Answer / shanth

its a 100 mW power plant switch gear is 11kv.how we can use
11kv sysytem for a 100mw planrt it will result in huge
losses.any way to answer this question it would be 200MVA
transformer and 11kv siwtch gear

Answer / digambar

1.rated current
2.sc capacity
3.sc capasity withstand time
4.cable sizing

why we r used APFC Panel in industrial area.when P.F. low then wat will be the effect in our system?

10 Answers   ABB, Georgio Rocks, Piramal Healthcare, Zenith Engineering Corporation,

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how braking & making capacity of circuit breaker are calculated?

0 Answers   Bhel,

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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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Why fuse is? What will prevent by fuse?

2 Answers  

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This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

0 Answers  

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What is differential relay ? where it can be used?

1 Answers   Scope International,

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Please define ohm’s law for a.c (alternating current)?

0 Answers  

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what is resonance in electrical circuit and its effect? where we get high resonance and low resonance?

1 Answers  

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what is meaning of bus riser

0 Answers   TeamLease,

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Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

0 Answers  

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what is relation betn. KW & KV?

10 Answers  

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Why 60Hz frequency is used in America what are all the benifits?

5 Answers  

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