Official Answer
Answer
Nkuko isoko yumuraba ifunitse, impinga yumurambararo iringaniye, bigatuma hagati ya diameter $ D_m $ yaguka cyane. Kwaguka gushobora kugereranywa ukoresheje formula $ \ Delta D = 0.02 \ cdot \ frac {(L_f - L_w)} {N} $, aho $ L_f $ nuburebure bwubusa naho $ L_w $ nuburebure bwakazi. Niba itandukaniro riri hagati ya diametre yinyuma yisoko na bore bidahagije, isoko izahambira, biganisha kumyitwarire idahwitse yimyitwarire no guhitana. Ibishushanyo-bisobanutse neza muburyo bwo kohereza ibinyabiziga bisaba kubara uku kwaguka kugirango impeshyi ikomeze kugenda-yubusa mu mikorere yayo.
