Electrical Machines
In dc machines, the field system has to be provided on stator unlike synchronous machines Where in it could be on any member, because

 it gives more uniform air-gap flux distribution
 it reduces field structure iron losses
 commutator action is not possible otherwise
 dc machines are comparatively low rating machines.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which is the arrangement of windings in a core type single phase transformer?

 Half lv inside and half hv outside on each core limb
 Half hv inside and half lv outside on each core limb
 Lv on one core limb and hv on the other
 Sandwiched lv and hv discs on each core limb

ANSWER DOWNLOAD EXAMIANS APP