ngongo maitai tui tika Ko te auau whakakorikori he taurite ki te putake tapawha o te kaha me te inductance i roto i te ara iahiko whakahihiri, he rite ranei ki te pakiaka tapawha o te ngaohiko me te naianei.Ka rite ki te roa rite te pūnga, inductance ranei ngaohiko me te nāianei i roto i te koropiko e huri, ka taea te huri i te auau excitation ki te whakatutuki i te mana Te kaupapa o te pāmahana fehokotaki'anga.I tua atu, ka taea hoki te whakatutuki i te paanga o te wera ma te whakatika i te tere tere.

Me noho tata ki te tuunga o te roera whakakoi i te reanga teitei.Mena kei te tawhiti atu te mowhiti whakauru mai i te roera pupuhi, ka roa ake te wa whakawera whai hua, he whanui te rohe e pa ana ki te wera, ka heke te kaha o te weld.Engari, ko te taha o te weld kaore i te wera nui, a he kino te ahua i muri i te tangohanga.

Ko te parenga he kotahi, he roopu ranei o nga rakau autō motuhake mo te paipa paipa.Ko te waahi whakawhiti o te parenga kia kaua e iti iho i te 70% o te waahanga whakawhiti o te diameter o roto o te putorino maitai.Ko tana mahi ko te hanga i te kohanga hiko hiko i waenga i te mowhiti whakauru, te taha o te ngongo ngongo paatea me te pae autō, me te whakaputa i te paanga tata.Ko te wera o naianei e kukū ana ki te taha o te taha o te tuitui ngongo, ka whakamahanahia te taha o te ngongo ki te pāmahana wea.Toia te parenga i roto i te ngongo pātea ki te waea, me tona tūranga pokapū kia āhua rite tata te pokapū o te roera kotēhia.I te tiimatanga, na te tere o te nekehanga o te ngongo, ka nui te mau o te parenga i te waku o te pakitara o roto o te ngongo, me whakakapi tonu.