The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current

0 Answers  

---

How do we measure earth fault current in Generator Transformer(20/420kv),Station Transformer(20/11 kv) and Unit Transformers(20/11kv) for our plant system, since these don't have any Neutral earth Fault relay connected to their Neutral Earth? But for Unit Service transformers(11/.433 Kv) we have an Earth Fault Relay connected to its neutral earth.Why is such so?

1 Answers   NTPC,

---

HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com

0 Answers  

---

What is Harmonics & what are its efect & which harmonic is dangerous

5 Answers   IBM,

---

Load break swicth maintenance procedure.

0 Answers   KSEB, L&T, Siemens,

---

---

What is purpose of APFC panel?

7 Answers   Techno Electric and Engineering,

---

how work the lighting arrestor?

2 Answers  

---

what is the circutor?why we use it ?

0 Answers  

---

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

0 Answers   Jindal,

---

What happens if the secondary of the transformer is shorted?

2 Answers  

---

working principles of cf lamp,incandescentlamp and f lamp?

0 Answers  

---

What is four quadrant metering system.

5 Answers  

---