Answer / kj

This is done by taking a wire from each end of each winding
to the starter. When starting one end of each winding is
connected to a separate phase and the other ends are
connected together to form a star point.
When changing to delat the ends with the starpoint are
switched open and then switched to a phase each.
Having the correct phases on each end of the windings is
important otherwise the direction of rotation can be
reversed when changing to from star to delta.

What is dc induction motor ? and how to control its speed ?

1 Answers   HAL,

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Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.

0 Answers   TATA,

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why commutator is attached with only dc macine

8 Answers   ONGC,

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Can neutral line also be use as a earthting for distribution transformer, or we need separate earthing pit forh the transformer?

1 Answers  

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what is the necessity of neutral in 3 phase system?

5 Answers  

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Can we Co-ordinate relay in Load Break switch?

0 Answers   Bhel,

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a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor

2 Answers  

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Describe: Energy efficient motors

1 Answers   Reliance,

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0 Answers   SGML,

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what is the value of combined earthing in general electrical circiut?

0 Answers   Cathtect Engineering,

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what is oti and wti

3 Answers   Jindal,

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Hi All, I am working as a Technical executive in a MNC company and we have 1500KVA & 1250KVA T/F in our site, can you help me that how many maintenance tests can be conducted and what are the procedures included for the tests can you share yours answers and also give any web address to get more information on this

5 Answers   Hyundai,

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