Answered: er of Figure 8.20 and Section 9.1.2 has…

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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Question

The unbonded strain gauge accelerometer of Figure 8.20 and Section 9.1.2 has a natural fre- quency of 175 Hz and an input range of 0 to 5g. Given that the strain due to prestressing is twice the maximum acceleration-induced strain, use the strain gauge data given below to calculate the range of the bridge output voltage. Resistance = 120 2 = 2.1 Gauge factor Maximum current Length at zero acceleration = 2.3 cm = 50 mA Figure 8.20: the Unbonded strain gauge accelerometer. eo -e eo te m 4 3 eo eo +e x = 0 2.

9.7
The unbonded strain gauge accelerometer of Figure 8.20 and Section 9.1.2 has a natural fre-
quency of 175 Hz and an input range of 0 to 5g. Given that the strain due to prestressing
is twice the maximum acceleration-induced strain, use the strain gauge data given below to
calculate the range of the bridge output voltage.
Resistance
= 120 2
= 2.1
Gauge factor
Maximum current
Length at zero acceleration = 2.3 cm
= 50 mA
Figure 8.20: the Unbonded strain
gauge accelerometer.
eo -e
eo te
m
4
3
eo
eo +e
x = 0
2.

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