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
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
