EXAM question and answers latest 2024 VERI
p p p p p p p
FIED & GRADED A+
p p p
NACEp2008pStudentpManual!pST
ARTpOFpCHAPTERp1
Corrosionpispanpelectrochemicalpprocesspinvolving
A) flowpofpprotonspandpelectrons
B) flowpofpneutronspandpions
C) flowpofpprotonspandpions
D) flowpofpelectronspandpions
E) flowpofpresistancepandpresistivityp-pAnswer-pd
Metalplossporpcorrosionpoccurspatpthe
A) cathode
B) anode
C) electronicppath
D) metallicppathp-pAnswer-pb
Whatparepthepfourppartspofpthepcorrosionpcell
A) anode,presistor,pelectrolyte,pmetallicppath
B) anode,pcathode,pelectron,pelectronicppath
C) anode,pcathode,pelectrolyte,pmetallicppathp-pAnswer-pc
TrueporpFalsep(tporpf):
Ionspexistponlypinpthepelectrolyte?p-pAnswer-pt
,Electronspflowpinpapcorrosionpcellpbypwhichpofpthepfollowingppaths?
A) anodeptopcathodepviapelectrolyte
B) cathodeptopanodepviapelectronicppath
C) anodeptopcathodepviapelectronicppathp-pAnswer-pc
DetailedpSurveypFrequencypshouldpbepaccordingptopDOT
A) oncepperpcalendarpyearpnotptopexceedpanp15-monthpinterval
B) oncepperpcalenderpyear
C) oncepperpcalenderpyearpnotptopexceedpanp18-monthpintervalp-pAnswer-pa
InterferencepControlpDrainagepBondpinspectionpfrequencypshouldpbepaccordingptopDOT
A) oncepperpcalenderpyearpnotptopexceedpanp15-monthpinterval
B) sixptimerpperpcalenderpyearpnotptopexceedp2.5pmonthpintervalsp-pAnswer-pb
RectifierpInspectionpFrequencypshouldpbepaccordingptopDOT
A) oncepperpcalenderpyearpnotptopexceedpanp15-monthpinterval
B) sixptimerpperpcalenderpyearpnotptopexceedp2.5pmonthpintervalsp-pAnswer-pb
TrueporpFalsep(tporpf)pweatherpconditionspshouldpbepnotedpinpthepdatapsheetsp-pAnswer-pt
Measurementspmustpincludepthepaccurateprecordingpofpthe:
IpValue
II Polarity
III Units
IV Typepofpreferencepelectrode,pwherepapplicable
,A) I,pII,pIII
B) III,pIV
C) I,pII,pIII,pIVp-pAnswer-pc
TrueporpFalsep(tporpf)
Thepnamepandpserialpnumberspofpallpinstrumentspdoespnotphaveptopbepincludedpinpthepdatap
sheetsp-pAnswer-pf
Thepnamepandpserialpnumberspofpallpinstrumentspusedpshouldpbepincludedpinpthepdatapsheet
s
Solvepthepcircuitpproblemp->
Answers:
R2=p5pohmspIt
=p3A
I1=p1Ap
V1=2V
Atpthepcathodicpsurfacepinpapcorrosionpcell,pthepelectronspfrompthep meetp ionspfrompthepsolution.
A) cathode,phydrogen
B) cathode,pOH-
C) anode,phydrogen
D) anode,pOH-p-pAnswer-pc
Oxidationpofpthepmetalpoccurspatpthep
surfacespandpreductionpofp ionspoccurspatpthep .
, A) anodic,phydrogen,pcathodes
B) cathode,pOH-,panodic
C) anodic,pOH-,pcathodes
D) cathode,panodic,pelectrolyte
E) cathode,phydrogen,pelectrolytep-pAnswer-pa
Trueporpfalse
Ispoxidationpnecessarilypassociatedpwithpoxygen?p-pAnswer-pf
Currentpflowpinpapcorrosionpcellpflowspwhichppath:
A) anodeptopmetallicppathptopcathode
B) anodeptopelectronicppathptopcathode
C) cathodeptopmetallicptopanode
D) cathodeptopelectrolyteptopanode
E) anodeptopelectrolyteptopcathode
Voltagepispthepmeasurepofpthepelectrochemicalpdifferencepbetweenptwopelectrodesp
inpanpelectrolytep-pAnswer-pe
ispthepmeasurepofpthepelectrochemicalpdifferencepbetweenptwopelectrodesp
inpanpelectrolyte
A) current
B) resistance
C) error
D) ohms
E) ohms-cm