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.

difference between ceiling fan

24 Answers   Altius Technologies, Raisoni, TCS, Uni Deritend,

---

What will happen to the speed of synchronous machine subjected beyond the pull out torque? Are the behavior shown by rotor remains same for both the alternator and motor?

1 Answers  

---

What do you understand by avr?

0 Answers  

---

why SCR use in power plant

1 Answers   Edison,

---

For example, if I use Star delta transformer for distribution, Can I Connect 230 V lighting load bewteen secondary phase & primary neutarl. What will be the effect, if I connect in this manner?

2 Answers  

---

---

HRC full from

6 Answers  

---

In power generator sets, when they are coverted from 50hz to 60hz, the kva rating after conversion increases. For example, the manufacturer of a perkins 200kva @ 50Hz generator set has mentioned it to become 220kva after converstion to 60hz. What is the relation between the frequency & the KVA rating. Any formula please.

3 Answers  

---

how to test and calculat the head and discharge in borewell compressor

0 Answers  

---

what is entropy?

3 Answers   NTPC,

---

How Self works in DG set

0 Answers  

---

a bulb of 100W and anather bulb of 200W , rated supply voltage 230v.when supply voltage is reduced to 100v,which bulb will give more light? and why with calculation?

12 Answers  

---

Transmission through a short line depends on

0 Answers  

---