CCO PRACTICE EXAM/COMPREHENSIVE
GUIDE/ACTUAL EXAM QUESTIONS WITH WELL
DETAILED ANSWERS/NEWEST UPDATE 2025.
When working on rubber, cranes are rated at what percentage of
tipping:
a) 70%
b) 75%
c) 80%
d) 85% - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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:
GUIDE/ACTUAL EXAM QUESTIONS WITH WELL
DETAILED ANSWERS/NEWEST UPDATE 2025.
When working on rubber, cranes are rated at what percentage of
tipping:
a) 70%
b) 75%
c) 80%
d) 85% - 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 - 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 - 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 - 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 - 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 - 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 - 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 - 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:
