Answer Posted / mukesh

if field winding is mounted on the stator then 4 slip rings
are required,hence bulkness and cost will increased and due
to large current flow more insulators are required(for
avoid heating) as well as rotor inertia is also
effected...while if we placed field winding on rotor then
only 2 slip rings are required hence the problems due to
opposite winding can be avoided.

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