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Ncco core Exam/425 Questions and Answers/100% Accurate
Ncco core Exam/425 Questions and Answers/100% Accurate
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Ncco core Exam/425 Questionsand Answers/100% Accurate
When operating a truck crane what is the most unstable allowable quadrant
of operation? a) Front
b) Rear
c) Side
d) Corner - -C) Side
-What is not a good location for crane setup? a) Top of a hill
b) Hard fill
c) Above utilities
d) Concrete - -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 - -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 - -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. - -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 - -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% - -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 - -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 - -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 - -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 - -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 - -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 - -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 - -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 - -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. - -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 - -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 - -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 - -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 - -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 - -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 - -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
c) The weight may increase if the other crane lands the load
d) The weight may decrease if the other crane lands on the load - -c) The
weight may increase if the other crane lands the load
-If a crane is not set up level and the operator swings a load from the high
side to the low side, the load radius will:
a) Decrease
b) Stay the same
c) Increase two feet for every one degree out of level
d) Increase - -D) increase
-Most crane manufacturers reduce load capacity for duty-cycle operations
because:
a) The Maximum load is almost always known
b) Dynamic loads are not encountered
c) Side loading forced may occur
d) The outward swing of the load decrease the load radius - -C) side loading
forced may occur
-On whose recommendation should a preventative maintenance program be
setup?
a) Master Mechanic
b) Crane operator
c) Company supervisor
d) Crane manufacturer - -D) crane manufacturer
-What is the standard rope used on most cranes?
a) Right regular lay
b) Right alternate lay
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