An electric pole of circular cross section, with a bending stiffness &-5500 Nm and a damping ratio -0.1, carries a transformer of mass m-280 kg- It is subjected to an earthquake that is characterized by a response spectrum given in Figure 1: Determine a) maximum relative displacement of the transformer, b) maximum shear force in the pole, and

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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An electric pole of circular cross section, with a bending stiffness &-5500 N/m and a
damping ratio -0.1, carries a transformer of mass m - 280 kg. It is subjected to an
earthquake that is characterized by a response spectrum given in Figure 1:
Determine
Spectral velocity (in./s)
a) maximum relative displacement of the transformer,
b) maximum shear force in the pole, and
100
80
ration
04 06.08.1
AA
Natural time period (sec)
Figure 1: Response spectrum of a typical earthquake
MD
Transcribed Image Text:An electric pole of circular cross section, with a bending stiffness &-5500 N/m and a damping ratio -0.1, carries a transformer of mass m - 280 kg. It is subjected to an earthquake that is characterized by a response spectrum given in Figure 1: Determine Spectral velocity (in./s) a) maximum relative displacement of the transformer, b) maximum shear force in the pole, and 100 80 ration 04 06.08.1 AA Natural time period (sec) Figure 1: Response spectrum of a typical earthquake MD
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