Q1.What is the principle of the DC Motor ? A. If the current carrying conductor is placed in the maganetic…
According to the speed equation of a d.c. motor we can write, The factors Z, P, A are constants for…
Speed Control of D.C. Series Motor (Part2) 2. Rheostatic Control In this method, a variable resistance (Rx) is inserted in…
Speed Control of D.C. Series Motor (Part1) The flux produced by the winding depends on the m.m.f. i.e. magnetomotive force…
Speed Control of D.C. Shunt Motor (Part1) 1. Flux Control As indicated by the speed equation, the speed is inversely…
It is seen earlier that motor armature current is decided by the load. On light load or no load, the…
Instead of just stating the applications, the behaviour of the various characteristics like speed, starting torque etc., which makes the…
Speed Control of D.C. Shunt Motor (Part2) 2. Armature Voltage Control Method or Rheostatic Control The speed is directly proportional…
Speed Control of D.C. Shunt Motor (Part3) 3. Applied Voltage Control Multiple voltage control : In this technique the shunt field…
Compound motor characteristics basically depends on the fact whether the motor is cumulatively compound or differential compound. All the characteristics…