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NCCER Electrical level 2 module 1 alternating current Questions with correct answers

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NCCER Electrical level 2 module 1 alternating current Questions with correct answers

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NCCER Electrical level 2 module 1 alternating current
Questions with 100% Correct Answers | Updated &
Verified




What nis nthe nstep-down nturns nratio nof na ntransformer nwith n200 nturns nin nthe nprimary

nand n100 nturns nin nthe nsecondary? n- nANS-2:1




Opening nthe nsecondary ncircuit nof na ncurrent ntransformer nunder nload nwill ncause na

ndangerous nlevel nof n- nANS-induced nhigh nvoltage




What nis nthe nfrequency nof nan nAC nwaveform nthat ncompletes n20 ncycles nper nhalf

nsecond? n- nANS-40Hz




A ncircuit nhas na npeak nvoltage nof n275V. nWhat nis nthe naverage nvoltage nvalue? n-

nANS-175V

, Each nof nthree nequal ncapacitors nin nseries nhas n- nANS-one-third nthe napplied nvoltage




The nformula nfor ninductive nreactance nis n- nANS-XL n= n2πfL




What nis nthe ncurrent nflow nin na npurely nresistive nAC ncircuit nif nthe nresistance nis n15

nohms nand nthe nvoltage nis n150V? n- nANS-10A




If nthe narea nof nthe nplates nof na ncapacitor nis nincreased, nthe namount nof ncapacitance

n- nANS-increases




The nself-induced nvoltage nacross nan ninductance nis nproduced nby na nchange nin n-

nANS-current nwith nrespect nto ntime




A n30-microfarad ncapacitor nis nin nparallel nwith na n15-microfarad ncapacitor. nThe ntotal

ncapacitance nis n- nANS-45




One ntype nof nnonsinusoidal nwaveform nis nthe n- nANS-square nwave
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