Ntawm lub teeb qaum uas yog cov hlau kub?

Cov txheej txheem:

Ntawm lub teeb qaum uas yog cov hlau kub?
Ntawm lub teeb qaum uas yog cov hlau kub?

Video: Ntawm lub teeb qaum uas yog cov hlau kub?

Video: Ntawm lub teeb qaum uas yog cov hlau kub?
Video: Tseem Ev Lub Kawm - Koos Loos 2024, Hlis ntuj nqeg
Anonim

Ribbed, grooved los yog striped side yog grounded (nruab nrab), smooth side is ungrounded (kub). Silver conductor yog grounded (tsis nruab nrab), tooj liab conductor yog ungrounded (kub).

Yuav ua li cas koj thiaj paub tias cov hlau twg kub ntawm lub teeb?

Saib cov xim ntawm cov xaim hauv koj lub teeb. Yog tias muaj peb cov xov hlau, cov hlau nrog dub rwb thaiv tsev yog kub. Yog koj muaj plaub, ces cov hlau dub thiab liab ob leeg kub.

Qhov twg yog cov hlau kub ntawm lub teeb hlua dub lossis dawb?

Hauv Tebchaws Meskas, peb lub ntsiab xim hauv ib txoj hlua yog xim dub, dawb thiab ntsuab. Dub yeej ib txwm yog cov hlau kub, dawb yog ib txwm nruab nrab, thiab ntsuab yog ib txwm av.

Koj tuaj yeem qhia tau li cas cov xov hlau twg yog qhov zoo thiab qhov tsis zoo thaum ob leeg paub meej?

Yog tias koj muaj ib lub xov hlau uas ob sab yog tib xim, uas feem ntau yog tooj liab, cov hlua uas muaj cov kab nrib pleb yog cov hlau tsis zoo. Khiav koj cov ntiv tes raws cov xov hlau los txiav txim seb sab twg muaj cov ribbing. Xav txog lwm cov hlau uas duQhov no yog koj txoj xov zoo.

Yuav ua li cas yog tias koj sib xyaw cov xov hlau kub thiab nruab nrab?

Qhov no tshwm sim thaum qhov kub thiab nruab nrab cov xaim tau tig mus ncig ntawm lub qhov hluav taws xob, lossis ntws los ntawm qhov hluav taws xob Rov qab polarity ua rau muaj kev phom sij txaus ntshai, tab sis feem ntau nws yog ib qho yooj yim kho. Ib tus kws ntsuas hluav taws xob $ 5 yuav ceeb toom rau koj txog qhov xwm txheej no, piv txwv tias koj muaj lub qhov hluav taws xob peb lub qhov hluav taws xob zoo.

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