What is the working of Field winding in dc motor, in which part is it work or why ?

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Slipring moter find external resistance

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How Humming noise generated in starter motor which was used the start the engine in a vehicle/car/Truck?.Moreover Starter motor was operated in DC power supply. Can you guys clarify ?

2 Answers  

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what is meaning of phase angle in two phase.

5 Answers  

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What about Reactive power.and role of that one?

7 Answers  

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IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

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10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

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what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?

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I had attend the ITC (Indian Tobacco Company) interview (For Electrical maintanance).There they was conducted me a written test.And I was passed in that.Now They are going to conduct a Practical Interview in next round.Please help me what practical test they will ask............?

0 Answers   ITC Infotech,

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Why the motor was take the starting current is high?

3 Answers  

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what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

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why generation of electricity in low value voltage

3 Answers  

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