how can we change the supply frequency?

8 Answers   Areva,

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Why VCB is required and ACB is also require? what is the BDV of Trafo of 11/33 KV

1 Answers  

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We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 Answers  

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kindly arrange to send me RRB Bangalore previous question paper for JE/Electrical and JE/Signal I am going to write exam on 2010

2 Answers  

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why h parameter are called as hybrid parameter?

0 Answers  

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If induction motor load is incresed motor speed decrases.But in syncronous motor load incrases speed canstant why?

5 Answers  

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what is electric traction?

26 Answers   TCS, Volvo,

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What are various power system instabilities and what are their effects on power system operation?

1 Answers  

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wat is the first thing dat is needed, 2 lay a cable in some area??

0 Answers  

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Why dc Supply used in Control circuit.

12 Answers   HP,

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how can decide the current rating of oltc

0 Answers  

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What are the conditions to be satisfied before connecting two DC generators in parallel?

9 Answers   Bhel, Godrej,

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