Electrical Machines
DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by

 commutator
 starters
 armature winding
 field winding

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

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

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Electrical Machines
In a DC machine the armature mmf is

 rotating with respect to field poles.
  rotating with respect to field poles as well as armature.
  stationary with respect to armature.
  stationary with respect to field poles.

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