Induction Motor Speed of Stator magnetic field = Ns Speed of rotor = Nr Slip, S = (Ns-Nr) / Nr As the stator magnetic field rotates at Ns and the rotor rotates at Nr in the same direction the relative speed of magnetic field with respect to conductor is Ns-Nr In case of Induction motor […]


Conducting Material Electrical Carbon Properties This material is made from graphite and other form of carbon. Conductivity of Carbon is less than Copper (Cu) and Aluminum (Al) but its surface is smoother so it is used to make brushes in a Electrical Machine. Carbon brushes are graphited or heat treated to increase conductivity and reduce […]