The main benefit(s) of using a two or four strain gage system is/are: The circui

Question

The main benefit(s) of using a two or four strain gage system is/are: The circuit keeps good "specificity." The gage resistance becomes temperature dependent. Vout is increased. The gage factor decreases. Answers a and c. Answers b and d. What is the phase relationship between the output and input voltages of a follower circuit? The input and output signals are 180 degree out of phase with each other. The input signal is an AC voltage and the output signal is a DC voltage. The input and output signals are in phase with each other. The input and output signals are 45 degree out of phase with each other. The common mode voltage of a differential amplifier is: The ratio of the differential gain over the common mode gain. The difference between the two inputs, multiplied by some gain factor. The amplification of 60 Hz noise. The average of the two inputs. In ideal situations, the common mode rejection ratio should be: Infinite. Zero V=1 8,675,309 The gage factor, G is the measure of the_of a strain gage. Capacitance Sensitivity Cross-sectional area Strain Answers d and e

Explanation / Answer

i)
when we are connecting two or four strain gauge in the system the gauge factor will increase and the output will increase because it gives a good sensitivity and the any change in input will directly reflect in the output so it is producing a good specificity

ANS:-e
ii)
a follower circuit is a type of circuit whose output follow the input given to the circuit so that the phase of output will be in phase to the input.

ANS:-c
iii)
the common mode voltage to the differential amplifier is the average of the input given to the circuit .in the common mode the same input is applied to both the input so that the input will be averaged between the two input.

ANS:-d
iv)
the common mode rejection ratio is the ratio of differential mode to common mode in the amplifier
                                    CMRR=(Ad/Acm)

in a diffrential amplifier the value of Acm must be zero so that the CMRR will be infinity.

ANS:-a

v)

the gauge factor is the measure of sensitivity of the strain gauge because

                                                  Gf=(R/R)

so that from above eq. gause is the measure of change of resistance so that it shows the sensitivity.

ANS:-b

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