Electrical Machines
With the increases in field excitation of a DC generator, its generated emf

  increases upto a limit and then remains almost constant.
  decreases.
 increases.
  remains constant.

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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
 Sandwiched lv and hv discs on each core limb
 Half lv inside and half hv outside on each core limb
 Half hv inside and half lv outside on each core limb

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Electrical Machines
In a DC machine the armature mmf is

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

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