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Exam (elaborations)

CSN HVAC Excellence: Electrical Questions and Answers 2025 Secure Pass

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CSN HVAC Excellence: Electrical Questions and Answers 2025 Secure Pass

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HVAC Excellence - ELECTRICITY
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HVAC Excellence - ELECTRICITY








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Institution
HVAC Excellence - ELECTRICITY
Course
HVAC Excellence - ELECTRICITY

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Uploaded on
May 9, 2025
Number of pages
1
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers

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  • csn hvac excellence electrical questions and answ

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CSN HVAC Excellence: Electrical Questions
and Answers 2025 Secure Pass
WhenAtroubleshootingAtheAA/CAsystemAinAtheAschematic,AtheAfollowingAconditionsAareA
found.ATheAthermostatAcontactsAareAclosed.ATheAcompressorAandAcondenserAfanAareAnotA
running.ATheAblowerAmotorArunning.AThisAcouldAbeAcausedAby:A-ACORRECTAANSWERSA-
aAfaultyAblowerAmotor/blowerArelay
WhenAtroubleshootingAtheAA/CAsystemAinAtheAschematic,AtheAfollowingAconditionsAareAfou
nd.ATheAthermostatAcontactsAareAclosed.ATheAcompressorAandAcondenserAfanAareAnotArun
ning.ATheAblowerAmotorAisArunning.AThisAcouldAbeAcausedAby:A-ACORRECTAANSWERSA-
theAHP,ALP,Aoverloads,AorAoilApressureAswitchAareAopen
ToAdischargeAaAcapacitorApriorAtoAohmmeterAtestingA-ACORRECTAANSWERSA-
useAaA15k/20kAohm,A2AtoA5AwattAresistorAacrossAtheAterminals
AcceptableAtemporaryAreplacementAforAaArunAcapacitorAratedAatA35MFDAatA440VACA-
ACORRECTAANSWERSA-37.5MFDAatA440VAC

TheAsynchronousAspeedAofAaAfourApoleA60AHzAsingleAphaseAmotorAisA-
ACORRECTAANSWERSA-1800ARPM

ExcessiveAcurrentAcanAbeAcausedAbyA-ACORRECTAANSWERSA-shortAcircuit
AAdeviceAwithAoverloadAprotectionAusedAtoAcontrolAaAmotorAisAaA-ACORRECTAANSWERSA-
lineAstarter
replaysAareAgenerallyAusedAtoAcontrolAinductiveAloadsAupAtoA___AampsA-
ACORRECTAANSWERSA-25

ContactorAareAratedAaccordingAtoAtheAmaxAamperageAthroughAtheA-
ACORRECTAANSWERSA-contacts

WhatAisAtheAminimumAnumberAofAwiresArequiredAbetweenAtwoAStart/StopApushAbuttonAcont
rolsA-ACORRECTAANSWERSA-3
IfAcontactsAbecomeAbadlyApitted,AitAisAacceptableAtoA-ACORRECTAANSWERSA-
replaceAtheAcontactsAorAcontrol
TheAthermalAoverloadAcontactsAonAaAlineAstarterAareAusuallyA____AresetA-
ACORRECTAANSWERSA-manual

TheA____AdrawingAillustratesAwereAtheAcomponentsAareAlocatedAinAsmallAappliancesA-
ACORRECTAANSWERSA-pictorial

WhatAmotorAisAtheAmostAenergyAefficientA-ACORRECTAANSWERSA-ECM
ResistanceAcanAbeAcalculatedAbyA-ACORRECTAANSWERSA-EAdividedAbyAI
VoltageAcanAbeAcalculatedAbyA-ACORRECTAANSWERSA-IAxAR
AnAohmmeterAshouldAneverAbeAconnectedAtoA-ACORRECTAANSWERSA-
aAchargedAcapacitorAuntilAitAhasAbeenAdischarged
WhichAofAtheAfollowingAwouldAbeAconsideredAanAinductiveAload?A-
ACORRECTAANSWERSA-electricAmotor

TheAvoltageAtoAgroundAofAaA"highAleg"AorA"stingerAleg"AonAaAthreeAphaseAopenADeltaAsyste
mAwillAbeAaroundA-ACORRECTAANSWERSA-208
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