if single phase is having 220v supply then why three phase is having 440v instea

if single phase is having 220v supply then why three phase is having 440v instead of 660v?

Question Posted / ranjanatwr9@gmail.com

4 Answers
7049 Views
C&S, NTPC, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

if single phase is having 220v supply then why three phase is having 440v instead of 660v?..

Answer / gaurav kumar

in case of 1 phase the voltage is measuered between one phase wire and another neutral. And called phase voltage. Whereas in 3 phase line voltage is measured and used

Is This Answer Correct ?

4 Yes

2 No

if single phase is having 220v supply then why three phase is having 440v instead of 660v?..

Answer / rinkesh

I phase = 220(I line) × 1.71 (root 3 )

Is This Answer Correct ?

1 Yes

1 No

if single phase is having 220v supply then why three phase is having 440v instead of 660v?..

Answer / sanjeev

voltage means potential difference between two points. In case of single phase potential difference between phase and neutral is 220v.
in case of three phase(R,Y,B) potential difference between R & Y is 220 and Y& B is 220

Hence the voltage offered by a three phase(LT) system is potential difference between Three phases i.e. 220+220=440 volts.

Is This Answer Correct ?

0 Yes

2 No

if single phase is having 220v supply then why three phase is having 440v instead of 660v?..

Answer / m.md rafi leo

In 3 phase supply any one line act as neutral

Is This Answer Correct ?

8 Yes

16 No

Post New Answer

More Electrical Engineering Interview Questions

how the grounding[earting] is achieved on ships.

1 Answers

what is the working principle of tube light?

2 Answers

Why neutral is not used in three phases dol starter

0 Answers

what is the material use in bus bar & why.

3 Answers

Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 Answers

upto how many load can v connect to stabilizer which is used for tv

0 Answers Sandvik,

how fluoresent lamp works??

2 Answers

if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

0 Answers

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

0 Answers

DIFFERENCE BETWEEN GROUND AND NEUTRAL?

4 Answers

please send me last 5 year interview questions

0 Answers ONGC,

how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

2 Answers

For more Electrical Engineering Interview Questions Click Here