DIESEL TECH ASE PRACTICE TEST 1
ELECTRICAL/ELECTRONIC SYSTEMS EXAM
GRADED A+
1.Technician mA monly: mA mtechnician mconnects mone mlead mof ma mDMM
m(digital mmultimeter) mto mthe mpositive m(+) mterminal mof ma mbattery
mand mthe mother mmeter mlead mto mthe m"B" mterminal mof mthe mstarter
msolenoid mand mthen mcranks mthe mengine. mDuring mcranking, mthe
mvoltmeter mdisplays ma mreading mof m878 mmV.
Technician mA msays mthis mreading mindicates mthe mpositive mbattery
mcable mhas mvery mhigh mresistance.
Technician mB msays mthis mreading mindicates mthat mthe mstarter
m armature mis mdefective. mWho mis mright?
Technician mA
1 m/
m79
& mElectronic
, monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
2.Replace mthe mbattery: mWhen mperforming ma mload mtest mon ma mbattery,
ma mtechnician mfinds mthat mthe mbattery mvoltage mdrops mbelow
mspecifications. mWhich mof mthe mfollowing mis mthe mMOST mlikely mrepair?
a. Recharge mthe mbattery mand mreturn mit mto mservice
b.Recharge mthe mbattery mand mretest mit
c. Replace mthe mbattery
d.Replace mthe mvoltage mregulator
3.Technician mA monly: mTwo mtechnicians mare mdescribing mbattery
mcharging.
Technician mA msays mto mremove mthe msurface mcharge mfrom ma mrecently
mcharged mbattery mand mapply ma m300-ampere mload macross mthe
madapters mfor m15 mseconds.
Technician mB msays mto mremove mthe msurface mcharge mfrom mbatteries,
mwhich mhave mbeen min mstorage.
Who mis mright?
Technician mA
monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
2 m/
m79
& mElectronic
, 4.Technician mB monly: mTechnician mA msays mproper mstarter moperation
mdepends mon mthe mbattery mbeing mat ma m95% mcharge mand mbattery
mcables mbeing mof mthe mcorrect msize m(gauge) mand mhaving mno mmore
mthan m0.8-volt mdrop.
Technician mB msays mvoltage-drop mtesting mincludes mcranking mthe mengin
mmeasuring mthe mdrop min mvoltage mfrom mthe mbattery mto mthe mstarter,
mand mmeasuring mthe mdrop min mvoltage mfrom mthe mnegative mterminal mo
mthe mbattery mto mthe mengine mblock.
Who mis mright?
Technician mA
monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
5.Defective mstarter mdrive: mWhich mof mthe mfollowing mcould mcause mthe
mstarter mto mmake ma mwhining mnoise mwhen mengaged?
a. Defective mstarter mdrive
b.Defective msolenoid
c. Open mpull-in mwinding
d.Worn marmature mcommutator
6.Neither mTechnician mA mnor mB: mTwo mbulbs mare mconnected min
mparallel mto ma m12 mvolt mbattery. mAnother mbulb mis madded min
mparallel.
Technician mA msays mthat mthe mthird mbulb mwill mbe mdimmer mthan mthe
mother mtwo mbulbs mdue mto mreduced mcurrent mflow mthrough mthe mfilame
mof mthe mbulb.
Technician mB msays mthat mthe mamount mof mcurrent mflowing mfrom mthe
mbattery mwill mdecrease mdue mto mthe mextra mload.
Who mis mright?
Technician mA
monly
mTechnician mB
3 m/
m79
& mElectronic
, monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
7.Technician mB monly: mTwo mbulbs mare mconnected min mparallel mto ma m12
mvolt mbattery. mOne mbulb mhas ma mresistance mof m6 mohms mand mthe
mother mhas ma mresistance mof m2 mohms. mTechnician mA msays mthat monly
mthe m2 mohm mbulb mwill mlight mbecause mall mthe mcurrent mwill mflow
mthrough mthe m6 mohms mbulb.
Technician mB msays mthat mthe m6 mohm mbulb mwill mbe mdimmer
mthan mthe m2 mohm mbulb. mWho mis mright?
4 m/
m79
& mElectronic
ELECTRICAL/ELECTRONIC SYSTEMS EXAM
GRADED A+
1.Technician mA monly: mA mtechnician mconnects mone mlead mof ma mDMM
m(digital mmultimeter) mto mthe mpositive m(+) mterminal mof ma mbattery
mand mthe mother mmeter mlead mto mthe m"B" mterminal mof mthe mstarter
msolenoid mand mthen mcranks mthe mengine. mDuring mcranking, mthe
mvoltmeter mdisplays ma mreading mof m878 mmV.
Technician mA msays mthis mreading mindicates mthe mpositive mbattery
mcable mhas mvery mhigh mresistance.
Technician mB msays mthis mreading mindicates mthat mthe mstarter
m armature mis mdefective. mWho mis mright?
Technician mA
1 m/
m79
& mElectronic
, monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
2.Replace mthe mbattery: mWhen mperforming ma mload mtest mon ma mbattery,
ma mtechnician mfinds mthat mthe mbattery mvoltage mdrops mbelow
mspecifications. mWhich mof mthe mfollowing mis mthe mMOST mlikely mrepair?
a. Recharge mthe mbattery mand mreturn mit mto mservice
b.Recharge mthe mbattery mand mretest mit
c. Replace mthe mbattery
d.Replace mthe mvoltage mregulator
3.Technician mA monly: mTwo mtechnicians mare mdescribing mbattery
mcharging.
Technician mA msays mto mremove mthe msurface mcharge mfrom ma mrecently
mcharged mbattery mand mapply ma m300-ampere mload macross mthe
madapters mfor m15 mseconds.
Technician mB msays mto mremove mthe msurface mcharge mfrom mbatteries,
mwhich mhave mbeen min mstorage.
Who mis mright?
Technician mA
monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
2 m/
m79
& mElectronic
, 4.Technician mB monly: mTechnician mA msays mproper mstarter moperation
mdepends mon mthe mbattery mbeing mat ma m95% mcharge mand mbattery
mcables mbeing mof mthe mcorrect msize m(gauge) mand mhaving mno mmore
mthan m0.8-volt mdrop.
Technician mB msays mvoltage-drop mtesting mincludes mcranking mthe mengin
mmeasuring mthe mdrop min mvoltage mfrom mthe mbattery mto mthe mstarter,
mand mmeasuring mthe mdrop min mvoltage mfrom mthe mnegative mterminal mo
mthe mbattery mto mthe mengine mblock.
Who mis mright?
Technician mA
monly
mTechnician mB
monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
5.Defective mstarter mdrive: mWhich mof mthe mfollowing mcould mcause mthe
mstarter mto mmake ma mwhining mnoise mwhen mengaged?
a. Defective mstarter mdrive
b.Defective msolenoid
c. Open mpull-in mwinding
d.Worn marmature mcommutator
6.Neither mTechnician mA mnor mB: mTwo mbulbs mare mconnected min
mparallel mto ma m12 mvolt mbattery. mAnother mbulb mis madded min
mparallel.
Technician mA msays mthat mthe mthird mbulb mwill mbe mdimmer mthan mthe
mother mtwo mbulbs mdue mto mreduced mcurrent mflow mthrough mthe mfilame
mof mthe mbulb.
Technician mB msays mthat mthe mamount mof mcurrent mflowing mfrom mthe
mbattery mwill mdecrease mdue mto mthe mextra mload.
Who mis mright?
Technician mA
monly
mTechnician mB
3 m/
m79
& mElectronic
, monly
Both mTechnicians mA
mand mB mNeither
mTechnician mA mnor mB
7.Technician mB monly: mTwo mbulbs mare mconnected min mparallel mto ma m12
mvolt mbattery. mOne mbulb mhas ma mresistance mof m6 mohms mand mthe
mother mhas ma mresistance mof m2 mohms. mTechnician mA msays mthat monly
mthe m2 mohm mbulb mwill mlight mbecause mall mthe mcurrent mwill mflow
mthrough mthe m6 mohms mbulb.
Technician mB msays mthat mthe m6 mohm mbulb mwill mbe mdimmer
mthan mthe m2 mohm mbulb. mWho mis mright?
4 m/
m79
& mElectronic
