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Electrical Machines

Electrical Machines
At stand still condition the value of slip is

 0
 1
 finite value
 infinite value

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Electrical Machines
In a DC Shunt Motor if the load current increases then field flux

 increases.
 decreases.
 decreases
 remains constant.

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

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

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Electrical Machines
Which of the following motors has low ratings only?

 Capacitor run
 Shaded pole
 Capacitor start
 Resistance split phase

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Electrical Machines
Which of the following is/are the methods to reduce the armature reaction and its effects?

 pole chamfering
All of these
 compensating winding
 pole stacking

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Electrical Machines
In DC generators, electric current to the external circuit from armature is given through

 slip rings.
 commutator.
 none of above.
 solid connection.

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MORE MCQ ON Electrical Machines

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