A shaft fitted with a flywheel rotates at 350 r.p.m. and drives a machine. The torque of the machine varies in a cyclic manner over a period of 2 revolutions. The torque rises from 250 N-m to 3500 N-m uniformly during 100° and remains constant for the following 180°. It then falls uniformly to 750 N-m during the next 100° and remains constant for the end cycle, the cycle is repeated thereafter. Determine the power required to drive the machine and percentage fluctuation in speed, if the driving torque applied to the shaft is constant and the mass of the flywheel is 300 kg with a radius of gyration of 450 mm.

A shaft fitted with a flywheel rotates at 350 r.p.m. and drives a machine. The torque of the machine varies in a cyclic manner over a period of 2 revolutions. The torque rises from 250 N-m to 3500 N-m uniformly during 100° and remains constant for the following 180°. It then falls uniformly to 750 N-m during the next 100° and remains constant for the end cycle, the cycle is repeated thereafter. Determine the power required to drive the machine and percentage fluctuation in speed, if the driving torque applied to the shaft is constant and the mass of the flywheel is 300 kg with a radius of gyration of 450 mm.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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