Answer / sital

The single-phase feed makes it possible to use a single overhead line. More overhead lines increase the costs, and restrict the maximum speed of train.
Three phase inverters and related variable frequency drives, may, under certain circumstances, produce large amounts of harmonic distortion in their output, and the efficiency of the inverter-motor combination can be poor.

What will happen if power transformer designed for 50 Hz is connected to 500 Hz of the same voltage , and vice versa ?

1 Answers  

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Befor synchronissation of Generator what test to be carried out.pl.specify with reason.

3 Answers   Kanoria,

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At what voltage domestic tubelight works?

2 Answers   Cigfil, L&T, MNC,

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can we charge 3 ph power transformer delta-star wound with neutral grounded 6.6kV/415V from secondary side(415V) but with primary(6.6kV) open by dg,what are the disadvantages or losses.

1 Answers  

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how to amps calculate from 1KVA?

11 Answers  

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DG use Rating KVA why

1 Answers  

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when we r using 3.5 cable for a bldg. and put laod on each phase using the neutral and neutral is the return paht for the phase so the current of the neutral must be Ir+Ib+iY (return).But the size of the netural is .5 as comper to the phase.

2 Answers  

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what is a types of short circuit and what is a types of distance protection tests

0 Answers   Anna University,

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What is meant by "tampering detection" of a electrical energy meter?

3 Answers  

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I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

0 Answers  

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Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend

0 Answers  

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what is meaning volt-hz ration,where is necessry tomaintain and why. specialy during increase the power of generator.

3 Answers  

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