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CCO PRACTICE EXAM Study for
Crane Questions with Detailed Verified
Answers
Question: When working on rubber, cranes are rated at what
percentage of tipping:
a) 70%
b) 75%
c) 80%
d) 85%
⼀Answer:⼀ 75%
Question: 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
⼀Answer:⼀ there is a load chart for this operation
Question: A truck crane set up with the outriggers extended and
set, and tires touching the ground, the operator should refer to what
load chart:
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a) intermediate chart
b) over the front chart
c) on rubber chart
d) 85% of the main chart
⼀Answer:⼀ on rubber chart
Question: 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
⼀Answer:⼀ increase the crane's stability when operating over front
or back
Question: What quadrant produces the least amount of ground
pressure on a lattice crawler:
a) corner
b) side
c) front
d) rear
⼀Answer:⼀ side
Question: During assembly where should you attach slings to lift
boom sections:
a) to the top of main chords
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b) to the top end fittings
c) 2 feet from end of section
d) center of boom section
⼀Answer:⼀ to the top end fittings
Question: 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
⼀Answer:⼀ secured to the outriggers
Question: 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
⼀Answer:⼀ refer to the manufacturer's working area diagram
Question: 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
CCO PRACTICE EXAM Study for
Crane Questions with Detailed Verified
Answers
Question: When working on rubber, cranes are rated at what
percentage of tipping:
a) 70%
b) 75%
c) 80%
d) 85%
⼀Answer:⼀ 75%
Question: 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
⼀Answer:⼀ there is a load chart for this operation
Question: A truck crane set up with the outriggers extended and
set, and tires touching the ground, the operator should refer to what
load chart:
, Page | 2
a) intermediate chart
b) over the front chart
c) on rubber chart
d) 85% of the main chart
⼀Answer:⼀ on rubber chart
Question: 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
⼀Answer:⼀ increase the crane's stability when operating over front
or back
Question: What quadrant produces the least amount of ground
pressure on a lattice crawler:
a) corner
b) side
c) front
d) rear
⼀Answer:⼀ side
Question: During assembly where should you attach slings to lift
boom sections:
a) to the top of main chords
, Page | 3
b) to the top end fittings
c) 2 feet from end of section
d) center of boom section
⼀Answer:⼀ to the top end fittings
Question: 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
⼀Answer:⼀ secured to the outriggers
Question: 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
⼀Answer:⼀ refer to the manufacturer's working area diagram
Question: 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
