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A strain gauge is used to measure the tension force in a 2-cm diameter bar of steel with Young modulus of 2.07 x 107 N/cm2 (30 x 106 lb./in.2). The strain gauge has a nominal resistance of 160 Ω and a GF of 5. The gauge is connected to a bridge supplied with a 10 Vdc. The bridge was initially balanced. After the bar is put under tension, the bridge output voltage is 0.0008 Vdc. Draw the schematic of the bridge (setup). Calculate the force on the bar.

A strain gauge is used to measure the tension force in a 2-cm diameter bar of steel with Young modulus of 2.07 x 107 N/cm2 (30 x 106 lb./in.2). The strain gauge has a nominal resistance of 160 Ω and a GF of 5. The gauge is connected to a bridge supplied with a 10 Vdc. The bridge was initially balanced. After the bar is put under tension, the bridge output voltage is 0.0008 Vdc. Draw the schematic of the bridge (setup). Calculate the force on the bar.

Elements Of Electromagnetics
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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A strain gauge is used to measure the tension force in a 2-cm diameter bar of steel with Young modulus of 2.07 x 107 N/cm2 (30 x 106 lb./in.2). The strain gauge has a nominal resistance of 160 Ω and a GF of 5. The gauge is connected to a bridge supplied with a 10 Vdc. The bridge was initially balanced. After the bar is put under tension, the bridge output voltage is 0.0008 Vdc.

Draw the schematic of the bridge (setup).

Calculate the force on the bar.

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