2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yog lawv hloov pauv, yuav muaj qhov tsis zoo. Yog tias cov ncej ntawm koj lub voltmeter txuas raug raug, nws muaj peev xwm ua rau lub roj teeb raug kev txom nyem ib qho tshwm sim hu ua "polarity reversal". Qhov no yog qhov tshwm sim tsis tshua muaj tshwm sim thaum kawg ntawm kev tso tawm nrog 2 lossis ntau lub roj teeb hauv koob.
Dab tsi yog qhov tsis zoo ntawm qhov ntsuas qhov ntsuas?
Ib qhov tsis zoo yog tus txheeb ze tshaj ntawm electrons piv rau lwm qhov taw tes. Yog tias 0 V tsis muaj hluav taws xob. Qhov hluav taws xob tsis zoo yog qhov dhau ntawm cov hluav taws xob thiab qhov hluav taws xob zoo yog qhov tsis muaj hluav taws xob.
Vim li cas multimeter qhia tsis zoo tam sim no?
Yog tias koj siv lub tam sim no hla lub resistor uas ua rau muaj qhov hluav taws xob ntawm qhov tsis sib xws, koj tuaj yeem pom qhov tsis zoo. Cov kev tiv thaiv siab dua siv qhov qis dua tam sim no, los tsim cov voltage. Qhov no txhais tau tias lawv muaj kev cuam tshuam ntau dua.
txhais li cas yog tias qhov hluav taws xob tsis zoo?
Note: Qhov voltage polarity qhia nyob rau hauv Circuit Court schematics tsuas yog muab ib tug kos npe rau convention los txhais cov voltages. Nws qhia qhov polarity txuam nrog qhov zoo voltage. Yog tias qhov hluav taws xob tsis zoo, lub polarity tsuas yog thim rov qab. Yog li ntawd, yog tias peb rov txhais qhov polarity ntawm qhov sib txawv voltage ntawm daim duab.
Vim li cas peb thiaj xav tau qhov tsis zoo?
Muaj feem yuav ua rau xob quaj tuaj yeem ua rau muaj qhov zoo ntawm cov khoom sivCircuit Court. Txij li thaum tsis muaj hluav taws xob tsis zoo muaj qhov tsis muaj hluav taws xob, nws tuaj yeem cuam tshuam cov nqi zoo uas tuaj yeem zam kev ua kom sov.
Pom zoo:
Puas yog qhov sharecropping system zoo vim li cas lossis vim li cas ho tsis?
-Sharecropping raws li keeb kwm kev coj ua nyob rau hauv American Soutic yog ntawm cov tswv yim qhev, txawm tias tsawg dua li niaj hnub ua liaj ua teb. Vim li cas thiaj tau sharecropping tsis ua haujlwm? Sharecropping khaws cia dub neeg txom nyem thiab nyob rau hauv ib txoj hauj lwm uas lawv tau zoo nkauj npaum li cas lawv tau hais los ntawm tus tswv av lawv ua haujlwm.
Qhov txawv ntawm qhov taw qhia thiab qhov taw qhia yog dab tsi?
Raws li nouns qhov txawv ntawm qhov taw qhia thiab qhov taw qhia yog tias indicative yog (cov qauv sau ntawv) qhov taw qhia qhov taw qhia thaum qhov taw qhia yog tus taw tes lossis qhov ntsuas uas qhia qee yam. Puas qhia thiab qhia tib yam?
Kev sib raug zoo txhais tau tias yog vim li cas lossis vim li cas ho tsis?
Kev ntsuas kev sib raug zoo rau kev sib raug zoo ntawm ob qhov sib txawv. Txawm li cas los xij, pom ob qhov sib txawv txav mus ua ke tsis tas txhais tau tias peb paub seb ib qho txawv txav ua rau lwm qhov tshwm sim. Qhov no yog vim li cas peb feem ntau hais tias "
Yuav ua li cas sau qhov zoo thiab qhov tsis zoo?
Cov kab lus 'pros and cons' yog ib qho luv luv ntawm lo lus Latin pro thiab contra, 'rau thiab tawm tsam', thiab tau siv rau hauv daim ntawv luv luv txij li xyoo pua 16th, raws li Oxford English Dictionary. Yuav ua li cas sau ntawv zoo?
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
