1.Zoyenera pazitsulo zomatira. Zodziwikiratu mosayang'aniridwa.
2. Kutumiza zinthuzo mokhazikika, mwamphamvu komanso molingana mwa kugwedezeka ndi kuzungulira. Palibe alamu yakuthupi (ngati mukufuna).
3. Matalikidwe osinthika kuti aziwongolera kuyenda.
4.Electromagnet mtundu kuphatikiza makina kugwedera kukankhira, kapangidwe kosavuta, yosavuta komanso yosavuta kukhazikitsa ndi kukonza.
5.Simple structureeasy kukhazikitsa ndi kukonza,otsika mtengo kukonza, moyo wautali utumiki.