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Electrical Machines
A DC compound motor has
only shunt field winding.
both shunt and series field winding.
only series field winding.
tertiary winding.
only shunt field winding.
both shunt and series field winding.
only series field winding.
tertiary winding.
Answer
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Related Question
Electrical Machines
Field winding of a DC series motor is usually provided with thick wire
as it carries large load current.
in order to reduce eddy current to provide large flux.
to provide large flux.
to reduce the insulation of materials.
as it carries large load current.
in order to reduce eddy current to provide large flux.
to provide large flux.
to reduce the insulation of materials.
Answer
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Electrical Machines
Equalizer rings are used in which of the followings?
wave winding
both 1 and 2
lap winding
None of these
wave winding
both 1 and 2
lap winding
None of these
Answer
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Electrical Machines
If the excitation is reduced, the power factor is
leading power factor
None of these
lagging power factor
unity power factor
leading power factor
None of these
lagging power factor
unity power factor
Answer
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Electrical Machines
Speed of DC motor can be controlled by varying
applied voltage.
resistance of armature culture.
its flux oer pole.
all of these.
applied voltage.
resistance of armature culture.
its flux oer pole.
all of these.
Answer
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Electrical Machines
For high current and low current rating which winding is employed to DC machine?
Both lap and wave winding
Wave winding
Lap winding
None of above
Both lap and wave winding
Wave winding
Lap winding
None of above
Answer
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