3. Compare the resistance change produced by a strain of 150 microstrain if a strain gauge of nominalresistance of 120 N is used (i) when made of wire resistance having a gauge factor of 2.13 and (ii)when made of a semiconducting material having a gauge factor of 151.4. A metallic strain gauge has a resistance of 120 Q and a gauge factor of 2. It is installed on analuminium structure which has a yield point stress of 0.2 GN/m² and young's modulus of 68.7GN/m?, determine the change in resistance of the gauge that would be caused by loading thematerial to yield point.

Given: R= 120 ohm gauge factor =2 yield stress=0.2 GN/m2 Young modulus= 68.7 GN/m2 To determine:…

Answered: determine the change in resistance of…

Engineering

Mechanical Engineering

determine the change in resistance of the gauge

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

3. Compare the resistance change produced by a strain of 150 microstrain if a strain gauge of nominal
resistance of 120 N is used (i) when made of wire resistance having a gauge factor of 2.13 and (ii)
when made of a semiconducting material having a gauge factor of 151.
4. A metallic strain gauge has a resistance of 120 Q and a gauge factor of 2. It is installed on an
aluminium structure which has a yield point stress of 0.2 GN/m² and young's modulus of 68.7
GN/m?, determine the change in resistance of the gauge that would be caused by loading the
material to yield point.

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