ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) increase the crane's stability when operating over front or back
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
,b) increase the crane's stability when operating over side
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) stop crane from traveling unexpectedly
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d)stop crane from sliding unexpectedly - correct 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:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) corner
||\\//||
b) side ||\\//||
c) front
||\\//||
d) rear - correct answer✔✔side
||\\//|| ||\\//|| ||\\//|| ||\\//||
During assembly where should you attach slings to lift boom sections:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) to the top of main chords
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) to the top end fittings
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) 2 feet from end of section
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) center of boom section - correct answer✔✔to the top end fittings
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
When a lattice boom truck crane is set up on outriggers, the floats or pads should always be:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) large enough to support two times the applied load
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) with the tires firmly on the ground
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) secured to the outriggers
||\\//|| ||\\//|| ||\\//|| ||\\//||
d) placed on the mats - correct answer✔✔secured to the outriggers
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
A truck crane operating with outriggers fully extended and set, but does not have a front
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
outrigger, the operator should: ||\\//|| ||\\//|| ||\\//||
a) operate over the front with caution
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) refer to the manufacturer's working area diagram
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, c) block under the bumper to provide more stability
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) only operate over the front at a 50% reduction of the load chart - correct answer✔✔refer
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
to the manufacturer's working area diagram
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
When a crane is operating on properly set outriggers, the tipping axis is located at the:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) radius of the counterweight
||\\//|| ||\\//|| ||\\//|| ||\\//||
b) center pin of the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) boom heel pins
||\\//|| ||\\//|| ||\\//||
d) point where the outriggers touch the ground - correct answer✔✔point where the
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
outriggers touch the ground ||\\//|| ||\\//|| ||\\//||
The purpose of placing mats or cribbing under outrigger floats is to:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) get the tires off the ground
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) distribute the downward force of the float over a larger area
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) allow the float to be level
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) raise the operator's cab for better vision - correct answer✔✔distribute the downward
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
force of the float over a larger area ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
A crane loses stability when its leverage on the load is:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) less than a load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
b) 70% of the load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
c) 80% of the load's leverage on the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
d) more than the load's leverage on the crane - correct answer✔✔less than a load's leverage
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
on the crane
||\\//|| ||\\//|| ||\\//||
If a lattice boom truck crane is going to perform work over the front it must have:
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
a) a second signal person stationed over the front of the crane
||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
