Majenereta ndi zida zamakina zomwe zimasinthira mphamvu zina kukhala mphamvu zamagetsi. Amayendetsedwa ndi turbine yamadzi, turbine ya nthunzi, injini ya dizilo kapena makina ena amphamvu ndikusintha mphamvu yopangidwa ndi madzi oyenda, kuyenda kwa mpweya, kuyaka kwamafuta kapena nyukiliya kukhala mphamvu yamakina yomwe imaperekedwa ku jenereta, yomwe imasinthidwa kukhala mphamvu yamagetsi.
Ma jenereta amagwiritsidwa ntchito kwambiri pakupanga mafakitale ndi zaulimi, chitetezo cha dziko, sayansi ndi ukadaulo komanso moyo watsiku ndi tsiku. Majenereta amabwera m'njira zosiyanasiyana, koma mfundo zawo zogwirira ntchito zimachokera ku lamulo la electromagnetic induction ndi lamulo la electromagnetic force. Chifukwa chake, mfundo yayikulu pakumanga kwake ndi: ndi zida zoyenera zamaginito komanso zowongolera kuti apange maginito ozungulira maginito ozungulira ndi kuzungulira, kuti apange mphamvu yamagetsi, kuti akwaniritse cholinga chosinthira mphamvu. Jenereta nthawi zambiri imakhala ndi stator, rotor, kapu yomaliza ndi kubereka.
Stator imakhala ndi stator pachimake, kupiringa kwa waya, chimango ndi zigawo zina zomwe zimakonza magawowa.
Rotor imapangidwa ndi rotor core (kapena maginito, maginito choke) chokhotakhota, mphete ya alonda, mphete yapakati, mphete yolowera, fani ndi shaft yozungulira, etc.
Chophimba ndi mapeto chidzakhala stator wa jenereta, rotor chikugwirizana palimodzi, kotero kuti rotor akhoza azungulire mu stator, kuchita zoyenda kudula maginito mzere wa mphamvu, motero kupanga induction kuthekera, kudzera terminal kutsogolo, olumikizidwa mu kuzungulira, adzatulutsa panopa.
