Explanation: If the Ra=Rb=Rc=RT=R(Equal), then the output voltage across the bridge terminals of the transducer bridge is v=-(△R×Vdc)/ [2×(2×R+△R)]. 6. Which type of thermistor is chosen for temperature measurement and control?
A. High temperature coefficient of resistance
B. Low temperature coefficient of resistance
C. Positive temperature coefficient of resistance
D. None of the mentioned
Answer:A
Explanation: If the Ra=Rb=Rc=RT=R(Equal), then the output voltage across the bridge terminals of the transducer bridge is v=-(△R×Vdc)/ [2×(2×R+△R)]. 6. Which type of thermistor is chosen for temperature measurement and control?
A. High temperature coefficient of resistance B. Low temperature coefficient of resistance C. Positive temperature coefficient of resistance D. None of the mentioned
Explanation: Thermistors with a high temperature coefficient resistance are more sensitive to temperature change and are therefore well suited to temperature measurement and control. 7. Photo conductive cell changes it resistance with