Answer / teja

Is it 3-Ph or 1-ph if it is single phase the circuit will
get open because the the current has to have a return path.

If it is three phase star network the circuit will get
unbalanced

Answer / javad

if the circuit is 3 ph the load beyond the neutral come across tow line (ie;440 v instead of 230 v) then the low wattage equipments will damage,high wattage equipment can withstand the high volt

Answer / kj

Both answers above are true but do not explain why.
With a 3 phase load an artificial star point is created to
replace the neutral. In a perfectly balanced load this will
have no effect.
If the load per phase is unbalanced the where the star
point is created will depend on the load unbalance. the
voltage phase to neutral may increase in one phase and
decrease in the others.
In one instance I have seen this where the voltage in one
phase increased to 300 in a 416/240 volt system.

what are the uses and applications of rectifiers?

3 Answers  

---

what is load despatching

0 Answers   NTPC,

---

How to calulate Locked rotor amper(LRA) for compressor type motors?

0 Answers   MAF Dalkia,

---

WHY THE SYNCHRORONOUS MOTOR IS NOT SELF STARTING, AND WHY THE STATOR AND ROTOR IS COUPLED?

3 Answers   Essar, GCUF,

---

how many types erthig

6 Answers  

---

---

what is difference between delta-delta,delta-star transformers ???

3 Answers  

---

Our Alternator nameplate specifies a power factor of 0.8. When the Alternator is on light load, the bus bar voltage rises to 11240 volts, whereas the standard value is 10500 volts. Is it ok to increase the power factor to 0.85 or 0.9. I am afraid because the power factor on the name plate is only 0.8 ?

3 Answers   Escube,

---

how we can calculate cable size of 230v,1 hp single phase motor ? panel to motor distance is 25 meter

4 Answers  

---

What is meant by impedance? difference between high & low impedance ?

0 Answers  

---

Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?

2 Answers  

---

there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

---

Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

0 Answers  

---