Answer / k

use IS 3043

earthing cond size in sq mm S = A * sqrt(t)/k

A = fault current in amps
k = factor given in IS

refer website : www.jptechnosoft.com

why transformer impedance measure in % (percentage)

4 Answers   Hindalco,

---

High Voltage out door substation-annual maintenance, things to be considered

1 Answers  

---

how to calculate voltage regulation?

1 Answers   Qtech Software,

---

what is a FACTS devices? what is mean by STATCOM????

1 Answers   IIT,

---

name of good resistance material

1 Answers  

---

following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

0 Answers  

---

When do you use a VFD motor?

3 Answers  

---

please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com

0 Answers  

---

what is entropy?

3 Answers   NTPC,

---

why in some cases the receiving end voltage is higher than the sending end voltage in transmission line (called 'Ferranti effect') ????? whts the reason behind tht???

3 Answers  

---

what determins the amount of voltage produced by a voltaic cell?

1 Answers  

---

160 kw motor running use 2R* 150 SQ mm cable

0 Answers   ID,

---