National Commission for the Certification of
Crane Operators Core Exam Questions and
Answers Study Guide
When operating a truck crane what is the most unstable allowable quadrant of operation? a)
Front
b) Rear
c) Side
d) Corner - ANSWER>>C) Side
What is not a good location for crane setup? a) Top of a hill
b) Hard fill
c) Above utilities
d) Concrete - ANSWER>>C) above utilities
When an operator arrives at the jobsite and the crane is already erected, how would the
operator check the main and auxiliary hoist brakes?
a) Check pedal for the correct feel
b) Rely on the superintendent to verify the brakes are functioning properly c) Make the lift and
see what happens
d) Lift the load off the ground and apply the brake - ANSWER>>d) Lift the load off the ground
and apply the brake
What is the difference between an Anti-two-block warning and an Anti-two-block prevention
system?
a) Warning device only warns, but prevention system will stop the operation
b) Prevention system only warns, but warning device stops the operation
c) Both are the same
d) Both will warn and stop the dangerous operation - ANSWER>>a) Warning device only warns,
but prevention system will stop the operation
Who gives the operator hand signals?
a) The foreman
b) The Superintendent
,c) The qualified person
d) Anyone who wants to. - ANSWER>>C) the qualified person
Why use mats or cribbing?
a) To lift outriggers or crawler off the ground
b) To reduce ground pressure
c) For long boom cranes
d) To stop mud from entering crawlers - ANSWER>>B) to reduce ground pressure
Tipping capacities of RT cranes with retracted outriggers are based on what percentage of
tipping?
a) 70%
b) 80%
c) 85%
d) 75% - ANSWER>>D) 75
Should the load be applied when determining the proper boom angle?
a) Yes
b) No
c) Depends on lift conditions
d) Only during critical lifts - ANSWER>>A) yes
When should the operator use the run by the seat of the pants technique?
a) Always
b) Never
c) When not making a critical lift
d) Only when making a critical lift - ANSWER>>B) never
Load radius is the distance from the center of gravity of the suspended load to the:
a) Center of rotation
b) Center of gravity of the crane
c) Tipping Axis
d) Hook rollers - ANSWER>>A) center of rotation
What is the primary reason for using a boom extension?
a) Increase load radius
b) Decrease load radius
c) Increase height
,d) Increase reach - ANSWER>>C) increase height
What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist
rope?
a) 5
b) 3.5
c) 2.5
d) 7 - ANSWER>>B) 3.5
When telescoping the boom section of an R/T, which section should be telescoped first?
a) First
b) Doesn't matter
c) Largest
d) All sections should be telescoped equally - ANSWER>>D) all sections should be telescoped
equally
How does the operator determine if correct load chart is being used?
a) Matching serial number
b) Matching Model number
c) Matching Manufacturer's code number
d) Same manufacturer - ANSWER>>A) matching serial number
Net capacity is equal to:
a) Gross capacity minus capacity deductions
b) Net load plus gross capacity
c) Capacity deductions minus gross capacity
d) Net load minus gross capacity - ANSWER>>A) gross capacity minus capacity deductions
If the SWL of a cranes wire rope is 10,000 lbs using one part, what is the SWL when using 4
parts?
a) 10,000 lbs.
b) 20,000 lbs.
c) 30,000 lbs.
d) 40,000 lbs. - ANSWER>>D) 40,000 lbs
When first arriving on the jobsite, the operator should first determine the condition of the:
a) Cranes setup location
b) Access roads
, c) Parking Lot
d) Headache ball - ANSWER>>B) access roads
How does the operator verify the LMI's boom length or load radius reading?
a) Actual measurements
b) No need to verify
c) Calibrate the LMI
d) Check with superintendent - ANSWER>>A) actual measurements
If the rated capacity of the crane is above the solid line or within the shaded areas or has an
asterisk next to it, this means the capacity is based on:
a) 75% of structural competence
b) Structural competence
c) 85% of tipping
d) tipping - ANSWER>>B) structural competence
All hazards and potential problems should be discovered during the:
a) Pre-lift site inspection
b) Actual lift operation
c) Daily safety meeting
d) Coffee break - ANSWER>>A) pre-lift site inspection
How many broken wires must be present in one strand of one lay for running wire rope to be
removed from service?
a) 3
b) 4
c) 2
d) 6 - ANSWER>>A) 3
In a range diagram, boom length and angle can be used to determine:
a) Load weight
b) Load radius
c) Counterweight requirements
d) Net capacity - ANSWER>>B) load radius
When making a multiple crane lift it is important for the operator to understand that:
a) The weight is equally distributed at all times
b) The weight is never equally distributed
Crane Operators Core Exam Questions and
Answers Study Guide
When operating a truck crane what is the most unstable allowable quadrant of operation? a)
Front
b) Rear
c) Side
d) Corner - ANSWER>>C) Side
What is not a good location for crane setup? a) Top of a hill
b) Hard fill
c) Above utilities
d) Concrete - ANSWER>>C) above utilities
When an operator arrives at the jobsite and the crane is already erected, how would the
operator check the main and auxiliary hoist brakes?
a) Check pedal for the correct feel
b) Rely on the superintendent to verify the brakes are functioning properly c) Make the lift and
see what happens
d) Lift the load off the ground and apply the brake - ANSWER>>d) Lift the load off the ground
and apply the brake
What is the difference between an Anti-two-block warning and an Anti-two-block prevention
system?
a) Warning device only warns, but prevention system will stop the operation
b) Prevention system only warns, but warning device stops the operation
c) Both are the same
d) Both will warn and stop the dangerous operation - ANSWER>>a) Warning device only warns,
but prevention system will stop the operation
Who gives the operator hand signals?
a) The foreman
b) The Superintendent
,c) The qualified person
d) Anyone who wants to. - ANSWER>>C) the qualified person
Why use mats or cribbing?
a) To lift outriggers or crawler off the ground
b) To reduce ground pressure
c) For long boom cranes
d) To stop mud from entering crawlers - ANSWER>>B) to reduce ground pressure
Tipping capacities of RT cranes with retracted outriggers are based on what percentage of
tipping?
a) 70%
b) 80%
c) 85%
d) 75% - ANSWER>>D) 75
Should the load be applied when determining the proper boom angle?
a) Yes
b) No
c) Depends on lift conditions
d) Only during critical lifts - ANSWER>>A) yes
When should the operator use the run by the seat of the pants technique?
a) Always
b) Never
c) When not making a critical lift
d) Only when making a critical lift - ANSWER>>B) never
Load radius is the distance from the center of gravity of the suspended load to the:
a) Center of rotation
b) Center of gravity of the crane
c) Tipping Axis
d) Hook rollers - ANSWER>>A) center of rotation
What is the primary reason for using a boom extension?
a) Increase load radius
b) Decrease load radius
c) Increase height
,d) Increase reach - ANSWER>>C) increase height
What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist
rope?
a) 5
b) 3.5
c) 2.5
d) 7 - ANSWER>>B) 3.5
When telescoping the boom section of an R/T, which section should be telescoped first?
a) First
b) Doesn't matter
c) Largest
d) All sections should be telescoped equally - ANSWER>>D) all sections should be telescoped
equally
How does the operator determine if correct load chart is being used?
a) Matching serial number
b) Matching Model number
c) Matching Manufacturer's code number
d) Same manufacturer - ANSWER>>A) matching serial number
Net capacity is equal to:
a) Gross capacity minus capacity deductions
b) Net load plus gross capacity
c) Capacity deductions minus gross capacity
d) Net load minus gross capacity - ANSWER>>A) gross capacity minus capacity deductions
If the SWL of a cranes wire rope is 10,000 lbs using one part, what is the SWL when using 4
parts?
a) 10,000 lbs.
b) 20,000 lbs.
c) 30,000 lbs.
d) 40,000 lbs. - ANSWER>>D) 40,000 lbs
When first arriving on the jobsite, the operator should first determine the condition of the:
a) Cranes setup location
b) Access roads
, c) Parking Lot
d) Headache ball - ANSWER>>B) access roads
How does the operator verify the LMI's boom length or load radius reading?
a) Actual measurements
b) No need to verify
c) Calibrate the LMI
d) Check with superintendent - ANSWER>>A) actual measurements
If the rated capacity of the crane is above the solid line or within the shaded areas or has an
asterisk next to it, this means the capacity is based on:
a) 75% of structural competence
b) Structural competence
c) 85% of tipping
d) tipping - ANSWER>>B) structural competence
All hazards and potential problems should be discovered during the:
a) Pre-lift site inspection
b) Actual lift operation
c) Daily safety meeting
d) Coffee break - ANSWER>>A) pre-lift site inspection
How many broken wires must be present in one strand of one lay for running wire rope to be
removed from service?
a) 3
b) 4
c) 2
d) 6 - ANSWER>>A) 3
In a range diagram, boom length and angle can be used to determine:
a) Load weight
b) Load radius
c) Counterweight requirements
d) Net capacity - ANSWER>>B) load radius
When making a multiple crane lift it is important for the operator to understand that:
a) The weight is equally distributed at all times
b) The weight is never equally distributed
