Answer / ahmed

3phase 3wire with out nutral
3phase 4wire with nutral

Answer / mohammed mushtaq

3phase 3wire meter employ 2 watt meter method while 3phase 4wiretmeter employ 3watt meter method to measure energy

how freewheeling diode improves the powerfactor

0 Answers  

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how tubelight circuit is connected and how it works?

7 Answers   Punj Lloyd Ltd,

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What is the tolerence limit between neutral and earth in 230 V AC System?

7 Answers   NTPC,

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why transformer core is eathed?

7 Answers   ECE,

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1.what is the basic difference between surge arrestor and lightning arrestor and where we use it. 1.what is the difference between metal oxide without gapped lightning arrestor and with gapped lightning arrestor

2 Answers  

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For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

0 Answers  

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in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

1 Answers   NTPC,

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what is RMU ?

26 Answers   MacLellan, Shalaka Infra Tech,

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what is the difference between a feeder and a cable?

3 Answers  

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Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks

0 Answers  

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1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)

0 Answers   L&T, PK,

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How many earthings are required for motors?

3 Answers  

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