Lub luag haujlwm tseem ceeb ntawm lub cev muaj zog yog muab lub zog tsav yog cov khoom siv kho tshuab ua haujlwm.
Lub cev muaj zog yog hais txog cov khoom siv hluav taws xob uas tuaj yeem hloov lossis hloov hluav taws xob raws li txoj cai ntawm electromagnetic induction. Lub cev muaj zog yog ib hom hluav taws xob hluav taws xob tuaj yeem hloov mus rau hauv lub tshuab hluav taws xob.
Lub cev muaj zog siv lub zog coil los ua kom muaj qhov sib nqus sib nqus thiab ua raws li rotor tawb hom kaw aluminium thav duab los tsim lub magneto-electric rotating torque. Nws muaj cov lus teb ceev ceev, loj pib torque, thiab tuaj yeem muab cov ntsuas torque los ntawm xoom mus rau qhov ntsuas ceev.
Txij li thaum lub cev muaj zog yuav tsum tsim kom muaj lub zog torque tsis tu ncua ntawm qhov ntsuas load, lub armature thiab rotor magnetic teb yuav tsum tau khaws cia ntawm qhov tsis tu ncua 90 °, uas yuav tsum muaj cov txhuam hniav thiab cov commutators. Raws li lub cev muaj zog rotates, txhuam thiab commutator tsim sparks thiab toners. Yog li ntawd, ntxiv rau qhov ua rau muaj kev puas tsuaj, kev siv kuj raug txwv.
