Answer / subrata

1.due to frequency

Answer / shashidhara tm

AC machines require magnetic flux change at designed frequency... In case of India, 50Hz. For example, if no changing flux is given to an induction motor, it won't produce a rotating magnetic flux resultant on the rotor and it won't rotate the rotor. If no alternating voltage is given to a fluorescent lamp, it won't produce high voltage breakdown in the inert gas and emit UV.
But I'm not sure whether a DC motor works or not on AC voltage...

whether a separate starter is used for a motor while it is connected to a vvvf panel?

2 Answers  

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If two transformers same rating(11KV / 440V)connected in the same primary line(11KV), can we connect(bus coupler) secondary side directly or need a synchronization????

3 Answers  

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what is the type of starter used in tube light?

2 Answers  

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what is draiv work

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1.wat is the advantage of induction motor? 2.wat is diffrence between 1-phase and 3-phase induction motor?

2 Answers  

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why generator is design for lagging P.F(power factor)?

3 Answers   BSES,

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What is a commutator?

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if there is nutral in phase why we use earthing wire and grounding? even at fault condition the fault current flows to neutral (it is a lower path)

0 Answers  

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slor cell made?

1 Answers  

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watt meter have 4 terminals what there name??? and what theses 4 terminals indicates ?? and why 2 terminals are short circuited??

1 Answers  

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why odd hormonics only will effect the power system.why not even hormonics

1 Answers  

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Why have the transformer one earthing to their neutral? Why have the transformer many earthing to their body?

1 Answers  

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