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Electrical Machines
A triangular mmf wave is produced in the air gap of an electric machine. Such wave is produced by
stator of a dc machine.
rotor of a dc machine.
stator of a induction machine.
rotor of an synchronous machine.
stator of a dc machine.
rotor of a dc machine.
stator of a induction machine.
rotor of an synchronous machine.
Answer
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Related Question
Electrical Machines
The size of inter poles is small as compared to main poles. What is the reason?
All of these
In order to not to get saturated.
In order to get more flux.
In order to get saturated.
All of these
In order to not to get saturated.
In order to get more flux.
In order to get saturated.
Answer
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Electrical Machines
The effect of ------------------ on main field flux is armature reaction?
armature mmf
All of these
armature current
armature flux
armature mmf
All of these
armature current
armature flux
Answer
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Electrical Machines
Where the shunt generators are widely used?
Where voltage variation is needed over a wide load range.
Where the load is very high.
Where a constant voltage is required over a narrow load range.
Where often load fluctuation is occurred.
Where voltage variation is needed over a wide load range.
Where the load is very high.
Where a constant voltage is required over a narrow load range.
Where often load fluctuation is occurred.
Answer
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Electrical Machines
Commonly used starters of cage motor is
DOL.
None of these
star delta.
both A and B.
DOL.
None of these
star delta.
both A and B.
Answer
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Electrical Machines
Open circuit in a transformer is prefered with
high frequency supply
direct current
rated transformer voltage
rated transformer current
high frequency supply
direct current
rated transformer voltage
rated transformer current
Answer
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