Answer / karan rana

The neutral is the normal "return" wire: in systems where
the load is supplied from only one hot (or "live") wire, the
neutral completes the circuit and carries current back from
the load to the power station.

The ground or "earth" wire is a circuit's safety protective
wire that normally carries no current

Answer / avd

Neutral - Neutral is the star point of a 3 phase
transformer with star connection of secondary. This star
point will have zero potential under balanced load
condition. This star point may or may not be connected to
earth depending on requirements of power system.
Earthing - Earthing is ground potential (ZERO) connected to
mother earth via earthing pit.

Answer / amal kumar mahata

If we thinking the MCCB the live line and nutral line monitoring the system. If any abnormality found the system load it will functioning and cut off system. Where as earth wire have zero potential and it should be connected to earthpit.

Answer / g narayanarao

Neutral is star point of the transformer of secondary winding and it protect the system and named as system earthing.
Earthing is solid grounding which protect the human and animals and named as equipment earthing.

why the current is denoted by the letter 'i'

1 Answers  

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What is UPS?

14 Answers   HSL,

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Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.

0 Answers  

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in what type of applications v can use q meter?

0 Answers  

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it is clear that volts equal to the current as per ohms law. is it appliable to the AC power or only for DC. if it is appliacable to AC in transformers when voltage increases the voltage decreases ????? why??????????????

13 Answers   Bhel,

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what is counter poise conductors

0 Answers   IBM,

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how freewheeling diode improves the powerfactor

0 Answers  

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Based on CPI/CGPA they shortlist the candidates & than directly start Interview so there is no Written Exam or GD Only PI.Interview held @ MNNIT , ALLAHABAD On-Campus on 6th,Aug, 2007 & the Questions asked to me by Interview Board ( 4 People) are from HR/SummerTraining/BTP/Subject-core, POWER SYSTEM & MACHINE. time duration of I/V is about 15-20 Minutes. HR- Q.1 Name,hobbies & About family background ? Q2.What u know abt NTPC ?? Q3.Why u want to choose NTPC as ur Carrier's starting i.e power sector not any other Oragnisation or sector ?? Techincal Questions- Q1.What is the reason for transformer Noise ?? Q2.Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ? Q.3 Which Machine u will prefer 2 use if flammble gases are coming out at a place & why ?? Q4.What is relation b/w Transmission Lines & Communication Lines ? Q5.What is the maximum capacity Synchronus Machine & total powerGeneration in our country ? Q.6 In india Power generation is at 50Hz while in America its 60 hz ,why so ?? Advantage or disadvantage ?? Q.7 Maximum Generation Voltage in india ? Q8. What is the Voltage regulation & why its required n how much is permissible ? & causes of voltage variation ?? Q.9 Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? Q.10 Have u seen/ experience of any power plant/ industry related to the power sector ? so these are the questions which not too diffcult i think was asked to me.

6 Answers   NTPC,

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On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

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How will I know that how many batteries I should connect to my UPS unit?

3 Answers  

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I have two PLC processors. I want to communicate both processor with each other. How i can do so?

0 Answers   IHG InterContinental Hotels Group,

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In a 3Ph induction motor(old) 6 wires came out from terminal & not mentioned u1,v1,w1,u2,v2 & w2. how can find out the terminals? how can connect to star delta starter??

1 Answers  

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