Figure Q3(c) shows two strain gauges where one gauge is active, and the second gauge is...

 

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Figure Q3(c) shows two strain gauges where one gauge is active, and the second gauge is dummy. Explain with the help of a diagram the working principle of a Wheatstone bridge circuit with strain gauge to measure force or pressure. If the two other resistors used in the Wheatstone bridge and the dummy gauge RD are fixed to 120 2, meanwhile the active strain gauge RA with a gauge factor, GF= 2 is subjected to a strain of 1.4 x 10. Determine the bridge offset voltage if the DC source voltage of the Wheatstone bridge is 10 V. RD RA Figure Q3(c) shows two strain gauges where one gauge is active, and the second gauge is dummy. Explain with the help of a diagram the working principle of a Wheatstone bridge circuit with strain gauge to measure force or pressure. If the two other resistors used in the Wheatstone bridge and the dummy gauge RD are fixed to 120 2, meanwhile the active strain gauge RA with a gauge factor, GF= 2 is subjected to a strain of 1.4 x 10. Determine the bridge offset voltage if the DC source voltage of the Wheatstone bridge is 10 V. RD RA