NCCCO MOBILE CRANE QUESTIONS

NCCCO MOBILE CRANE QUESTIONS

AND ANSWERS

1.,What,action,does,a,signal,person,intend,the,operator,to,perform,if,he,extends,his,arm,at,shou lder,height,,makes,a,fist,with,his,hand,,and,sticks,his/her,thumb,up?a.,Boom,down, b.,Swing, c.,Boom,up, d.,Extend,boom,-,ANSWER,c.

2.,When,hoisting,personnel,,within,what,percentage,of,level,must,a,telescopic,boom,crane,be,in, order,for,the,gross,ratings,in,the,load,chart,to,remain,valid?a.,1% b.,2%, c.,5%, d.,8%,-,ANSWER,a.

3.,The,load,line,of,the,crane,you're,operating,contacts,an,energized,power,line.,There's,no,sign,o f,any,other,danger,,such,as,fire.,What,should,you,do?a.,Climb,down,carefully,from,the,crane,cab, b.,Jump,down,,feet,together, c.,Stay,in,the,cab,until,the,lines,are,de-energized, d.,Get,as,far,away,from,the,crane,as,possible,-,ANSWER,c.

4.,According,to,OSHA,1926.1413,,how,many,randomly,distributed,broken,wires,in,rotation- resistant,rope,are,cause,for,replacement,of,the,rope?a.,1,broken,wire,in,6,rope,diameters, b.,2,broken,wires,in,30,rope,diameters, c.,3,broken,wires,in,one,strand,in,one,lay, 1 / 3

d.,2,broken,wires,in,6,rope,diameters,-,ANSWER,d.

5.,What,is,the,net,capacity,of,a,crane,on,main,boom,unless,the,manufacturer,states,otherwise?a.,The,capacity,listed,in,the,load,chart,minus,the,weight,of,the,rigging,and,all,attachments, b.,The,capacity,listed,in,the,load,chart,plus,the,weight,of,the,rigging,and,all,attachments, c.,The,capacity,listed,in,the,load,chart,minus,the,weight,of,the,rigging,and,all,attachments,not,in, use, d.,The,capacity,listed,in,the,load,chart,minus,the,weight,of,the,rigging,alone,-,ANSWER,a.

6.,What,may,happen,to,a,properly,rigged,load,when,lifted,off,the,ground,unless,the,operator,tak es,account,of,boom,deflection?a.,It,could,swing,out,away,from,the,crane, b.,It,could,swing,in,towards,the,crane, c.,It,could,raise,absolutely,vertically, d.,It,could,shift,in,its,rigging,-,ANSWER,a.

7.,What,Standard,Method,hand,signal,is,being,illustrated?

a.,Swing, b.,Stop, c.,Emergency,Stop, d.,Travel,-,ANSWER,a.

8.,Who,should,an,operator,respond,to,a,"stop",signal,from?a.,Appointed,signal,person,only, b.,Project,manager,only, c.,Superintendent,only, d.,Anyone,-,ANSWER,d. 2 / 3

9.,Which,area,do,truck,cranes,without,a,5th,outrigger,generally,have,no,lifting,capacity,unless,th e,manufacturer,states,otherwise?a.,The,side, b.,The,rear, c.,The,front, d.,The,outriggers,-,ANSWER,c.

10.,What,is,the,definition,of,"operating,radius?" a.,The,distance,from,the,base,of,the,boom,to,the,center,of,the,load,b.,The,distance,from,the,fro nt,of,the,crane,to,the,center,of,gravity,of,the,load, c.,The,distance,from,the,center,of,rotation,of,the,crane,to,the,center,of,the,load, d.,The,distance,from,the,center,of,rotation,of,the,crane,to,the,center,of,gravity,of,the,load,- ,ANSWER,d.

11.,What,applies,to,the,capacities,below,the,bold,line,shown,on,a,load,chart?a.,They,are,based,on,the,structural,strength,of,the,crane, b.,They,must,not,be,used, c.,They,are,based,on,the,stability,of,the,crane, d.,They,should,only,be,used,if,the,crane,is,set,up,on,outriggers,-,ANSWER,c.

12.,In,which,quadrant,are,rough,terrain,crane,capacities,generally,greater?a.,Over,the,front, b.,Over,the,rear, c.,Over,the,right,side, d.,Over,the,left,side,-,ANSWER,a.

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