Electrical Machines
Width of a carbon brush should be equal to

 less than the width of commutator segment.
 the width of the 1 to 2 commutator segment.
 the width of the 2 to 3 commutator segment.
 the width more than 3 commutator segment.

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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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