If single phase supply is 220v. then why three phase supply is 660?

Question Posted / anuragkotnala.sunrise

2 Answers
5150 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

If single phase supply is 220v. then why three phase supply is 660?..

Answer / simon

In india there is only 2 type of a.c supply I.e 240 v,440v only.

Is This Answer Correct ?

4 Yes

2 No

If single phase supply is 220v. then why three phase supply is 660?..

Answer / sumit kumar jha

no because one earthing is also present ..so 220v or 440v is perfect answer...same case two earthing also used in 3 phase supply but mainly one taking all times...

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain

0 Answers TNEB Tamil Nadu Electricity Board,

why we use capacitor in lighting fixer

2 Answers

whay is snubber circuit , why we are using snubber circuit in thyristor

1 Answers NEPC,

if flux and load static in dc motor and supply voltage increases 20% then what happened in speed

0 Answers

How i measured Bus bars weight without wighting ?

3 Answers Encom,

when we conduct high voltage testing why milli amp. is required?

2 Answers

Why is reating of t/f in kva but for inverter in kw ?