Answer / jagadeesh

X/R ration means (line reactance/line resistance)
for short transmission lines it is X/R<3.0
long lines it is >3.0
because long lines length of transmission line is due to
this inductance is more(L directly proportional to length of
line)
for short lines L is low due to this X is low (X=2&#8719;FL)
some value divides low vale it is always high(ex: 1/0.1=10)

why we earth only one side of a power cable. And which side is advisable to earth.

1 Answers  

---

How to take vector group test of a transformer? Suppose we dont know the vector group of transformer, how to check its vector group through test? I have 3 transformer DYn11 & DYno& Ynd11, how to confirm its vector group?

1 Answers  

---

Why compensation is necessary in feedback control system?

0 Answers  

---

i want some interview related questions with their answers which can help for attend the interviews...

0 Answers   Janta Glass,

---

what is current overloading in stack

0 Answers  

---

when ur using single phase type of load for a 3.5core power cable .Why neutral is .5 and how much current in the neutral if we consider neutral as a reverse path for three phases.

2 Answers  

---

if 50hz transformer is required to be run on 50% frequency what needs to be done???????????

6 Answers   century,

---

Why does the radius of armature is less than the radius of pole shoe?

0 Answers   ABB,

---

state the working of discharge lamp?

0 Answers  

---

The formular of how to calculate a cross sectional cable to feed an electric motor. Examle: 15KW, 26.1A, 415V. Calculate the cable size in mm2

3 Answers   Sona,

---

What magnetic circuit is formed in berry-type constructions and why?

0 Answers  

---

in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.

0 Answers  

---