Cm 2112 Exam With 100% Correct
Answers
True dor dFalse dAggregate d"soundness dtest" dincludes dtesting dthe ddurability dof
daggregate dwhen dsubjected dto dcycles dof dwetting dand ddrying, dof dfreezing dand
dthawing. d- dCORRECT✅✅True
All dof dthe dfollowings dare daggregate dphysical dtests, dEXCEPT dFOR:
Question d2 dAnswer
a.
Aggregate dangularity
b.
Soundness dtest
c.
Los dAngeles dabrasion dtest
d.
Acid dsolubility dtest d- dCORRECT✅✅D. dAcid dSolubility dtest
If da dlow dscreening defficiency dis dpermissible, dthe dactual dcapacity dof da dscreen dwill
dbe d..... dthe dvalues dgiven din dthe dscreen dcapacity dchart.
Question d3 dAnswer
a.
higher dthan
b.
lower dthan
c.
Equal dto d- dCORRECT✅✅higher dthan
In dgeneral, d.... daggregates dare dtypically dpreferred dfor dconcrete dproduction, dand d...
daggregate dare dpreferred dfor dasphalt dproduction.
Question d4 dAnswer
a.
round/natural d- dangular/crushed
b.
round/natural d- dround/natural
c.
angular/crushed d- dround/natural
d.
angular/crushed d- dangular/crushed d- dCORRECT✅✅a.
round/natural d- dangular/crushed
, Petrographic dexamination dof daggregate dinvolves da ddetailed dmineralogical danalysis
dto didentify dthe daggregate's drock dtype, dtexture, dand dpotential dfor ddeleterious
dreactivity.
Question d5 dAnswer
a.
True
b.
False d- dCORRECT✅✅True
Singe drotor dimpact dcrushers dproduce da dcubical dproduct dbut dare deconomical donly
dfor d"low-abrasion" dfeeds.
a.
True
b.
False d- dCORRECT✅✅True
The d"capacity" dof da dscreen dis dthe dtotal damount dof dmaterial dfed dand dpassed dover
dits dsurface.
a.
True
b.
False d- dCORRECT✅✅False
These dare dthe dmost dcommonly dused dimpact dcrushers:
a.
Hammer dmills
b.
Horizontal dshaft dimpactor d(HSI)
c.
Vertical dshaft dimpactor d(VSI)
d.
Double-roll dimpactor d- dCORRECT✅✅Hammer dmills
This dtype dof dcrusher dreceives dthe dstone ddirectly dfrom dthe dexcavation dafter
dblasting dand dinitially dreduces dthe dstone dsize.
a.
Roll dcrusher
b.
Primary dcrusher
c.
Answers
True dor dFalse dAggregate d"soundness dtest" dincludes dtesting dthe ddurability dof
daggregate dwhen dsubjected dto dcycles dof dwetting dand ddrying, dof dfreezing dand
dthawing. d- dCORRECT✅✅True
All dof dthe dfollowings dare daggregate dphysical dtests, dEXCEPT dFOR:
Question d2 dAnswer
a.
Aggregate dangularity
b.
Soundness dtest
c.
Los dAngeles dabrasion dtest
d.
Acid dsolubility dtest d- dCORRECT✅✅D. dAcid dSolubility dtest
If da dlow dscreening defficiency dis dpermissible, dthe dactual dcapacity dof da dscreen dwill
dbe d..... dthe dvalues dgiven din dthe dscreen dcapacity dchart.
Question d3 dAnswer
a.
higher dthan
b.
lower dthan
c.
Equal dto d- dCORRECT✅✅higher dthan
In dgeneral, d.... daggregates dare dtypically dpreferred dfor dconcrete dproduction, dand d...
daggregate dare dpreferred dfor dasphalt dproduction.
Question d4 dAnswer
a.
round/natural d- dangular/crushed
b.
round/natural d- dround/natural
c.
angular/crushed d- dround/natural
d.
angular/crushed d- dangular/crushed d- dCORRECT✅✅a.
round/natural d- dangular/crushed
, Petrographic dexamination dof daggregate dinvolves da ddetailed dmineralogical danalysis
dto didentify dthe daggregate's drock dtype, dtexture, dand dpotential dfor ddeleterious
dreactivity.
Question d5 dAnswer
a.
True
b.
False d- dCORRECT✅✅True
Singe drotor dimpact dcrushers dproduce da dcubical dproduct dbut dare deconomical donly
dfor d"low-abrasion" dfeeds.
a.
True
b.
False d- dCORRECT✅✅True
The d"capacity" dof da dscreen dis dthe dtotal damount dof dmaterial dfed dand dpassed dover
dits dsurface.
a.
True
b.
False d- dCORRECT✅✅False
These dare dthe dmost dcommonly dused dimpact dcrushers:
a.
Hammer dmills
b.
Horizontal dshaft dimpactor d(HSI)
c.
Vertical dshaft dimpactor d(VSI)
d.
Double-roll dimpactor d- dCORRECT✅✅Hammer dmills
This dtype dof dcrusher dreceives dthe dstone ddirectly dfrom dthe dexcavation dafter
dblasting dand dinitially dreduces dthe dstone dsize.
a.
Roll dcrusher
b.
Primary dcrusher
c.
