sriman


{ City } hyderabad
< Country > india
* Profession * engineer
User No # 22919
Total Questions Posted # 4
Total Answers Posted # 5

Total Answers Posted for My Questions # 33
Total Views for My Questions # 119103

Users Marked my Answers as Correct # 551
Users Marked my Answers as Wrong # 68
Questions / { sriman }
Questions Answers Category Views Company eMail

Why all voltage levels are the multiples of 11KV?

KSEB,

10 Electrical Engineering 50867

how does electrical train works and what type of motors are used to drive the train? which level of supply voltage is used?

Alstom, Infotech,

22 Electrical Engineering 59277

what is excitation system explain in detail with its working?

Toshiba,

1 Electrical Engineering 7458

HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

 Electrical Engineering 1501



Answers / { sriman }

Question { 10400 }

what is the different betweem earthing and neutral?


Answer

Connecting the conduction part of network to ground is
known as earthing where as connecting non conduction part
to ground is Grounding.

Is This Answer Correct ?    5 Yes 9 No

Question { 10070 }

why the transformer secondary voltage is more than the load
end voltage like t/f 11KV/433V for 415V(terminal voltage)


Answer

The voltage variation between secondary terminals and load
end voltage is because of voltage drop existing between to
systems

Is This Answer Correct ?    3 Yes 2 No


Question { L&T, 133669 }

What is OLTC in a transformer, specify its fuction.


Answer

OLTC MEANS ON LOAD TAP CHANGER
THE FUNCTION OF OLTC IS TO CHANGE THE VOLTAGE LEVEL OF
SECONDARY SIDE OF TRANSFORMER ACCORDING TO CHANGE IN LOAD
TO MEET THE REQUIREMENT AND TO KEEP THE VOLTAGE CONSTANT
WITHIN THE LIMITS

Is This Answer Correct ?    517 Yes 41 No

Question { KSEB, 50867 }

Why all voltage levels are the multiples of 11KV?


Answer

Hi Johince can u please explain in detail i didnt
understood
how can u say that transmission line consumes 10% of power

Is This Answer Correct ?    20 Yes 15 No

Question { NTPC, 10082 }

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.


Answer

can u give me the answers for Q5, Q6, Q9

Is This Answer Correct ?    6 Yes 1 No