The full form of RTD is _________________(a) resistive thermal detector(b) resistance temperature detector(c) resistance temperature device(d) reluctance thermal deviceI had been asked this question at a job interview.The above asked question is from Essential Parameters for Telemedicine topic in division Telemedicine Technology of Biomedical Instrumentation

The full form of RTD is _________________(a) resistive thermal detecto

1.	The full form of RTD is _________________(a) resistive thermal detector(b) resistance temperature detector(c) resistance temperature device(d) reluctance thermal deviceI had been asked this question at a job interview.The above asked question is from Essential Parameters for Telemedicine topic in division Telemedicine Technology of Biomedical Instrumentation
Answer» Right answer is (b) resistance temperature detector For explanation I would SAY: It is a passive SENSOR and requires CURRENT excitation to produce an OUTPUT voltage. RTD has very low temperature coefficient.RTD stands for Resistance Temperature Device. Voltage drop across RTD is much LARGER than the thermocouple output voltage.

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