What is difference between potentiometer and rheostat?
Latest Answer : The difference between potentiometer and rheostat is that the potentiometer can be used for high range of voltage and current but the rheostat cannot be used for high range of voltage or current. Size of the potentiometer is large, rheostat is less.byS.V.Vijayaraj ...
If the position of rheostat is changed from minimum position to maximum position in D.C shunt motors speed is increased, how?
Latest Answer : In D.C shunt machine by inserting the rheostat in the field we can increase the speed above the base speed in the ratio 3:1 but above that machine get overheated. When we increase the resistance field current get reduced due to that flux get reduced cause ...