Official Answer
Answer
Zobba masu riƙe da karkace sukan haɗa da ƙaramin daraja a ƙarshen don sauƙaƙe cirewa tare da sukudireba. A cikin turbomachinery mai sauri (misali, turbochargers), wannan ƙananan rashin daidaituwa na iya haifar da gagarumin rawar jiki. Don magance wannan, injiniyoyi za su iya ƙayyade zoben 'daidaitacce', wanda ke ƙara adadin ramuwa ko daraja ta biyu $180^{\circ}$ daga farkon. Dole ne a ƙididdige ƙarfin centrifugal $ F_c = m \cdot r \cdot \ omega^2$ don ƙarar daraja, kuma taron dole ne a daidaita shi sosai bayan an shigar da zoben don tabbatar da bin ƙa'idodin G-grade.
