There are two practical ways by which commutation may be improved. These methods are, 1. Resistance commutation and 2. E.M.F.…
Speed Control of D.C. Shunt Motor (Part1) 1. Flux Control As indicated by the speed equation, the speed is inversely…
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…
i) Torque - Armature current characteristics For a d.c. motor T α Φ Ia For a constant values…
As stated earlier, whether a machine is d.c. generator or a motor the construction basically remains the same as shown…
When the field winding is connected in series with the armature winding while supplying the load then the generator is…
For the motoring action, there must exist two fluxes which interact with each other to produce the torque. In d.c.…