Electrical Machines
The flux is maximum in the following part of a DC motor:

 under trailing pole tip.
 pole core.
 under leading pole tip.
 under the interpole.

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Electrical Machines
A dc shunt generator, when commissioned after a major repair of the field system, failed to build Up voltage. It was because

 field resistance was higher than critical resistance
 field system lost residual magnetism
 there was a break in the armature circuit
 field winding was wrongly connected

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Electrical Machines
In a step down transformer which one of the following statements is true?

 Secondary current is less than primary current.
  Number of secondary turns is less than primary turns.
 Secondary power is less than primary power.
 Number of secondary turns is more than that of primary.

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