(B)- Indicate whether the following statemenits are true or false and correct the false statements | 1-By field Diverter method, the speed of d.c series motor can be controlled a above rated vale E 2-if the supply frequency in a transformer is doubled, eddy current loss also doubled 3- A d.c series motor should not be started with load 4- Compensating winding in de generator carries field current SA single -phase transformer has its maximum efficiency at 60% of full load. At full load cop loss will be equal to core loss

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Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors.  The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.