Why DC excitation is used for alternators? Why cant it be AC?

35 Answers   ABB, Ace Info, Alstom, Shalivahana Power,

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Thumb rule for capacitor bank calculation

1 Answers  

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how to calculate IR value of 33KV cable ??

0 Answers  

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what happens if sf6ckt breaker gas pressure is high or low about the actual rating of gas pressure(5kg/cm2)

2 Answers  

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how does bode plot have an advantage over root locus? how does it determine the stability of a system depending upon the location of poles and zeroes?

2 Answers   NBKR,

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why capacitor bank is not used in generator power

7 Answers   Caterpillar,

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voltage at generation stage is usually- ? a.11kv b.33kv c.66kv d.220kv

12 Answers  

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How can we calculate the rating of capacitor bank to be connected for a particular load(ex.100kw)to improve the power factor from 0.8 to 0.9?

4 Answers   Voltas,

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If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

0 Answers  

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If the generator will not synchronize, what will you do?

3 Answers  

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how calculate the electrical load for industry and office

2 Answers  

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whatdo mean by chopper fed drives.used for ac drives.

0 Answers  

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