Ma motors a AC (alternating current) ndi DC (direct current) ndi mitundu iwiri yodziwika bwino ya ma mota amagetsi omwe amagwiritsidwa ntchito pazinthu zosiyanasiyana. Ngakhale mitundu yonse ya ma motors imakhala ndi cholinga chimodzi chosinthira mphamvu yamagetsi kukhala mphamvu yamakina, imagwira ntchito mosiyanasiyana ndipo imakhala ndi mawonekedwe osiyana.
Kusiyanitsa kwakukulu pakati pa ma mota a AC ndi DC kuli pamtundu wamagetsi omwe amagwiritsa ntchito. Ma motors a AC adapangidwa kuti aziyenda pakusintha kwapano, zomwe zikutanthauza komwe kumasintha komweko nthawi ndi nthawi. Kumbali inayi, ma motors a DC amayendetsedwa ndi mphamvu yachindunji, komwe kumayenda kwamagetsi kumakhala kopanda unidirectional.
Kusiyanitsa kwina kwakukulu ndi momwe mphamvu ya maginito imapangidwira mu injini. Mu ma motors a AC, mphamvu ya maginito imapangidwa ndi njira yosinthira yomwe imadutsa pamakona a stator, yomwe imapangitsa kuti maginito azungulira. Maginito ozungulirawa amalumikizana ndi rotor kuti apange kuyenda. Mosiyana ndi izi, ma mota a DC amadalira maginito osatha kapena gawo lamagetsi lopangidwa ndi maginito kuti apange mphamvu yamaginito yozungulira.
Makina owongolera liwiro amasiyananso pakati pa ma AC ndi DC motors. Ma motors a AC nthawi zambiri amadalira kuwongolera pafupipafupi kuti asinthe liwiro, zomwe zimaphatikizapo kusintha kuchuluka kwa mphamvu yolowera. Mosiyana ndi izi, ma motors a DC amapereka chiwongolero chowongoka chowongoka kudzera pakuwongolera ma voliyumu.
Kuchita bwino komanso kukonza zofunikira ndizinthu zina zomwe zimasiyanitsa ma mota a AC ndi DC. Ma motors a AC nthawi zambiri amagwira ntchito bwino ndipo amafuna kusamalidwa pang'ono chifukwa chakusowa kwa maburashi ndi ma commutators, omwe ndi zida zodziwika bwino pama motors a DC. Komabe, ma mota a DC amadziwika chifukwa cha kuphweka kwawo komanso kuwongolera liwiro.
Mwachidule, kusiyana kwakukulu pakati pa ma motors a AC ndi DC kumachokera ku mtundu wamakono omwe amagwiritsa ntchito, njira yopangira maginito, njira zowongolera liwiro, komanso momwe amagwirira ntchito komanso zofunika kukonza. Kumvetsetsa kusiyanitsa kumeneku ndikofunikira pakusankha injini yoyenera kwambiri pamatchulidwe, chifukwa mtundu uliwonse uli ndi zabwino komanso zolephera zake.