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ELECTRICAL MACHINES

Electrical Machines
The emf induced in a conductor rotating in a bipolar field is

 both of above.
 DC.
None of these
 AC.

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

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

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Electrical Machines
Armature of DC machine is made of

 silicon steel.
 conducting material.
 non-ferrous material.
 insulating material.

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Electrical Machines
In an ideal DC generator the regulation is

 low.
 positive.
 zero.
 high.

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Electrical Machines
In a DC generator if field winding attains the critical resistance

 machine will generate maximum voltage.
 the voltage generated will be zero.
 machine will generate maximum power.
 field winding will burn.

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