NCCCO CORE QUESTIONS AND ANSWERS
2025
Before,leveling,a,mobile,crane,on,outriggers,,an,operator,should,ensure:,-
,ANSWER,there,is,no,weight,of,the,crane,bearing,on,any,tires
Operating,a,mobile,crane,with,a,long,boom,,on,uneven,ground,,what,support,condition,should,b
e,considered?,-,ANSWER,Keeping,90,degree,angle,between,cylinder,rod,and,pad
What,is,the,primary,purpose,fir,a,rooster,sheave,or,auxiliary,boom,point,sheave?,-
,ANSWER,Separate,the,boom,hoist,lines
How,many,randomly,broken,wires,in,a,lay,length,must,there,be,on,a,mobile,cranes,hoist,line,,bef
ore,it,should,be,removed,from,service?,-,ANSWER,6
On,a,mobile,crane,,how,many,broken,wires,are,permitted,at,the,end,connection,of,a,pendent,be
fore,it,must,be,taken,out,of,service?,-,ANSWER,1
Type,1,rotation,resistant,hoist,wire,rope,has,a,design,factor,of:,-,ANSWER,5,to,1
How,many,randomly,distributed,broken,wires,in,rotation-
,resistant,hoist,wire,rope,are,considered,for,replacement?,-
,ANSWER,2,broken,wires,in,6,rope,diameters
The,term,net,capacity,is,best,defined,by,which,of,the,terms,listed,below?,-
,ANSWER,Gross,capacity,minus,capacity,deductions
Mobile,cranes,that,are,set,up,on,barges,,shall,have,a,list,chart,provided,by,which,of,the,entities,li
sted,below?,-,ANSWER,Manufacturer
, When,lifting,loads,on,tires,,mobile,cranes,are,rated,at,what,percentage,of,tipping?,-
,ANSWER,75%
How,does,the,effective,weight,of,a,slowed,extension,relate,to,the,actual,weight,of,the,extension
?,-,ANSWER,Higher,than,the,actual,weight.
When,load,radius,is,between,radii,values,,the,operator,must,use,the:,-,ANSWER,longer,radius
Why,should,only,approved,attachments,or,extra,counterweights,provided,by,the,manufacturer,b
e,placed,on,the,rear,of,the,crane?,-,ANSWER,They,could,cause,a,backward,stability,problem.
A,mobile,crane's,jib,is,offset,15º,versus,its,original,0º,offset,,but,the,boom,angle,remains,unchan
ged.,In,this,situation,,the,load,radius:,-,ANSWER,increases
Abruptly,stopping,a,rapid,swing,on,a,long-boom,mobile,crane,will,produce,what,major,effect?,-
,ANSWER,Collapsing,the,boom.
When,determining,the,position,to,a,mobile,crane,should,be,left,in,over,night,,when,high,winds,i
n,the,forecast,the,operator,should:,-,ANSWER,Follow,the,manufacturers,recommendations.
If,a,mobile,crane,is,NOT,set-
up,level,and,the,operator,swings,the,load,from,the,high,side,to,the,low,side,,what,effect,will,that
,have,on,the,radius?,-,ANSWER,The,radius,increase.
Increasing,the,distance,from,the,crane's,center,of,gravity,to,the,tipping,axis,will,have,what,effect
,on,the,mobile,crane?,-,ANSWER,Decreases,stability.
Backward,stability,of,a,mobile,crane,is,tested,in,which,configuration,listed,below?,-
,ANSWER,Basic,boom,at,minimum,angle,with,no,load
2025
Before,leveling,a,mobile,crane,on,outriggers,,an,operator,should,ensure:,-
,ANSWER,there,is,no,weight,of,the,crane,bearing,on,any,tires
Operating,a,mobile,crane,with,a,long,boom,,on,uneven,ground,,what,support,condition,should,b
e,considered?,-,ANSWER,Keeping,90,degree,angle,between,cylinder,rod,and,pad
What,is,the,primary,purpose,fir,a,rooster,sheave,or,auxiliary,boom,point,sheave?,-
,ANSWER,Separate,the,boom,hoist,lines
How,many,randomly,broken,wires,in,a,lay,length,must,there,be,on,a,mobile,cranes,hoist,line,,bef
ore,it,should,be,removed,from,service?,-,ANSWER,6
On,a,mobile,crane,,how,many,broken,wires,are,permitted,at,the,end,connection,of,a,pendent,be
fore,it,must,be,taken,out,of,service?,-,ANSWER,1
Type,1,rotation,resistant,hoist,wire,rope,has,a,design,factor,of:,-,ANSWER,5,to,1
How,many,randomly,distributed,broken,wires,in,rotation-
,resistant,hoist,wire,rope,are,considered,for,replacement?,-
,ANSWER,2,broken,wires,in,6,rope,diameters
The,term,net,capacity,is,best,defined,by,which,of,the,terms,listed,below?,-
,ANSWER,Gross,capacity,minus,capacity,deductions
Mobile,cranes,that,are,set,up,on,barges,,shall,have,a,list,chart,provided,by,which,of,the,entities,li
sted,below?,-,ANSWER,Manufacturer
, When,lifting,loads,on,tires,,mobile,cranes,are,rated,at,what,percentage,of,tipping?,-
,ANSWER,75%
How,does,the,effective,weight,of,a,slowed,extension,relate,to,the,actual,weight,of,the,extension
?,-,ANSWER,Higher,than,the,actual,weight.
When,load,radius,is,between,radii,values,,the,operator,must,use,the:,-,ANSWER,longer,radius
Why,should,only,approved,attachments,or,extra,counterweights,provided,by,the,manufacturer,b
e,placed,on,the,rear,of,the,crane?,-,ANSWER,They,could,cause,a,backward,stability,problem.
A,mobile,crane's,jib,is,offset,15º,versus,its,original,0º,offset,,but,the,boom,angle,remains,unchan
ged.,In,this,situation,,the,load,radius:,-,ANSWER,increases
Abruptly,stopping,a,rapid,swing,on,a,long-boom,mobile,crane,will,produce,what,major,effect?,-
,ANSWER,Collapsing,the,boom.
When,determining,the,position,to,a,mobile,crane,should,be,left,in,over,night,,when,high,winds,i
n,the,forecast,the,operator,should:,-,ANSWER,Follow,the,manufacturers,recommendations.
If,a,mobile,crane,is,NOT,set-
up,level,and,the,operator,swings,the,load,from,the,high,side,to,the,low,side,,what,effect,will,that
,have,on,the,radius?,-,ANSWER,The,radius,increase.
Increasing,the,distance,from,the,crane's,center,of,gravity,to,the,tipping,axis,will,have,what,effect
,on,the,mobile,crane?,-,ANSWER,Decreases,stability.
Backward,stability,of,a,mobile,crane,is,tested,in,which,configuration,listed,below?,-
,ANSWER,Basic,boom,at,minimum,angle,with,no,load
