(b) 1. A platinum resistance sensor has a resistance of 100 £2 at 0 °C and a temperature coefficient of resistance (oc) of 4 x 10 "C. If the resistance of the sensor is 125 0, find the corresponding temperature of the sensor.
(b) 1. A platinum resistance sensor has a resistance of 100 £2 at 0 °C and a temperature coefficient of resistance (oc) of 4 x 10 "C. If the resistance of the sensor is 125 0, find the corresponding temperature of the sensor.
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Transcribed Image Text:(b) 1. A platinum resistance sensor has a resistance of 100 2 at 0 °C and a temperature
coefficient of resistance (oc) of 4 x 10 "C. If the resistance of the sensor is 125
O, find the corresponding temperature of the sensor.
ii. A variable dielectric capacitive displacement sensor consists of two square metal
plates of side 5 cm, separated by a gap of 1 mm. A sheet of dielectric material 1
mm thick and of the same area as the plates can be slide between them as shown
in Figure Q.4b. Given that the dielectric constant of air is 1 and that of the dielectric
material is 4, calculate the capacitance of the sensor when the input displacement
x-0.0 cm, 2.5 cm and 5,0 cm.
Figure Q4b
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