A DC motor is not the same as a "gear motor" - a "gear motor" may be an AC or DC motor coupled with a gearbox or transmission. A gear motor adds mechanical gears to alter the speed/torque of the motor for an application....
Armature reaction is effect of armature flux on main field flux. Basically there are two windings in a dc motor - Armature winding (on rotor) and field winding (on stator). When we excite the field winding, it pro...
In a DC machine, two kinds of magnetic fluxes are present; 'armature flux' and 'main field flux'. The effect of armature flux on the main field flux is called as armature reaction. MNA And GNA EMF is induced in th...
As we known, permanent magnet motors have seen a significant rise in adoption over the years due to their higher efficiency and throughput, and this trend is expected to continue over the coming years, owing to product d...
A servo motor may be a DC motor usually having separate excitation for field and armature combined with a position feedback system. These motors can be used as position control devices in a closed loop control. The feedb...
Advantages of DC motors: Speed control over a wide range both above and below the rated speed: The attractive feature of the dc motor is that it offers the wide range of speed control both above and below the rate...
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