An electric motor is mounted on a steel table. The deflection of the table under the weight motor is observed to be 4 mm. the mass of the motor added to the effective mass of the table is 50 kg. The rotating parts of the motor have a mass of 10 kg and have an eccentricity of 12 mm. During free vibration, it is observed that the displacement of 40 mm is reduced to 2 mm in 1 second. Find the amplitude of motion if the operating speed of the motor is 1750 rpm. Assume the uing is viscous.

An electric motor is mounted on a steel table. The deflection of the table under the weight motor is observed to be 4 mm. the mass of the motor added to the effective mass of the table is 50 kg. The rotating parts of the motor have a mass of 10 kg and have an eccentricity of 12 mm. During free vibration, it is observed that the displacement of 40 mm is reduced to 2 mm in 1 second. Find the amplitude of motion if the operating speed of the motor is 1750 rpm. Assume the uing is viscous.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Forced undamped vibrations

In mechanical engineering, vibration is expressed as the term that occurs due to an object's backward and forward movement about a point of equilibrium. Generally, there are three types of vibrations which are,

Question

HW
An clectric motor is mounted on a steel table. The deflection of the table under the weight of the
motor is observed to be 4 mm. the mass of the motor added to the effective mass of the table is 50
kg. The rotating parts of the motor have a mass of 10 kg and have an eccentricity of 12 mm.
During free vibration, it is observed that the displacement of 40 mm is reduced to 2 mm in 1
second. Find the amplitude of motion if the operating speed of the motor is 1750 rpm. Assume the
damping is viscous.

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