Official Answer
Answer
Maɓuɓɓugan ruwan magudanar ruwa a cikin jeri (crest-to-crest) yana ƙara jimlar karkata $f_{total} = f_1 + f_2$ yayin da ake ajiye nauyin $P$ akai-akai. Hadarin a nan shi ne takure; idan tsayin kyauta zuwa diamita ya wuce 3:1, tari na iya karkata. Tari a layi daya (nest) yana ƙara nauyin $P_{total} = P_1 + P_2$ don jujjuyawar da aka bayar. Hadarin da ke tattare da tarawa iri ɗaya shine rarraba kaya mara daidaituwa idan raƙuman ruwa ba su daidaita daidai ba, yana haifar da matsananciyar damuwa. Jagoran da suka dace (shafts ko bores) sun zama tilas ga duk jeri-jefi don tabbatar da daidaitawar axial.
