Video: Yuav ua li cas DC cov cav tov raug cais raws li kev ua kom zoo siab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
DC tshuab feem ntau yog cais nyob rau hauv lub hauv paus ntawm lawv teb kev zoo siab txoj kev. Qhov no ua rau ob pawg dav dav dc cov cav tov ; (i) Sib cais zoo siab thiab (ii) Tus kheej zoo siab. Nyob rau hauv ib tug self-excited hom DC lub tshuab hluav taws xob , teb winding yog energized los ntawm tam sim no ua los ntawm lawv tus kheej.
Raws li txoj cai, kev faib tawm ntawm DC tshuab yog dab tsi?
Muaj ob hom ntawm excitation hauv D. Cmachine . cais excitation, thiab self-excitation.
Lub hom phiaj tseem ceeb ntawm DC tshuab yog:
- cais zoo siab d.c. tshuab.
- Shunt qhov txhab los yog shunt tshuab.
- Series mob los yog series tshuab.
- Compound lub qhov txhab los yog compound tshuab.
Ib sab saum toj no, muaj pes tsawg hom DC tshuab muaj thiab lawv faib li cas? Cov DC tshuab tuaj yeem yog cais ua ob hom uas yog DC motors zoo li DC cov tshuab hluav taws xob. Feem ntau ntawm DC tshuab yog sib npaug rau AC tshuab vim lawv suav nrog AC dej ntws zoo li qub AC voltages hauv lawv. Cov zis ntawm lub DCmachine yog DC output vim lawv hloov AC voltage rau DC hluav taws xob.
Ib sab ntawm qhov no, txhais li cas los ntawm excitation hauv DC tshuab?
Kev zoo siab yog cov txheej txheem ntawd txuam nrog thefield system, wherein dc ua Tam sim no ntws los ntawm winding inpoles tsim magnetic polarity. Kev sib txuas hluav taws xob ntawm lub teb winding mus rau armature winding cia peb faib dcmotors.
Lub tshuab hluav taws xob DC sib cais ua haujlwm li cas?
Hauv ib cais zoo siab (S. E.) tshuab, fieldwinding txuas nrog a cais voltage qhov chaw thaum, nyob rau hauv tus kheej zoo siab generator teb winding yog txuas nrog hla lub armature terminals (muab nws zoo siab tam sim no).
Pom zoo:
Nws txhais li cas thaum kev sib raug zoo ntawm kev sib raug zoo ua kev cuam tshuam?
Kev sib raug zoo ntawm ob tus neeg uas txhua tus neeg nyob ntawm thiab tau txais kev txhawb zog, txawm tias muaj txiaj ntsig lossis kev puas tsuaj, los ntawm lwm tus. ib qho kev sib cuam tshuam lossis kev sib raug zoo ntawm ob tus neeg, pab pawg, thiab lwm yam
Dab tsi yog qhov kev sib raug zoo ntawm kev ua lej ntawm qhov kev nyuaj siab khov kho thiab Mollality?
Kev nyuaj siab qhov chaw khov kho yog cov cuab yeej sib koom ua ke pom hauv cov kev daws teeb meem uas tshwm sim los ntawm kev qhia txog cov kuab tshuaj molecules rau cov kuab tshuaj. Cov ntsiab lus khov ntawm cov kev daws yog tag nrho qis dua li cov kuab tshuaj ntshiab thiab yog ncaj qha proportional rau molality ntawm cov kuab tshuaj
Vim li cas nws tseem ceeb uas peb txoj kev nkag siab txog kev tshawb fawb txog kev sib raug zoo txuas ntxiv mus?
Kev nthuav dav thiab kev loj hlob ntawm kev tshawb fawb txog kev sib raug zoo yog qhov tsim nyog vim nws pab txhawb koj txoj kev sib raug zoo thiab kev sib raug zoo nrog cov neeg hauv zej zog. Thaum koj nyob nrog cov neeg koj yuav tsum nkag siab lawv thiab social science pab koj ua li ntawd
Koj yuav ua li cas thiaj paub tias kev sib raug zoo yog qhov zoo lossis tsis zoo?
Qhov zoo correlation coefficient txhais tau hais tias raws li tus nqi ntawm ib qho kev sib txawv nce, tus nqi ntawm lwm qhov sib txawv nce; raws li ib tug txo qhov qis dua. Qhov tsis zoo correlation coefficient qhia tau hais tias raws li ib qho kev sib txawv nce, qhov txo qis, thiab vice-versa
Nws txhais li cas kom muaj kev sib raug zoo tsis zoo?
Ib qho kev sib raug zoo tsis zoo txhais tau hais tias muaj kev sib raug zoo ntawm ob qhov sib txawv - thaum ib qho sib txawv, qhov sib txawv nce. Lub vice versa yog qhov tsis zoo correlation ib yam nkaus, nyob rau hauv uas ib tug kuj nce mus nce los thiab lwm yam txo