The Yoke in a DC machine

The function of a Yoke in a DC machine is twofold.  The yoke acts as path for the magnetic flux.  It also provides mechanical support and shape to the dc machine.

As it is a path for the magnetic flux, the yoke should be made only of a magnetic material. 

The Yoke is usually made of cast iron, forged steel or cast steel.  In certain large machines, the yoke is made of two pieces which are bolted together.

Popular Posts