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I-1, Ukuqulunqwa kwangaphambili, inkqubo yokuvelisa ngokugqibeleleyo, inkqubo yokulawula inkqubo engqongqo, ukuqinisekiswa komgangatho othembekileyo nozinzile

I-2, ukuqulunqwa okukodwa kuqinisekisa i-rubber elasticity effect

3, Isitywina esisebenzayo sombulula ingxaki yokuvuza kweoyile

I-4, ukusebenza kakuhle kobungqina be-oyile kunye nongcoliseko oluncinci kwi-oyile ye-transformer

I-5, Ukukhetha izinto ngononophelo kunye noyilo kakuhle kuqinisekisa isitywina esisebenzayo.