Question

A strain gauge has a normal resistance of 360Ω and a gauge factor of 2.01. It is used in a quarter bridge with the other fixed resistors being 360s2 and with a supply voltage of 3.0V. The bridge is initially balanced and then the gauge is heated to 300°C without any stress applied. What will be the bridges linearised output Volin mV) if at 300°C, the apparent strain is 75strain and the S variation is +1.025%? (Answer must match to 3 decimal places).

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