Answer / azhar ali

When voltage is stepped up its current reduces and loss of voltage due to transmission is reduced and delta is used for transmission to save one wire.

Answer / gunasekaran

basically generator are star connected with neutral earthing
but GT are delta connected because one voltage level one earthing should be permissible it should be at source end if it is more than one earthing third harmonics getting closed path it will destroyed the normal wave form.for transmission transformer is source end so it is earthed.

Answer / gulshan goyal

if any harmonic has been generated then i should not be go
outside for transmission thats whhy we use generation in
delta because in delta harmoics induced enf creates the
circulating current.For transmission we needed 1.higher
voltage which can be achieved 1.732 times by just having
delta to star 2.in star connection we have star point which
can be used for protection by adding earth relay to that point.

why the rating of transformer in k.v.a

4 Answers  

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WHAT IS MEANING OF VECTOR GROUP FOR TRANSFORMER

2 Answers  

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-What is leakage current . how much leakage current is allowed.

3 Answers  

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Is there any reason that a vertical motor can not be mounted horizontally ? I happen to have one and would like to use it horizontally to save money by not buying a new horizontal motor.

1 Answers  

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why the Parameters : Base Voltage & Maximum Voltage can't be equal in value in a VFD (Variable Frequency Drive) ? How much the base voltage would be lower than the maximum voltage ? If 400 V is the 3 phase output of a VFD ... then what should be the base voltage ? thanks a lot

1 Answers   Yaskawa,

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what is ASCR cable and where we use it?

6 Answers   BSL,

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how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

0 Answers   Marriott,

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why earth hole size is biggest in plug point?

22 Answers   Al Qabas, HCL, RRB,

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plz tell me in detail about c.t. and p.t. ?

3 Answers   Reliance, SCL,

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In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?

0 Answers  

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what is different between relay and plc?

3 Answers  

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what is the difference between switch yard to residential area.and how much required it.

0 Answers   GVK,

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