1. Three impedances of 5-j10, 6 + j 5 and 3 + j15 ohms are connected in wye from a line- to-line voltage of 3300 V, 3-phase, 3-wire supply. The phase sequence is ABC. Calculate the phase voltages for each impedances. Using the IEC definition on voltage unbalance, determine the voltage unbalance factor. 5-j10 6+j5 3+j15 B

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RTD (Resistance Temperature Detector)

A resistance temperature detector is a passive electronic device or a sensor. The name itself suggests that it is related to resistance, temperature, and detection. Similarly, its resistance changes when there is a temperature change; the resistance increases when the temperature of the RTD device increases or vice-versa. It is also known as a resistance thermometer. Its working is similar to the thermocouple.