Answer / probal mitra

It is due to the skin effect, which reduces effective
crosssection of conductor carryin A.C. current. hence the
resistance increases and larger conductor is reqired.

I want to know which cable would be best to carry 125A current to a distance of 50m. Voltage is 3phase. Kindly share the formula with answer.

1 Answers   Medway Educational Consultant,

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How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

0 Answers  

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11 kv metering is done in my factory.Meter show PF 1.000 but kvarh lag&lead show 24&94 respectively & Avg.PF is .956 .? is what i do for inproove my PF to 1.000

3 Answers  

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how to control the generator output voltage? what r the condition should satisfy for synchronization?

7 Answers   HP,

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what is joule?

2 Answers  

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Explain advantages of storage batteries

0 Answers  

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difference between a four point starter and three point starter

9 Answers  

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How many companies are manufacturing 33 KV HT Breaker

1 Answers  

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Dear Sir how much cable size required from 0.75 kw to 50 kw for electric motor or pump

1 Answers  

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What is the difference between a Junction Box and a Marshalling Box?

8 Answers  

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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The initial current is very large at the time of starting for almost all DC motors. SO WE USE STARTER FOR A SAFE STARTING but at our homes we don’t see any starters in our coolers, motors.WHY DON’T WE NEED STARTERS FOR THESE APPLIANCES?

1 Answers  

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