Answer Posted / gunnam santosh

we get avg values by multipling formfactor 1.11 for ac
sinusoidal wave form, so that efficiency will be maximum

why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

2194

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What is a parabolic signal?

1155

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Whata are the types of Cables?

2142

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

2018

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what happens to the water pump if ground water level is slowly decreasing?our water pump is varying from no-load full-load due to this problem

1661

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If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

2212

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State angle criterion.

1113

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how to measure earth resistance of a substation

3315

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

2083

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Why does an induction generator is preffered as compared to synchronous generator in especially a wind energy power production project?

2121

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any earth foult trip the relay but in welding time not trip by earth foult

3171

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What is the need for a controller?

1207

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what happens when series resonance occurs?

1842

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send me any model test paper of clerical post of state bank of india.......

1836

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Please explain, how to test vector group of tranformer(Delta y1) . Thank

1691

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