An electric motor delivers 4 kW power at 1725 Rpm its rotating speed. The motor is mounted on 4 springs with Stiffness constant of k= 15 kN/m for every spring. The motor has a mass of 220 kg, and with radius of gyration of its mass center G is 115 mm. In operational, there will be an equilibrium that the springs deflections are accommodating the electric motor torque. Determine : (a) The Natural Frequency of this electric motor for its oscillation vibration motion in up and down directions (fny, as well as (fn)s in rotational directions about its mass center G, when the motor is still turned OFF.

An electric motor delivers 4 kW power at 1725 Rpm its rotating speed. The motor is mounted on 4 springs with Stiffness constant of k= 15 kN/m for every spring. The motor has a mass of 220 kg, and with radius of gyration of its mass center G is 115 mm. In operational, there will be an equilibrium that the springs deflections are accommodating the electric motor torque. Determine : (a) The Natural Frequency of this electric motor for its oscillation vibration motion in up and down directions (fny, as well as (fn)s in rotational directions about its mass center G, when the motor is still turned OFF.

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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