1.what is the contact resistace of CB ? 2.radioactivity should be mesured with---------?

3 Answers   Power Grid,

---

The series field winding has low resistance while the shunt field winding has high resistance. Why?

0 Answers  

---

why make protection 85% of winding?

1 Answers  

---

how to calculate load if i have three phase & single phase connection from power transformer( in term of kw & kva).can i take single phase load/3 for total kw calculation

1 Answers  

---

What is meant by operating sequence of VCB : 0–0.3sec.–CO– 3min.-CO

2 Answers  

---

---

What is the real use of reactive power in a electrical system other than loss (inductive &capacitive).I want to know its real physical significance.

0 Answers  

---

What is restricted earth fault protection ?

1 Answers  

---

why the transformer has no starter

2 Answers   NTPC,

---

why it is mentioned as 8/10 mva transformer why not directly 8mva or 10mva transformer. please explain me the full detailed reason.

4 Answers   Qatar Gas,

---

why core losses and copper losses does not depend on power factor?

5 Answers  

---

how to find out difference between ELCB, MCB and RCB on looking on it

1 Answers  

---

what is slip what is the use of slip?

1 Answers  

---