=> △R=( Vo/ Vdc)×(R1/RF)×R =( 5v×200Ω)/(125×10v) =0.8Ω. 10. Assume that the increase and decrease in the resistance of the strain gage element is by the same number of △R. Determine the unbalanced voltage equation.
A. V= – Vdc×(△R/R)
B. V= – Vdc×(△R/R+△R)
C. V= Vdc×(△R/R)
D. V= – Vdc×[(△R+ R)/R]
Answer:A
=> △R=( Vo/ Vdc)×(R1/RF)×R =( 5v×200Ω)/(125×10v) =0.8Ω. 10. Assume that the increase and decrease in the resistance of the strain gage element is by the same number of △R. Determine the unbalanced voltage equation.
A. V= – Vdc×(△R/R) B. V= – Vdc×(△R/R+△R) C. V= Vdc×(△R/R) D. V= – Vdc×[(△R+ R)/R]
Explanation: When the unstrained gage resistance are same, then the output voltage of the strain gage bridge circuit (unbalanced voltage) is given as V= -Vdc×(△R/R). Sanfoundry Global Education & Learning Series – Linear Integrated Circuit.