Answer / k.prakashchandra

It is usually 1

Answer / irfankh

1=1

When we giving the 3 phase supply to ups system how to coming netural?

0 Answers   Juniper Networks, Tata Motors,

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I got shortlisted in RRB thiruvananthapuram for the post of Junior Electrical engineer, waiting List - 7. i want to know about the validity of the current list and chance to get the job please help anybody knws abt it,, thank you

1 Answers  

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what is stalling of a motor?

2 Answers   BTCL,

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What is disadvanage if power factor goes to in leading..?

0 Answers  

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i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com

0 Answers   RRB,

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How do we measure earth fault current in Generator Transformer(20/420kv),Station Transformer(20/11 kv) and Unit Transformers(20/11kv) for our plant system, since these don't have any Neutral earth Fault relay connected to their Neutral Earth? But for Unit Service transformers(11/.433 Kv) we have an Earth Fault Relay connected to its neutral earth.Why is such so?

1 Answers   NTPC,

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We have three 33kv substations. All of them energised by same source.When i am checking the phase sequence between one substation to other substation (like R Phase to R Phase) by multimeter i am getting some voltage.Near to LT panels UPS panels are there. Can u explain whether any possible to happen like that. In Phase SEquencemeter is showing correctly in both substations. How is it happen. Explain me.Explain me communication signal will produce Phase difference on this case.

3 Answers  

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is 60hz freq better than 50 hz?&why?

1 Answers  

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What is the maximun current carring capacity in per phase for three pole 100anps rating ncb

3 Answers   L&T,

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Why do we mostly prefer to generate and distribute electricity in 3 phase and not in 4 phase or 5 phase?

0 Answers   IOCL,

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What is dc current source?

0 Answers  

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what is the difference b/w neutral and earth?what is the need of earthing and what are the different methods for earthing?

4 Answers   NTPC,

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