why dc supply is given for excitation of ac alternator?how dc can produce flux?

5 Answers  

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what are the advantages of having high voltage in transmission lines?

5 Answers  

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Is your generator is automated or manual if so do you know the circuits?

7 Answers   RRB,

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how does the switching of capacitors in a capacitor bank take place when we use them at the load side to reduce the power factor?

2 Answers  

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what is the difference between squirrel cage & slip ring induction motor by construction & working principle ?

1 Answers   Sail,

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what s d difference between inverter an ups

1 Answers   Jindal,

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5MVA TRANSFORMER SUDDENLY FAIL WITH THE PRV TRIPPING AND LARGE AMOUNT OF OIL SPREAD OUT? SO IT CAME BACK WITH THE REPAIRING WITH REASON THAT IT FAILS BCOZ OF TRANSIENT EFFECT? SO PLZ EXPLAIN HOW DOES IT HAPPENED?

1 Answers  

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The power factor of the fixed load is 0.8, now the p.f is varying from 0.8 to 0.5.

0 Answers  

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What is Star Delta Connection, where it is applied & what for it is used

4 Answers   Premium Transmission,

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How to know the Max. current caring capacity of the cable by its size ?

0 Answers   SFPL,

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What is Fire Panel ? How it works ?

0 Answers  

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different aspects of voltage stability

0 Answers  

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