10.111 Scruggs and Iwan (Journal of Structural Engineering, 2003) studied Implementation of a Brushless DC Machine (BDC)...
Question:
10.111 Scruggs and Iwan (Journal of Structural Engineering, 2003) studied Implementation of a Brushless DC Machine (BDC) as a force actuator, for use in suppressing vibrations in civil structures.
The data for semiactive BDC and magnetorheological
(MR) fluid dampers are given in table below. The interstory drifts (xi in cm), and absolute accelerations (ai in m/s2) were recorded.
a At the 5% level of significance, is there a significant difference in the mean distances (di) measured for BDC and MR semiactive dampers? b At the 5% level of significance, is there a significant difference in the mean inventory drifts measured for BDC and MR semiactive dampers? c At the 5% level of significance, is there a significant difference in the mean absolute accelerations measured for BDC and MR semiactive dampers?
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