Answer / anand

nc is normally contact to common terminal,when gives supply to the relay common contact to no contact

Answer / k.prakashchandra

You mean the aux switches of cb ? There are NO and NC
contacts (determined when the cb is in open position)which
operate when the cb opens or closes.

what is the effect of back reactive power on the generator ?

0 Answers   MRF,

---

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

---

what is two point starter?

0 Answers   SGF,

---

what is the RMU and RMU system in sub-station(11kv,66kv.....)

2 Answers   Alstom, Torrent Power,

---

What is the purpose of taking Capacitance and Tan Delta Test in Transformer bushing?

1 Answers  

---

What is the reason behind 11kv 33kv 132kv.....means multiple of 11?

6 Answers  

---

Define liftable weight of a transformer? Does the total weight of transformer include oil weight?

0 Answers  

---

Why AC & DC capacitor are use in UPS ??????????????????

0 Answers   Sanghi,

---

how we select the mva rating of the circuit breakers?

1 Answers  

---

magnetic circuit consume energy

3 Answers  

---

what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

0 Answers   Areva,

---

what is tandem isolator ??????????

5 Answers  

---