Answer / maruth sk

Electrical earthing is a low resistance path that directs fault current into Earth

who is ohm's and his law ?

1 Answers  

---

why any inductive load need free wheeling diode?

4 Answers   Essar,

---

11. As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why? 12. How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test? 13. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV? 14. Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it? 15. Explain why the Voltage drop will happen in 3 Phase line? 16. What is the equipment used to control the generator output? 17. What are the factors to be considered during the Synchronization? 18. What should be value of Circuit breaker operating time and tripping time? 19. Why the CT Secondary is rated as 5A generally? 20. At which time Synchronous generator act as a Synchronous Condenser?

1 Answers  

---

In a incandescent bulb, if the glass is punctured, and then power is supplied, the tungsten filament blows up with a flash.Why?

2 Answers  

---

why insulators are colured in brown only?

3 Answers   Transco,

---

Efficient electrical earthing in hard rock area

0 Answers  

---

Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

0 Answers  

---

how to calculate the formula of cable size if motor kw is given

0 Answers   APT,

---

what is shunt trip coil? what was the function in rmu?

1 Answers  

---

How to calculate impedance volt in Transformer?

0 Answers  

---

What is IDMT relay how it works.

3 Answers   Electrotherm, Sulzer,

---

Pure inductive ckt takes power from AC when 1. Applied voltage and Current increases 2. applied voltage and current decreses 3. voltage decreases and current decreases please justify

2 Answers  

---