Measurement, Conversion and Control

Q1: The resistive change of a strain gauge

A is based on the weight placed upon it, but can be many thousands of ohms

B is usually no more than 100 omega.gif

C is based on the gauge factor, but is typically less than an ohm

D has a positive temperature coefficient

ANS:C - is based on the gauge factor, but is typically less than an ohm

Gauge factor (GF) or strain factor of a strain gauge is the ratio of relative change in electrical resistance R, to the mechanical strain.



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