Answer / vishnu kumar

It can be justified from the phasor diagram....the effective
value can be determine as sqroot(3)*v.

Answer / syed qamar abbas

Because its a phasor sum not an arthimetic sum, all three
phases are displaced each other 120 degree apart, so we
have to add them taking consideration of this angle

Answer / chuck rogers

The sum of any 2 phases is 440. This is a rough estimate as
several factors can play on the load side of the circuit.
Between any one wire (phase) and ground can be 207VAC to
277VAC (with no Load). It's that way because the electrons
said so . . . I talked to them last week.

how do the stepper motor works.

1 Answers   Vardhman,

---

explain how to protect high rise building from the risk of lighting.

1 Answers  

---

Control wiring of a dol starter for forward and backward

0 Answers   Basj Industries,

---

what is positive,negative and zero sequence in power system?

4 Answers  

---

I AM COMPLETED DIPLOMA IN E.E.E. AS WELL AS B.TECH IN ANDHARPRADESH.. HOW I THE Certificate of competency as Electrical Supervisor.

1 Answers  

---

how can we calculate cable size

1 Answers  

---

where we take earth in hill station

1 Answers  

---

Why scr and igbt used in  ups systeam ????

1 Answers   JLL,

---

why we step/down voltage in multipul of 11kv?

4 Answers   Siemens,

---

why solinoid coil used in tripping rely?and why not other type coil?

1 Answers  

---

Meter p.t. ratio= 3×230/400 , c.t.ratio = 3×1 (2) A what is m.f.

0 Answers  

---

How two nos. 130 kw D.C motor get synchronise using D.C drive.

0 Answers  

---