DIESEL TECH ASE PRACTICE TEST
1 ELECTRICAL/ELECTRONIC
SYSTEMS EXAM WITH COMPLETE
SOLUTIONS
A bresistance btest bwas bperformed bon ban bopen btoggle bswitch band bthe bresult bis
b5.857 bmegohms. bTechnician bA bsays bthat bthe bswitch bis bfaulty bbecause bthe
breading bis bbeyond bthe bspecifications. bTechnician bB bsays bthat bthe bswitch bhas
bover b5 bmillion bohms bof bresistance. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-B. bB bonly
Which bof bthe bfollowing bconditions bcould bcause bthe bpower blocks bto bfail bto
boperate?
A. bBroken bconnector bat bthe bpower block bswitch
B. bClosed bpower block bcircuit bbreaker
C. bAn boversized bfuse
, D. bAn boversized bwire brepair bin bthe bpower block bcircuit b- bcorrect banswers b-A.
bBroken bconnector bat bthe bpower block bswitch
When busing ba b12 bvolt, bunpowered btest blamp bto btest bfor bvoltage, ball bof bthe
bfollowing bare btrue bEXCEPT:
A. bThe btest blamp bmay bbe bconnected bto bthe bbattery bground
B. bThe bbattery bshould bfirst bbe bdisconnected
C. bThe btest blamp bmay bbe bconnected bto ba bchassis bground
D. bThe btest blamp bwill bnot billuminate bwhen bprobed binto bthe bcircuit bat ba bpoint
bafter bthe bload b- bcorrect banswers b-B. bThe bbattery bshould bbe bdisconnected
After bremoving ba b30 bamp bcircuit bbreaker bfrom ba bfuse bpanel, ba btechnician
bchecks bcontinuity bacross bits bterminals bwith ba bdigital bmultimeter b(DMM).
bTechnician bA bsays bthat bthe bcurrent bfrom bthe bohmmeter bwill bopen bthe bcircuit
bbreaker. bTechnician bB bsays bthe bohmmeter bshould bread binfinity bif bthe bcircuit
bbreaker bis bgood. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-D. bNeither bA bnor bB
Technician bA buses ba btest blamp bto bdetect bresistance. bTechnician bB buses ba
bjumper bwire bwhen bverifying bthe boperation bof bcircuit bbreakers, brelays, band
bswitches. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-B. bB bonly
Technician bA bsays bthat ba bcharge bindicator blight bshould bcome bon bwith bthe
bkey bon, bengine boff. bTechnician bB bstates bthat bif bthe bindicator bis bnot bwith bthe
bengine brunning, bit bcan bbe bassumed bthat bthe bcharging bsystem bis bfunctioning
bproperly. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-A. bA bonly
Technician bA bsays bthat ban bamp bclamp bis ba buseful btool bto buse bwhen
bchecking bfor bkey-off bdrain. bTechnician bB bsays bthat ba bfaulty brectifier bbridge bin
bthe balternator bcould bcause bexcessive bkey-off bdrain. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-C. bBoth bA band bB
All bof bthese bconditions bwould bcause bthe bstarter bnot bto bcrank bthe bengine
bEXCEPT: b
A. bthe bbattery bis bnot bconnected bto bthe bstarter bmotor
1 ELECTRICAL/ELECTRONIC
SYSTEMS EXAM WITH COMPLETE
SOLUTIONS
A bresistance btest bwas bperformed bon ban bopen btoggle bswitch band bthe bresult bis
b5.857 bmegohms. bTechnician bA bsays bthat bthe bswitch bis bfaulty bbecause bthe
breading bis bbeyond bthe bspecifications. bTechnician bB bsays bthat bthe bswitch bhas
bover b5 bmillion bohms bof bresistance. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-B. bB bonly
Which bof bthe bfollowing bconditions bcould bcause bthe bpower blocks bto bfail bto
boperate?
A. bBroken bconnector bat bthe bpower block bswitch
B. bClosed bpower block bcircuit bbreaker
C. bAn boversized bfuse
, D. bAn boversized bwire brepair bin bthe bpower block bcircuit b- bcorrect banswers b-A.
bBroken bconnector bat bthe bpower block bswitch
When busing ba b12 bvolt, bunpowered btest blamp bto btest bfor bvoltage, ball bof bthe
bfollowing bare btrue bEXCEPT:
A. bThe btest blamp bmay bbe bconnected bto bthe bbattery bground
B. bThe bbattery bshould bfirst bbe bdisconnected
C. bThe btest blamp bmay bbe bconnected bto ba bchassis bground
D. bThe btest blamp bwill bnot billuminate bwhen bprobed binto bthe bcircuit bat ba bpoint
bafter bthe bload b- bcorrect banswers b-B. bThe bbattery bshould bbe bdisconnected
After bremoving ba b30 bamp bcircuit bbreaker bfrom ba bfuse bpanel, ba btechnician
bchecks bcontinuity bacross bits bterminals bwith ba bdigital bmultimeter b(DMM).
bTechnician bA bsays bthat bthe bcurrent bfrom bthe bohmmeter bwill bopen bthe bcircuit
bbreaker. bTechnician bB bsays bthe bohmmeter bshould bread binfinity bif bthe bcircuit
bbreaker bis bgood. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-D. bNeither bA bnor bB
Technician bA buses ba btest blamp bto bdetect bresistance. bTechnician bB buses ba
bjumper bwire bwhen bverifying bthe boperation bof bcircuit bbreakers, brelays, band
bswitches. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-B. bB bonly
Technician bA bsays bthat ba bcharge bindicator blight bshould bcome bon bwith bthe
bkey bon, bengine boff. bTechnician bB bstates bthat bif bthe bindicator bis bnot bwith bthe
bengine brunning, bit bcan bbe bassumed bthat bthe bcharging bsystem bis bfunctioning
bproperly. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-A. bA bonly
Technician bA bsays bthat ban bamp bclamp bis ba buseful btool bto buse bwhen
bchecking bfor bkey-off bdrain. bTechnician bB bsays bthat ba bfaulty brectifier bbridge bin
bthe balternator bcould bcause bexcessive bkey-off bdrain. bWho bis bcorrect?
A. bA bonly
B. bB bonly
C. bBoth bA band bB
D. bNeither bA bnor bB b- bcorrect banswers b-C. bBoth bA band bB
All bof bthese bconditions bwould bcause bthe bstarter bnot bto bcrank bthe bengine
bEXCEPT: b
A. bthe bbattery bis bnot bconnected bto bthe bstarter bmotor
