how much the voltage & resistance should be ,between earth & neutral points.?& why?

6 Answers  

---

want happens when a dc is given to a commutator

2 Answers  

---

what are the protection relays for trasformer

3 Answers  

---

Why a ballast and ignitor is required in MH and other lighting fixtures

2 Answers   Future Group,

---

what do you mean by class PS CT and what are technical details needed for calculating it?

0 Answers  

---

what is the breaking capacity and making capacity of circuit breaker and how

0 Answers  

---

How ElCB tripping if Neutral touch with ground

4 Answers   Sanmar,

---

slor cell made?

1 Answers  

---

what is the use of vector group in transformer. means what r the application of various vector groups?

5 Answers  

---

Wht ar the reason for low voltage on consumer side?

6 Answers  

---

ro plant grundfos bm30type pump.we start the pump using siemens 3rw 4423-1bc44, 30kw soft starter. bur its failier frequently. so we planed to change the dol starter. sp please tell me any budy its possible or not翿შ†

1 Answers  

---

How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.

0 Answers  

---