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Question
what is vector diagram in three phase transformer
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
DNY11 
Is This Answer Correct ?    1 Yes 10 No
Sekhar Guttula
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?   1
WHY VOLTAGE REGULATION OF AN ALTERNATOR IS NEGATIVE FOR A LEADING POWER FACTOR?   1
What happen if 1200KW/1500KVA alternator runs at no load and high R.P.M.for one minute?   6
WAHAT IS ELECTRICITY Vijai-Electricals 5
what is the tolerance of electrical frequency for India? it's .5% or 1%?   7
which is better 50 HZ supply or 60 HZ supply?   6
is any body explain me why return current in three phase power system is less then in a red, yellow, blue phases??? as we know Ir+Iy+Ib=In then why nutral wire has less then phase current???? Bhel 2
what is the formular for the calculation of CT'S when installed as part of a electrical installation so the correct meter is used   2
How much current can a 3-1/2 core 100 mm wire carry? Focus 3
Where there is voltage,there must be current.Is this right or wrong??   10
how to identified power tranfer line is how much KV???? Essar 5
what are the method of testing of transformer?? Ncc 2
 
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