Why substation battery room is coulered black?

1 Answers  

---

How to work E.L.C.B and how to connect in circuit.

0 Answers  

---

what is a starter ??

2 Answers   NPTC,

---

how to get 48 V DC I have ... 1. 12 volt power supply board 2. DC power supply ( max. 30 v) 3. 9 volt batteries ( 2 - not chargeble)

2 Answers  

---

What is reason to get a power factor nearly zero in resistive loads

2 Answers  

---

---

what are the affects of loose connection in electrical circuit.

14 Answers   HP,

---

How check proper electrical earthing of machine.

5 Answers   DRJ ARDE,

---

Difference between rating factor of cable and derating factor of cable?

0 Answers  

---

in telecom we are using neutral?

1 Answers  

---

If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a campus site?

2 Answers  

---

How do you find HT and LT sides of a distribution transformer only by looking at it from outside?

1 Answers   Nespak,

---

how to calculate short ckt current of trafo. ex.3-ph 3MVA trfo. 11/440, impdence voltage=7.25%

1 Answers  

---