Hermiston of temperature coefficient low and +ve or high and -ve?
Answers
Answered by
2
The temperature coefficient of resistance for a Hermiston is a. Low and negative b. Low and positive c. High and negative d. High and positive. Asked in IES Electronics Paper-1, 1997 ... After primary infection of flowers by ascospores, conidia are produced in large numbers and mix with plant sap exuded ..... Although air temperature parameters often resulted in lower correlation coefficients than their ...
Answered by
0
Answer:
The negative sign of the coefficient α indicates that the thermistor resistance decreases with increasing temperature.
Metals and alloys, in general, raise their resistance as temperature rises. Their temperature coefficients of resistance, for example, are 0.4%/℃ (gold), 0.39%/℃ (platinum), and iron and nickel are relatively larger with 0.66%/℃ and 0.67%/℃, respectively. Thermistors, as compared with these metals, vary their resistance significantly with a small temperature change. Therefore, thermistors are suitable for precise temperature measurements and controlling the temperature by using slight differences in temperature.
Similar questions