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A thermistor is used for ____________(a) Over voltage protection(b) Temperature alarm circuit(c) Automatic light control(d) Automatic sensorI got this question in semester exam.My enquiry is from Advanced Problems on Filters topic in section Filters and Attenuators of Network Theory

Answer»

Right ANSWER is (b) Temperature ALARM circuit

Easiest explanation: The RESISTANCE of a thermistor DECREASES with increases in temperature. It is used to MONITOR the hot spot temperature of electric machines.



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