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NCCCO LATTICE BOOM GENERAL KNOWLEDGE EXAM NEWEST
2026 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
When a crane is properly barricaded, what is the clearance
required all the way around 360 degrees between the
superstructure and the barricade when swung 360 degrees? -
ANSWER-2 feet
According to ASME B30.5 a fire extinguisher shall have a rating of
__________ and shall be available at all operator's stations or
cabs of the equipment. - ANSWER-10 BC or higher
When assembling a lattice boom crane the top pins of the boom
sections should be inserted; - ANSWER-First
Block hoisting sheaves should have a minimum pitch diameter of
at least________ the rope diameter. - ANSWER-16 times
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What is the correct method of checking the brakes of crane that
has been already assembled? - ANSWER-Lift the load a few
inches off the ground and apply the brakes
D to d ratio means what? - ANSWER-Sheave diameter or Pitch
diameter divided by wire rope diameter
What is the meaning of Controlled load lowering? - ANSWER-Use
of a mechanical hoist drum device that allows a hoisted load to be
lowered with maximum control using the gear train or hydraulic
components of the hoist mechanism.
On a lattice boom crawler crane, the main boom length is
measured from the: - ANSWER-Center of the boom heel pins to
the center of the boom tip sheave
What is the main purpose of mid point suspension pendants? -
ANSWER-To absorb shock that comes with dynamic loading
, 3|Page
The main purpose of a gantry or a mast on a crane is: -
ANSWER-To increase the crane's leverage on the boom
What effect does having the crawlers retracted have on a crawler
crane with a long boom - ANSWER-Increases the probability of
tipping
When using a mobile crane on a barge, the crane's load capacity
chart shall be - ANSWER-Replaced by a list chart
Blocking can be placed under the ends of tracks to: - ANSWER-
Increase the crane's stability when operating over the front or
back
A crawler crane is based on ________ stability of static load. -
ANSWER-75%
What quadrant produces the least amount of ground pressure on
a lattice crawler - ANSWER-Side
NCCCO LATTICE BOOM GENERAL KNOWLEDGE EXAM NEWEST
2026 ACTUAL EXAM WITH COMPLETE QUESTIONS AND CORRECT
DETAILED ANSWERS (100% VERIFIED ANSWERS) |ALREADY
GRADED A+| ||PROFESSOR VERIFIED||
When a crane is properly barricaded, what is the clearance
required all the way around 360 degrees between the
superstructure and the barricade when swung 360 degrees? -
ANSWER-2 feet
According to ASME B30.5 a fire extinguisher shall have a rating of
__________ and shall be available at all operator's stations or
cabs of the equipment. - ANSWER-10 BC or higher
When assembling a lattice boom crane the top pins of the boom
sections should be inserted; - ANSWER-First
Block hoisting sheaves should have a minimum pitch diameter of
at least________ the rope diameter. - ANSWER-16 times
,2|Page
What is the correct method of checking the brakes of crane that
has been already assembled? - ANSWER-Lift the load a few
inches off the ground and apply the brakes
D to d ratio means what? - ANSWER-Sheave diameter or Pitch
diameter divided by wire rope diameter
What is the meaning of Controlled load lowering? - ANSWER-Use
of a mechanical hoist drum device that allows a hoisted load to be
lowered with maximum control using the gear train or hydraulic
components of the hoist mechanism.
On a lattice boom crawler crane, the main boom length is
measured from the: - ANSWER-Center of the boom heel pins to
the center of the boom tip sheave
What is the main purpose of mid point suspension pendants? -
ANSWER-To absorb shock that comes with dynamic loading
, 3|Page
The main purpose of a gantry or a mast on a crane is: -
ANSWER-To increase the crane's leverage on the boom
What effect does having the crawlers retracted have on a crawler
crane with a long boom - ANSWER-Increases the probability of
tipping
When using a mobile crane on a barge, the crane's load capacity
chart shall be - ANSWER-Replaced by a list chart
Blocking can be placed under the ends of tracks to: - ANSWER-
Increase the crane's stability when operating over the front or
back
A crawler crane is based on ________ stability of static load. -
ANSWER-75%
What quadrant produces the least amount of ground pressure on
a lattice crawler - ANSWER-Side
