what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

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keeping in view of parallel operation which of the 3 phase transformer connection are possible? a)delta-delta to delta-star b) delta-delta to star-delta c) star-star to delta-delta d) delta-star to star-delta

4 Answers   Ecil, Siemens,

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what condition there autotransformer will fail?

2 Answers  

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what is booster? and how it is connected in a circuit?

0 Answers   APTransco,

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how can we change the supply frequency?

8 Answers   Areva,

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what is 3 phase motors

1 Answers   AXA,

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the resistance of wire having length X M is R OHEM if i streched the wire to dubble length what will be the resitance

3 Answers  

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why star point of motor shall not be grounded?

8 Answers  

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Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason

0 Answers  

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how can 3phase motor speed can be controlled without vvf drive?

1 Answers  

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I NEED RRB APTITUDE QUESTIONS AND MODEL PAPER,PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in

0 Answers  

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what is tower earthing and what for it is required

1 Answers  

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