Poteinsu AC

Potentiometer yana daya da take masu ƙwarewa mai tsarki, kuma tana yi amfani da shi wajen maimaita sashi mai tsarki da sashi da aka sanar. Sashin da ake sanar zai iya zama DC ko AC. Hanyoyin da ake amfani da potentiometer na DC da potentiometer na AC suna ciki. Amma akwai farko mai yawa a cikin hanyoyin su, potentiometer na DC tana ci gaba da fadada sashi mai tsarki baki ɗaya. Kafin potentiometer na AC, tana ci gaba da fadada da kuma ƙaramin sashi mai tsarki ta haka tare da sashi mai sanar. Akwai biyu na'urar potentiometer na AC:

1. Potentiometer na na'ura.

2. Potentiometer na nahiyar kooɓi.

Potentiometer na Na'ura

A wuraren kungiyoyi, an amfani da duwatsu biyu don ci gaba da fadada da kuma ƙaramin sashi mai tsarki ta haka tare da sashi mai sanar. An samun yanayin a cikin duwatsu cewa zai iya karanta ƙaramin sashi har zuwa 3600. Tana da electrodynamometer na ammeter tare da potentiometer na DC da transformer na ƙaramin sashi, wanda ake amfani da shi tare da abokan sashi ɗaya.

A transformer na ƙaramin sashi, ana amfani da hukumomin biyu na steel na ring-shape da ake kofara kan ɗaya da ɗaya saboda hukumar. Wata ta fiye ta hanyar sashi, kuma wata ta biyu ta hanyar kofara tare da variable resistance da capacitor. Ruhunsa cewa kofara tare da variable resistance da capacitor shine ya faru sashi mai dace a potentiometer tare da ƙarin ƙoƙari.

Koƙarin hukumomin, ana da rotor na laminated da slots da winding wanda tana bayar da sashi zuwa slide-wire circuit na potentiometer. Idan karamin sashi ta bazuwar hukumomin, za a faru field na rotation a cikin rotor wanda za a faɗi e.m.f. a winding na rotor.

Ƙaramin sashi na rotor e.m.f. yana ɗauki ƙaramin sashi na rotor daga ƙaramin sashi na original, kuma yana ɗauka da sashi mai sanar. An samun hukumomin cewa fadada e.m.f. na induced a rotor zai ƙaru ƙarin amma ba zai canza ƙaramin sashi, kuma zai iya karanta shi a duwatsu da ake ƙirƙira a tsakiyar kungiyar.

E.m.f. na induced a winding na rotor tare da winding na stator 1 zai iya tabbatar da shi a cikin

E.m.f. na induced a winding na rotor tare da winding na stator 2,

Daga (1) da (2), muna samu

Saboda haka, e.m.f. na induced a winding na rotor tare da biyu na stator

Idan, Ø yana ƙarfi ƙaramin sashi. Zan iya karunta masu ƙwarewa a matsayin hanyar MCQs na electrical engineering.

Potentiometer na Nahiyar Kooɓi

A potentiometer na AC na nahiyar kooɓi, an cikakken biyu na potentiometers a cikin kungiya ɗaya kamar yadda aka nufin a figure. Wata ta fiye tana nufin potentiometer na in-phase, wanda ake amfani da shi don ci gaba da in-phase factor na sashi mai tsarki, kuma wata ta biyu tana nufin potentiometer na quadrature, wanda tana ci gaba da quadrature part na sashi mai tsarki. Sliding contact AA’ a potentiometer na in-phase da BB’ a potentiometer na quadrature suna amfani don samun current na ɗaukar a cikin kungiya. Ta ƙarfafa rheostat R da R’ da sliding contacts, current a potentiometer na quadrature zai zama sama da current a potentiometer na in-phase, kuma galvanometer na variable zai karanta null value. S1 da S2 suna nufin switches na changing signs, wadanda ake amfani don ƙarfafa polarity na test voltage idan ya buƙaci don ƙarfafa potentiometer. Akwai biyu na step-down transformers T1 da T2 wadanda suke cika potentiometer daga line, kuma suke bayar da earthed screens protection a cikin winding. Su ke bayar da 6 volts zuwa potentiometers.

Tana ƙarfafa don ci gaba da sashi mai tsarki, ita ce tana ƙofara terminals zuwa sliding contacts AA’ tare da selector switch S3. Ta ƙarfafa a sliding contacts da rheostat, duk kungiya zai ƙarfafa, kuma galvanometer zai karanta zero a lokacin ƙarfafa. Tana samun in-phase component VA na sashi mai tsarki tare da potentiometer na in-phase, kuma quadrature component VB tana samun tare da potentiometer na quadrature.

Saboda haka, resultance voltage na coordinate AC potentiometer shine

Kuma ƙaramin sashi tana nufin

Ayoyinta na Potentiometer na AC

1. Ci gaba da self-inductance.

2. Calibration of voltmeter.

3. Calibration of Ammeter.

4. Calibration of watt meter.

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