CCO 324 EXAM 2026 LATEST UPDATE
QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+
"Working radius" is defined as the distance from the:
a) base of the boom to the center of the boom
b) front of the crane to the center of gravity of the load
c) center of rotation of the crane to the center of the load
d) center of rotation of the crane to the center of gravity of the suspended load - ANS-center of
rotation of the crane to the center of gravity of the suspended load
Rough terrain crane capacities are generally greater over the:
a) front
b) rear
c) right side
d) left side - ANS-front
Boom length is measured from the:
a) base of the boom to the center of the boom pin sheave
b) boom hinge pins to the boom tip
c) boom hinge pins to the center of the boom tip sheave
d) base of the boom to the boom tip - ANS-boom hinge pins to the center of the boom tip
sheave
Truck crane capacities are usually greater over the:
,a) front
b) rear
c) front right outrigger
d) side - ANS-rear
A truck crane is set up on outriggers. The part of the load chart governed by stability is based on
what percentage of the crane's capacity:
a) 85%
b) 100%
c) 70%
d) 75% - ANS-85%
A crane is set up with 3 of it's 4 outriggers fully extended and the fourth retracted. The capacity
of the crane in this configuration will be found in the:
a) on- outriggers chart
b) on- rubber chart
c) on- outrigger chart minus 20%
d) on- rubber chart plus 20% - ANS-on- rubber chart
Blocking (cribbing) may be placed under outrigger beams:
a) when beams cannot be extended all the way out
b) to increase capacity
c) to increase stability
d) never - ANS-never
Timber blocking placed under the tip of the tracks on a crawler crane will:
a) increase the permitted capacity of the crane
, b) make the crane more stable
c) reduce the capacity of the crane
d) make the crane less stable - ANS-make the crane more stable
When handling boom sections, the best place for slings to be attached is:
a) at the pin connection points at the ends of the top chords
b) at the lattice members
c) anywhere on the top chords
d) at the pin connection points at the ends of the bottom chords - ANS-at the pin connection
points at the ends of the top chords
When setting a crane up on outriggers, the wheel of the crane should:
a) just touch the ground
b) be as a high as possible off the ground
c) be just high enough off the ground to relieve the tires of crane weight
d) stay firmly on the ground to support the crane - ANS-be just high enough off the ground to
relieve the tires of crane weight
If you move a crawler crane from the soft ground to harder ground, ground bearing pressure
will:
a) increase
b) decrease by a third
c) remain the same
d) decrease by half - ANS-increase
On pick and carry operations, you should:
a) keep the boom as short as possible
QUESTIONS AND CORRECT VERIFIED
ANSWERS ALREADY GRADED A+
"Working radius" is defined as the distance from the:
a) base of the boom to the center of the boom
b) front of the crane to the center of gravity of the load
c) center of rotation of the crane to the center of the load
d) center of rotation of the crane to the center of gravity of the suspended load - ANS-center of
rotation of the crane to the center of gravity of the suspended load
Rough terrain crane capacities are generally greater over the:
a) front
b) rear
c) right side
d) left side - ANS-front
Boom length is measured from the:
a) base of the boom to the center of the boom pin sheave
b) boom hinge pins to the boom tip
c) boom hinge pins to the center of the boom tip sheave
d) base of the boom to the boom tip - ANS-boom hinge pins to the center of the boom tip
sheave
Truck crane capacities are usually greater over the:
,a) front
b) rear
c) front right outrigger
d) side - ANS-rear
A truck crane is set up on outriggers. The part of the load chart governed by stability is based on
what percentage of the crane's capacity:
a) 85%
b) 100%
c) 70%
d) 75% - ANS-85%
A crane is set up with 3 of it's 4 outriggers fully extended and the fourth retracted. The capacity
of the crane in this configuration will be found in the:
a) on- outriggers chart
b) on- rubber chart
c) on- outrigger chart minus 20%
d) on- rubber chart plus 20% - ANS-on- rubber chart
Blocking (cribbing) may be placed under outrigger beams:
a) when beams cannot be extended all the way out
b) to increase capacity
c) to increase stability
d) never - ANS-never
Timber blocking placed under the tip of the tracks on a crawler crane will:
a) increase the permitted capacity of the crane
, b) make the crane more stable
c) reduce the capacity of the crane
d) make the crane less stable - ANS-make the crane more stable
When handling boom sections, the best place for slings to be attached is:
a) at the pin connection points at the ends of the top chords
b) at the lattice members
c) anywhere on the top chords
d) at the pin connection points at the ends of the bottom chords - ANS-at the pin connection
points at the ends of the top chords
When setting a crane up on outriggers, the wheel of the crane should:
a) just touch the ground
b) be as a high as possible off the ground
c) be just high enough off the ground to relieve the tires of crane weight
d) stay firmly on the ground to support the crane - ANS-be just high enough off the ground to
relieve the tires of crane weight
If you move a crawler crane from the soft ground to harder ground, ground bearing pressure
will:
a) increase
b) decrease by a third
c) remain the same
d) decrease by half - ANS-increase
On pick and carry operations, you should:
a) keep the boom as short as possible
