how to calculate KA rating of C.B?explain with Formula.

1 Answers  

---

What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?

0 Answers  

---

what are the possible reaons & remedies if resistance of NGR getting heat up

0 Answers  

---

The unit of current is the:(a) Volt(b) Coulomb(c) Joule(d) Ampere

2 Answers  

---

What is Black-out and Brown-out situation in the context of voltage stability in power system?

1 Answers  

---

---

Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.

0 Answers   Grasim,

---

-What is leakage current . how much leakage current is allowed.

3 Answers  

---

If a line which is drawing approximatly 2100amps what should be earthing streep size(using galwanize streep)?

2 Answers  

---

In generation,transmission and distribution voltage frequency is either 50HZ or 60 HZ;why are only these frequencies?

2 Answers  

---

why the transformer ratings in kva

8 Answers   NTPC,

---

When electric field is parallel to the plane of incidence, the electromagnetic wave is said to be a.Linearly polarized b.circularly polarized c. Elliptically polarized d. Hyperbolically polarized

1 Answers  

---

why is neccessary Tap changing of power transformer with in a certain time

1 Answers  

---