INSTRUMENT TECH NCCER LATEST
EXAM 2025 QUESTIONS WITH
CORRECT ANWERS
1)WWhenWisWtheWBESTWtimeWtoWdocumentWeachWloopWcheckWforWcommissioningW?WA.WPrio
rWtoWtheWstartWofWinspectionW
B.WWhenWallWtestWandWinspectionWactivitiesWareWcompleteW
C.WWhenWupdatingWinformationWonWaWdailyWbasisW
D.WAtWtheWtimeWeachWtestWisWcompletedW-
W CORRECTW ANSWERSD.W AtW theW timeW eachWtestW isW completedW (INSTW LVL4)(12410-
16/WSectionW3.2.0)
2)WTeflonWpasteWmustWnotWbeWusedWonW:W
A.WNitrogenWserviceW
B.WNaturalWgasWserviceW
C.WWaterWserviceW
D.WOxygenWserviceW-WCORRECTWANSWERSD.WOxygenWserviceW(INSTWLVLW1W)(12109-
14/SectionW2.1.1)
3)WAW24VDCWpowerWsupplyWisWnotWworkingW.WWithWyourWmultimeterWyouWverifyWnoWDCWvol
tageW.WOnWtheW120VACWinputWyouWmeasureW120VWbetweenWhotWandWgroundW,WandW72VW
betweenWhotWandWneutralW.WWhatWisWtheWmostWlikelyWcauseWofWthisW?W
A.WLostWtheWgroundW
B.WLostWtheWhotW
C.WLostWtheWneutralW
D.WLostWtheWfuseW-WCORRECTWANSWERSC.WLostWtheWneutral
4)WGainWincreaseWwhenWtubeW:W
A.WBackWbendsWareWmadeW
B.WBendWradiusWincreasesW
C.WSizeWdecreasesW
D.WLongWradiusWelbowsWareWusedW-
W CORRECTW ANSWERSB.W BendW radiusW increasesW (INSTW LVLW 2)(12302-
15WsectionW2.1.1)
5)WAWtemperatureWmeasuringWdeviceWthatWproducesWaWvoltageWasWtheWtemperatureWchan
gesWisWaW/WanW:W
A.WRTDW
B.WThermistorW
C.WThermometerW
D.WThermocoupleW-WCORRECTWANSWERSD.WThermocoupleW(INSTWLVLW2)W(12110-
15WsectionW1.2.2)
6)WAWpressureWpipingWcodeWisWfoundWinW:W
A.WANSIWBW31.1W
B.WNECW690W.W
C.WOSHA1910W.W
D.WISAWSW5.1W-WCORRECTWANSWERSA.WANSIWBW31.1
7)WWhenWmarkingWtubingWforWcuttingW,WtheWpreferredWmethodWisW
,A.WScribeWaWmarkWintoWtheWtubeWwithWaWsharpWobjectW.W
B.WMarkWtheWtubeWwithWaWgreaseWpencilW
C.WMarkWtheWtubeWwithWaWfeltWtipWpenW
D.WMarkWtheWtubeWwithWaWcrayonW-
W CORRECTW ANSWERSC.W MarkW theW tubeW withW aW feltW tipW pen
8)WAnWexampleWofWdirectWmeasurementWindicatorWisWaW:W
A.WPressureWgaugeW
B.WBulbWthermometerW
C.WSightWglassW
D.WFlowmeterW-WCORRECTWANSWERSC.WSightWglass
9)WOnWtheWimageW,WhowWmanyWhandWvalvesWareWinstalledWonWTankW1201CW
A.W1W
B.W2W
C.W3W
D.W4W-WCORRECTWANSWERSC.W3
10)WWhatWisWtheWfirstWstepWinWtroubleshootingWaWproblemWinWaWsystemW?W
A.WTurnWoffWpowerWtoWtheWinstrumentW
B.WStimulateWanWinputW
C.WVerifyWthatWthereWisWaWproblemW
D.WStimulateWanWoutputW-WCORRECTWANSWERSC.WVerifyWthatWthereWisWaWproblem
11)WWhereWcanWtheWappropriateWelevationWofWanWinstrumentWbeWfoundW?W
A.WLocationWdrawingW
B.WPW&WIDW
C.WFlowWdiagramW
D.WLoopWdrawingW-WCORRECTWANSWERSA.WLocationWdrawing
12)WChemicalWcleaningWofWtubingWattachedWtoWinstrumentsWmayWcauseWdamageWtoWsens
orW
A.WElectronicsW
B.WPaintW
C.WElementsW
D.WBoltsW-WCORRECTWANSWERSC.WElements
13)WWhenWmakingW90W-
W degreeW tubingW bendW ,W allowanceW forW springbackW shouldW beW :W A.W 6W toW 8W degreesW
B.W4-5WdegreesW
C.W1WtoW3WdegreesW
D.W0WdegreesW-WCORRECTWANSWERSC.W1WtoW3Wdegrees
14)WCableWshieldsWshouldWbeWconnectedWtoWtheW:W
A.WSignalWgroundWreferenceWpointW
B.WGroundWatWeachWaccessibleWlocationW
C.WFirstWaccessibleWgroundingWelectrodeW
D.WRacewayWorWcableWtrayWinWwhichWtheWcableWisWroutedW-
W CORRECTW ANSWERSB.W GroundW atW eachW accessibleW location
15)WAnWemployeeWdeWenergizesWaWpieceWofWequipmentWbyWremovingWtheWpowerWplugWfro
mWtheWoutletW.WIfWtheWemployeeWcontinuesWtoWholdWonWtoWtheWpowerWplugWonceWremovedW
,WthisWemployeeWisWsaidWtoWhaveWwhatWtypeWofWcontrolWoverWtheWenergyWpotentialW?W
A.WIsolationWcontrolW
, B.WLockoutWtagoutW
C.WExclusiveWcontrolW
D.WRemoteWcontrolW-WCORRECTWANSWERSC.WExclusiveWcontrol
16)WAWcompressorWkeepsWblowingWaWPSVWforWtroubleshootingWaWtechnicianWshouldWstart
W lookingW atW
A.WPowerWswitchWsettingW
B.WPressureWswitchWdeadbandW
C.WLevelWswitchWsettingW
D.WFloatWswichWdeadbandW-WCORRECTWANSWERSB.WPressureWswitchWdeadband
17)WInWtheWfigureWprovidedWtheWpipeWlineWthatWcarriesWworkingWprocessWfluidWsuchWasWste
amWwaterWorWgasWisWlabeledWasW
A.WAW
B.WBW
C.WCW
D.WDW-WCORRECTWANSWERSA.WA
18)WAWheatWreactiveWdryerWisWproducingWdampWinstrumentWairWwhatWcouldWbeWaWsimpleWfi
xW
A.WReplaceWdesiccantW
B.WChangeWtoWaWdifferentWdesiccantW
C.WAdjustWtheWcycleWtimeW
D.WAddWaWsecondWsetWofWdryersW-WCORRECTWANSWERSC.WAdjustWtheWcycleWtime
19)WTypeWJWthermocoupleWextensionWwireWisW
A.WWhiteW&WredW
B.WYellowW&WredW
C.WBlueW&WredW
D.WGreenW&WredW-WCORRECTWANSWERSA.WWhiteW&Wred
20)WWhichWofWtheWfollowingWgasesWshouldWbeWusedWtoWpurgeWtubingWandWpipeWafterWclea
ningW
A.WargonW
B.WAirW
C.WNitrogenW
D.WheliumW-WCORRECTWANSWERSC.WNitrogen
21)WWhenWpressureWtestingW,WtheWrequiredWdocumentationWincludesW:W
A.WSpecificationWsheetsW
B.WTroubleshootingWflowWchartsW
C.WTemperatureW,WpressureW,WandWtestWmediumW
D.WRequiredWcorrectiveWmeasuresW-
W CORRECTW ANSWERSC.W TemperatureW ,W pressureW ,W andW testW medium
22)AnWairW-WtoW-WopenWvalveWusesW
aW:WA.WFailW-WinW-WpositionWactuatorW
B.WSpringW-WtoW-WopenWactuatorW
C.WDualWspringWactuatorW
D.WSpringW-WtoW-WcloseWactuatorW-WCORRECTWANSWERSD.WSpring-to-closeWActuator
23)WTheWMOSTWcommonWmethodWusedWtoWmeasureWtheWflowWofWliquidWinWaWpipeWisWtoWint
roduceWaWrestrictionWinWtheWpipeWandWmeasureWtheW:W
A.WVelocity
EXAM 2025 QUESTIONS WITH
CORRECT ANWERS
1)WWhenWisWtheWBESTWtimeWtoWdocumentWeachWloopWcheckWforWcommissioningW?WA.WPrio
rWtoWtheWstartWofWinspectionW
B.WWhenWallWtestWandWinspectionWactivitiesWareWcompleteW
C.WWhenWupdatingWinformationWonWaWdailyWbasisW
D.WAtWtheWtimeWeachWtestWisWcompletedW-
W CORRECTW ANSWERSD.W AtW theW timeW eachWtestW isW completedW (INSTW LVL4)(12410-
16/WSectionW3.2.0)
2)WTeflonWpasteWmustWnotWbeWusedWonW:W
A.WNitrogenWserviceW
B.WNaturalWgasWserviceW
C.WWaterWserviceW
D.WOxygenWserviceW-WCORRECTWANSWERSD.WOxygenWserviceW(INSTWLVLW1W)(12109-
14/SectionW2.1.1)
3)WAW24VDCWpowerWsupplyWisWnotWworkingW.WWithWyourWmultimeterWyouWverifyWnoWDCWvol
tageW.WOnWtheW120VACWinputWyouWmeasureW120VWbetweenWhotWandWgroundW,WandW72VW
betweenWhotWandWneutralW.WWhatWisWtheWmostWlikelyWcauseWofWthisW?W
A.WLostWtheWgroundW
B.WLostWtheWhotW
C.WLostWtheWneutralW
D.WLostWtheWfuseW-WCORRECTWANSWERSC.WLostWtheWneutral
4)WGainWincreaseWwhenWtubeW:W
A.WBackWbendsWareWmadeW
B.WBendWradiusWincreasesW
C.WSizeWdecreasesW
D.WLongWradiusWelbowsWareWusedW-
W CORRECTW ANSWERSB.W BendW radiusW increasesW (INSTW LVLW 2)(12302-
15WsectionW2.1.1)
5)WAWtemperatureWmeasuringWdeviceWthatWproducesWaWvoltageWasWtheWtemperatureWchan
gesWisWaW/WanW:W
A.WRTDW
B.WThermistorW
C.WThermometerW
D.WThermocoupleW-WCORRECTWANSWERSD.WThermocoupleW(INSTWLVLW2)W(12110-
15WsectionW1.2.2)
6)WAWpressureWpipingWcodeWisWfoundWinW:W
A.WANSIWBW31.1W
B.WNECW690W.W
C.WOSHA1910W.W
D.WISAWSW5.1W-WCORRECTWANSWERSA.WANSIWBW31.1
7)WWhenWmarkingWtubingWforWcuttingW,WtheWpreferredWmethodWisW
,A.WScribeWaWmarkWintoWtheWtubeWwithWaWsharpWobjectW.W
B.WMarkWtheWtubeWwithWaWgreaseWpencilW
C.WMarkWtheWtubeWwithWaWfeltWtipWpenW
D.WMarkWtheWtubeWwithWaWcrayonW-
W CORRECTW ANSWERSC.W MarkW theW tubeW withW aW feltW tipW pen
8)WAnWexampleWofWdirectWmeasurementWindicatorWisWaW:W
A.WPressureWgaugeW
B.WBulbWthermometerW
C.WSightWglassW
D.WFlowmeterW-WCORRECTWANSWERSC.WSightWglass
9)WOnWtheWimageW,WhowWmanyWhandWvalvesWareWinstalledWonWTankW1201CW
A.W1W
B.W2W
C.W3W
D.W4W-WCORRECTWANSWERSC.W3
10)WWhatWisWtheWfirstWstepWinWtroubleshootingWaWproblemWinWaWsystemW?W
A.WTurnWoffWpowerWtoWtheWinstrumentW
B.WStimulateWanWinputW
C.WVerifyWthatWthereWisWaWproblemW
D.WStimulateWanWoutputW-WCORRECTWANSWERSC.WVerifyWthatWthereWisWaWproblem
11)WWhereWcanWtheWappropriateWelevationWofWanWinstrumentWbeWfoundW?W
A.WLocationWdrawingW
B.WPW&WIDW
C.WFlowWdiagramW
D.WLoopWdrawingW-WCORRECTWANSWERSA.WLocationWdrawing
12)WChemicalWcleaningWofWtubingWattachedWtoWinstrumentsWmayWcauseWdamageWtoWsens
orW
A.WElectronicsW
B.WPaintW
C.WElementsW
D.WBoltsW-WCORRECTWANSWERSC.WElements
13)WWhenWmakingW90W-
W degreeW tubingW bendW ,W allowanceW forW springbackW shouldW beW :W A.W 6W toW 8W degreesW
B.W4-5WdegreesW
C.W1WtoW3WdegreesW
D.W0WdegreesW-WCORRECTWANSWERSC.W1WtoW3Wdegrees
14)WCableWshieldsWshouldWbeWconnectedWtoWtheW:W
A.WSignalWgroundWreferenceWpointW
B.WGroundWatWeachWaccessibleWlocationW
C.WFirstWaccessibleWgroundingWelectrodeW
D.WRacewayWorWcableWtrayWinWwhichWtheWcableWisWroutedW-
W CORRECTW ANSWERSB.W GroundW atW eachW accessibleW location
15)WAnWemployeeWdeWenergizesWaWpieceWofWequipmentWbyWremovingWtheWpowerWplugWfro
mWtheWoutletW.WIfWtheWemployeeWcontinuesWtoWholdWonWtoWtheWpowerWplugWonceWremovedW
,WthisWemployeeWisWsaidWtoWhaveWwhatWtypeWofWcontrolWoverWtheWenergyWpotentialW?W
A.WIsolationWcontrolW
, B.WLockoutWtagoutW
C.WExclusiveWcontrolW
D.WRemoteWcontrolW-WCORRECTWANSWERSC.WExclusiveWcontrol
16)WAWcompressorWkeepsWblowingWaWPSVWforWtroubleshootingWaWtechnicianWshouldWstart
W lookingW atW
A.WPowerWswitchWsettingW
B.WPressureWswitchWdeadbandW
C.WLevelWswitchWsettingW
D.WFloatWswichWdeadbandW-WCORRECTWANSWERSB.WPressureWswitchWdeadband
17)WInWtheWfigureWprovidedWtheWpipeWlineWthatWcarriesWworkingWprocessWfluidWsuchWasWste
amWwaterWorWgasWisWlabeledWasW
A.WAW
B.WBW
C.WCW
D.WDW-WCORRECTWANSWERSA.WA
18)WAWheatWreactiveWdryerWisWproducingWdampWinstrumentWairWwhatWcouldWbeWaWsimpleWfi
xW
A.WReplaceWdesiccantW
B.WChangeWtoWaWdifferentWdesiccantW
C.WAdjustWtheWcycleWtimeW
D.WAddWaWsecondWsetWofWdryersW-WCORRECTWANSWERSC.WAdjustWtheWcycleWtime
19)WTypeWJWthermocoupleWextensionWwireWisW
A.WWhiteW&WredW
B.WYellowW&WredW
C.WBlueW&WredW
D.WGreenW&WredW-WCORRECTWANSWERSA.WWhiteW&Wred
20)WWhichWofWtheWfollowingWgasesWshouldWbeWusedWtoWpurgeWtubingWandWpipeWafterWclea
ningW
A.WargonW
B.WAirW
C.WNitrogenW
D.WheliumW-WCORRECTWANSWERSC.WNitrogen
21)WWhenWpressureWtestingW,WtheWrequiredWdocumentationWincludesW:W
A.WSpecificationWsheetsW
B.WTroubleshootingWflowWchartsW
C.WTemperatureW,WpressureW,WandWtestWmediumW
D.WRequiredWcorrectiveWmeasuresW-
W CORRECTW ANSWERSC.W TemperatureW ,W pressureW ,W andW testW medium
22)AnWairW-WtoW-WopenWvalveWusesW
aW:WA.WFailW-WinW-WpositionWactuatorW
B.WSpringW-WtoW-WopenWactuatorW
C.WDualWspringWactuatorW
D.WSpringW-WtoW-WcloseWactuatorW-WCORRECTWANSWERSD.WSpring-to-closeWActuator
23)WTheWMOSTWcommonWmethodWusedWtoWmeasureWtheWflowWofWliquidWinWaWpipeWisWtoWint
roduceWaWrestrictionWinWtheWpipeWandWmeasureWtheW:W
A.WVelocity
