) A standard strain gage is used in a quarter bridge circuit to measure the strain of a beam in tension. The strain gage factor is 2.0, and the supply voltage to the Wheatstone bridge is 5.00 V. The bridge is balanced when no load is applied. Assume all resistors are equal when the strain gage circuit is initially balanced with no load. For a certain non- zero load, the measured output voltage is 1.13 mV. From the given information calculate strain produced in the beam.
a) A standard strain gage is used in a quarter bridge circuit to measure the strain of a beam in tension. The strain gage factor is 2.0, and the supply voltage to the Wheatstone bridge is 5.00 V. The bridge is balanced when no load is applied. Assume all resistors are equal when the strain gage circuit is initially balanced with no load. For a certain non-
zero load, the measured output voltage is 1.13 mV. From the given information calculate strain produced in the beam.
b) A two-track incremental encoder installed on a rotating shaft has 1000 slots evenly
distributed along the circumference and incremental encoder produces 2000
pulses/rev. Calculate the count produced by shaft speed of 1800 rpm with a count
interval of 4 mS. Also compare measurement resolution for different number of slots of
the encoder
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