Answer Posted / amit kumar

25 kv ac

For a stable system, where should the poles of a system be in a root loci plot?

1178

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What is the formula to calculate the size of Aluminium and copper cable?

1901

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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

1849

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What is the difference between a Root Locus plot and a Bode plot?

1217

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how to calculate vfd o/p voltage by frequency

2112

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RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV is ok ,but haw to calculate the KA rating?

2026

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If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2149

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The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

3603

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before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water

1611

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how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)

2296

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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1902

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how to identify the cable quality and what is flame proof cable

2067

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what is deffrence between squirral cage and wound rotor in IM?

1914

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I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- maitheerainbow@gmail.com

1894

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i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

1965

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