PLEASE TELL ME ABOUT QUESTION PAPER OF UPCL ENTERENCE EXAM.
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Why DC excitation is used for alternators? Why cant it be AC?
35 Answers ABB, Ace Info, Alstom, Shalivahana Power,
how capacitance is neglected in short transmission lines ?
what are the duty ratings in DG sets?
How to perform a DC resistance test In Alternator and their proceduces?
AC is the magnitude of sinosudial-wave but we use cose value to determine power factor instead of sine value.
Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet
What is different between Regulator & Stabilizer?
why single induction motor is not self starter?
21. What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing? 22. What are the protections to be used for Generator? 23. Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0 24. What happens when the polarity changes in CT? Explain briefly? 25. Explain the Term in CT Name Plate – Class: 5P10
What is a differential amplifier? Also, explain cmrr.
what is auxilliary transformer??
what is lowest system voltage?
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