Answer Posted / safdar

dear.first we need to know about amp range.
example 50 amp which i have to select cable size according amp load.
amp range/5 up to 30 amp
and amp range / 4 up to 125 amp
more than it amp of range amp /2

what is a pilot wiring and whys that called a pilot wiers

1919

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main difference between ac and dc?

1707

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In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

2212

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What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?

2653

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which metal is use in shunt

6579

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What is meant by cold loop test in instrument

2602

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what is mppt (maximum power point tracking ) and how they used in solar power generation ??? what are the main components used in mppt?????

3315

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why swityard is necessrry requirement in any bis power distributin systems?

2373

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What is Load sharing of Transformer ?

2034

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What is the permissible maximum flux density in transformer core?

1232

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What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

2360

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How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

2277

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what is JE exam?

2165

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What is the difference between in Fourier series and Fourier Transform. and please tell me the difference between both of them and the why we use them in communication system?

2017

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i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors

1851

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