Answer / choudhri awais arain

vector group is important to use in case of parallelling of transformer.both transformer should have same vector group.
thn unbalancing of the voltages occure.

Answer / jayaram

electric curent have a some phase angle(phase to phase) so
used a vector form. it is used at which power have a
freqency

single phase voltage 230 and Three phase voltage 450 why 690 voltage

1 Answers   XYZ,

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Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

0 Answers  

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Will transformer heating be approximately the same for resistive, inductive or capacitive loads of the same VA rating? Explain.

1 Answers  

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L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.

0 Answers  

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What is the difference between INVERTER and UPS?

7 Answers  

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Define corner frequency?

0 Answers  

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Waht is Inductor?

2 Answers  

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Why don't connect earth wire to elcb?if earth fault occur,how will detect it

1 Answers   TATA, Tata Communications, Telecommunications,

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Why dnt we generate 5-ph or 7-ph supply like as 3-ph supply

2 Answers  

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What is the lower limit of break-down voltage of converter transformer.

0 Answers   Tata Steel Limited,

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How the PF control while running DG set with load

0 Answers  

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what is the difference b/w permitivity and permeability

1 Answers  

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