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Electrical Machines
A synchorous generator connected to an infinite bus is over excited. Considering only the reactive power from the point view of the system the machine acts as
None of these.
an inductor.
A resistor.
A capacitor.
None of these.
an inductor.
A resistor.
A capacitor.
Answer
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Related Question
Electrical Machines
What will be the eddy current loss if the supply frequency of a transformer becomes double?
Doubled.
Remains same.
Eight times.
Four times.
Doubled.
Remains same.
Eight times.
Four times.
Answer
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Electrical Machines
In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will
increase
None of these
either increase or decrease
decrease
increase
None of these
either increase or decrease
decrease
Answer
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Electrical Machines
The working principle of transformer depends on
Amperes law.
Newtons law.
Coulombs law.
Faradays law of electromagnetic induction.
Amperes law.
Newtons law.
Coulombs law.
Faradays law of electromagnetic induction.
Answer
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Electrical Machines
The output power of any electrical motor is taken from the
Field.
Armature.
Coupling mounted on the shaft.
Motor frame.
Field.
Armature.
Coupling mounted on the shaft.
Motor frame.
Answer
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Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.
43 Amp.
29 Amp.
44.47 Amp.
33.33 Amp.
43 Amp.
29 Amp.
44.47 Amp.
33.33 Amp.
Answer
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