Answer Posted / rr0505

Neutral provides return/ balancing path for the phase
currents and completes the circuit. Neutral can also be
Earthed at source end as per system requirement.
Earth refers to system at mother earth potential, essential
for human sefety.
Ground refers to virtual earth system in Electronic
circuitries in appliances as also Aircrafts/ Automobiles,
etc.

I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

2079

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I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

1891

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what is method for testing CT

2090

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why all the feeders are designed in a particular manner ... is there any reason for that???

1904

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standard earthing rating for power line..

2065

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What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

2121

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why the colour of insultor stack , petticoat is brown. Is it has some technical reason.

1971

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how  do you choose the cable size as per amps rating & the voltage drop for the same.

1724

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While testing LA mast,What are the parameter limits ?

1858

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Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

2127

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WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

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1080

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1123

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I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1831

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what is a bus post insulator? explain its application in a substation.

12515

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