What is SF6 Circuit Breaker?

2 Answers   Amdocs,

---

Why different types of connection in transformers are used? (star/star,star/delta,delta/star,delta/delta)Why we are only taking in consideration of star/delta type transformers? if only star/delta is good in practice where doses other type of transformers are used? Note: i want to know place of using different types of transformers other than Star/delta type with brief description.

1 Answers   Electrical Tech,

---

What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV

0 Answers  

---

what is power factor for any engineering equipment?? what should be its value?

3 Answers   ETA,

---

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

2 Answers   Future Group,

---

How to do stting of vl250 siemens MCCB

0 Answers   Qatar Steel,

---

what is the difference b/w UHVDC and HVDC(LIGHT)?

4 Answers   L&T,

---

Which one hurts more AC or DC Current ?

10 Answers  

---

what is negative phase sequence

1 Answers  

---

What is the difference between body earthing and neutral earthing?

2 Answers  

---

How to distinguish whether MCB is DC or AC looking at it physically

0 Answers  

---

why 400Hz is used for aircraft systems ?

14 Answers   Cabin Crew, Jet Airways,

---