Answer / gowtham g

vector group of transformer-Three phase transformer consists of three sets of primary windings, one for each phase, and three sets of secondary windings wound on the same iron core.load hormonics-Harmonic voltages and currents in an electric power system are a result of non-linear electric loads. Harmonic frequencies in the power grid are a frequent cause of power quality problems. Harmonics in power systems result in increased heating in the equipment and conductors, misfiring in variable speed drives, and torque pulsations in motors. Reduction of harmonics is considered desirable.

if single phase is 230 v three phase is 440 v then what about two phase?and why is it so?

2 Answers   Eicher,

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we convert 66kv to 33kv then 33kv to 11kv,11kv to 440v.why not we convert directly from 66kv to440v?

7 Answers   HCL, L&T,

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how to increase or decrease speed in DC shunt motor by DC convertor

0 Answers  

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what is the difference between ac and electric

1 Answers  

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What is the electrical difference between Earthing Switch (ES) and Maintenance Earthing Switch (MES)?

1 Answers  

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WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB

0 Answers  

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what types of fault occurred in transmission line ? which protection function senses the fault?

1 Answers  

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Why effective AC resistance is more than DC resistance of a transmission line?

9 Answers   HCL, ONGC,

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Why earthing is necessary for any equipment?

0 Answers  

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why voltage form factor of PT are increase , when it is ecpected heigher spikes in system. how it is calculated.

0 Answers   HAL,

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what is the main purpose of line PT and bus PT?

11 Answers   L&T,

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Why did call copper as a electrical conductor?

2 Answers   ABB,

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