Answer / neeraj julaha

I read only about corona effect when the
EHV transmissions lines which are used
on power stations
get a max value of voltage then we could
saw the corona effect its a layor of
environment gases which gets ionised
due to voltage pressure and make a
hinsing noise also as we hear when we
get under a power transmission line so
that effect is called the corona effect for a
better assistance u may call me on
+91800669857

Answer / kailash

ESP means Electro Static Precipetator it is work on corona effect.ESp two type of insulator used support insulator & shaft insulator. It is used Power plant, Songe Iron plant, Sinter Plant etc.

Answer / shivaleela

I am going to explain about Corona.
Mainly Ozone gas is produced by corona discharge method.
In this method , Electrodes are the main components. In one side , Oxygen is passing, another side High Voltage(5kV), is passing, Due to apply of high voltage oxygen molecules broken and formed into 0 & O. This O will get mix with O2, and form into O3 that is called Ozone gas. This Ozone is mainly used for purification of water, air treatment, STP etc. If u want more information call me 7760572952

What aturn on methods of scr?

0 Answers  

---

while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?

0 Answers   Voltech,

---

Is there any other method of damping the oscillation in a synchronous motor other than using damper winding and if yes what is it?

2 Answers   IOCL,

---

what the purpose of transmited high voltage in over head lines

3 Answers   NCC,

---

why CT ratio stand for 50/5, 100/5, 25/5.

11 Answers   ABB, Ramky,

---

---

When we synchronize the Generator BKR with TIE BKR then Gen BKR is hold but TIE BKR is Tripped on Non directional over current but when TIE BKR is Syn. with Gen. BKR then no fault occur so what is the problem

1 Answers   ABB,

---

If there is volagte between earth and neutral, what should be the reason ? and solution * What should be allowable limit in case, if the voltage between earth and neutral exist ? / OR what is limit for safe voltage between earth and neutral?

3 Answers  

---

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,

---

33kv Rated output avilable in market (any where in india)

0 Answers   C2C,

---

What is the make of breakers, transformers, generators? What are their capacities and ratings?

1 Answers  

---

transmisssion type

0 Answers  

---

why we use ac system in india why not dc

3 Answers  

---