0 votes 0 votes A strain gauge forms one arm of the bridge shown in the figure below and has a nominal resistance without any load as $R_s = 300$ . Other bridge resistances are $R_1 = R_2 = R_3 = 300$ . The maximum permissible current through the strain gauge is $20\:mA$. During certain measurement when the bridge is excited by maximum permissible voltage and the strain gauge resistance is increased by $1\%$ over the nominal value, the output voltage $V_0$ in $mV$ is $56.02$ $40.83$ $29.85$ $10.02$ Electric Circuits gate2013-ee bridge-circuit variable-resistor + – piyag476 asked Feb 11, 2017 edited Nov 20, 2019 by Lakshman Bhaiya piyag476 1.5k points answer comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Voltage, Vin = (300+300)*20m = 12v Now, V 0 = 6-((300/603)*12) = 0.03v. I.e., 30mV Aslamshaik answered Aug 27, 2018 Aslamshaik 140 points comment Share ask related question See all 0 reply Please log in or register to add a comment.