Answer / s,jude finney

amount of copper used for conduction is less in 3phase for
the same amount of power in single phase

Answer / phanendra babu

there are so many reasons
1.generation is 3ph. so convertion is difficult
2.losses will be more in single phase system
3.equipment cost will be increased
4.copper cost increased for example for 3ph sys 3wires are
enough to transmit but for 3 single phases 6 wires are req.

Answer / gunasekaran

power regulation is good for 3phase system.

Answer / guest

The power generation in india is 11kV 3phase,50Hz & vch is
economical (as per standard)
After genration v have different voltage levels for
consumers(Transmission to Distribution).
in distribution the voltage is steepped down to 440v
because different loads r there for domestic and industrial
needs.
so v can take tappings for any phase for consumers..

can any one suggest websites having study maetrials for the electrical students?

1 Answers  

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What is main difference between earthing and neutral grounding?

3 Answers   Jindal,

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How can we measure the frequency of a rotor running in full load condition? Explain the method of measuring.

2 Answers   Wipro,

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

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why we create vaccume in transformer tank before oil filteration?

3 Answers   CG CoreEL,

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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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A 11000/415V distribution transformer is fed 415V upon it's LT side,Do I get 11000V upon it's Primary side ?

7 Answers  

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why AC signals are represented by sinusoidal waveform?WHY other waveforms not used for representation

0 Answers  

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What is the kva?

2 Answers   Makino Auto, SAL Steel Power, Sapphire Group,

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Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

0 Answers  

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if there is a voltage difference between neutral and earth when we operate any instrument for fraction of time then where is problem?

1 Answers  

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What do you mean by reverse current braking of an induction motor?

1 Answers  

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