Embedded Files
A resistive position transducer with a shaft stroke of 3 in is applied to the circuit 7.1 (b). The total resistance of the potentiometer is 5 kΩ. The applied voltage Vt is 5V. When the wiper is 0.9 in from B, what is the value of output voltage?
Solution : Vo = 1.5V
2. A resistive transducer with a resistance of 5 kΩ is used in the arrangement in Figure 7.2. Potentiometer R3-R4 is also 5 kΩ and Vt is 5V. The initial position to be used as a reference point is such that R1=R2 (i.e. the shaft is at the center). At the beginning, R3 and R4 are adjusted so that the bridge is balanced (Ve = 0). Assuming that the object being monitored moves a maximum resistance of 0.5 in towards A, what will be the new value of Ve? (Shaft distance is 5 in).
Solution : If the wiper moves 0.5 in towards A from the center, it will have moved 3 in from B
3. Given a resistance strain gauge with GF = 2.0. Strain is 1 x 10-6 and R = 120W. Calculate the changes in R.
Solution : 240x 10^6 Ω
4. Find the output voltage for type J thermocouple at 1500C with a reference temperature of 300C.
Solution : VJ30 (1500C) = 6.46 mA.
Page updated
Google Sites
Report abuse