Electrical Machines
If residual magnetism of a shunt generator is destroyed accidentally it may be restored by connecting its shunt field

 to earth.
 in reverse.
  to a DC source.
 to an AC source.

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

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