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...
Winch is a device for hauling or lifting; made up of a rope, cable or chain wound around a horizontal rotating drum and turned by a crank or motor and typically mounted at the rear of a towing vehicle. Winches hav...
The rotating speed of ac induction motors is determined by the frequency of ac applied to the stator, not the applied voltage. However, stator voltage must also drop to prevent excessive current flow through the stator a...
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