Why ELCB trip, when neutral touch with ground?

1 Answers  

---

What shocks us , Current or voltage?

21 Answers  

---

There are 2 motors without name plate and terminal but one is DC motor and another is induction motor.How one can identify which one is DC and which one is AC motor?

6 Answers  

---

what do you understand by dressing a HT/LT pole

1 Answers   Federal Polytechnic Nekede,

---

what are the principles of a booster converter?

0 Answers  

---

what is the best transformer oil breakdown voltage?

0 Answers  

---

HOW MUCH CURRENT CAN CARRY A 50 kvar DELTA CAPACITOR BANK?

2 Answers  

---

can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...

0 Answers   GKB,

---

What is the difference between ohmic resistance and effective resistance?

2 Answers  

---

why the projects getting loss?

0 Answers   SBPL,

---

why are we using resistor in NGR ?

1 Answers  

---

We have one 500KVA transformer. We have tested REF relay and commissioned. After one and half year, due to some ground fault in one of the DB circuit Transformer tripped by REF relay. What will be cause and remedy. Please advise?

1 Answers  

---