Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc.

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Why high Voltages come in multiple of 11, like 11 KV, 33KV,
66 KV, 132 KV etc.

Question Posted / manoj gupta

11 Answers
20812 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / bhanu prakash

ac voltage of the system is measure in rms voltages,
so rms voltage= avg. voltage * form factor.
form factor of sinusoidal voltage is 1.11
since every avg. voltage multiplied by factor 1.11, high
voltage come in multiple of 11 only

Is This Answer Correct ?

58 Yes

11 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / shibuss

I dis agree with all the answers above.
There is no mathematical/electrical reason.
If form factor (1.11) or multiple is the reason what about
400kv and 765kV (Highest transmission voltages in India)

Is This Answer Correct ?

9 Yes

0 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / raju ravula

rmsvoltage/averagevoltage=form factor,in
transmisson,distibution systems voltages are rms only,the
form factir of sinesoidal wave is 1.11

Is This Answer Correct ?

4 Yes

4 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sandeepraj

i agree with ans 9
it not like multiple factors, they are just standerd values

Is This Answer Correct ?

0 Yes

0 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / vinjam sasikumar

rms value = form factor * avg value
basically thee value of form factor is 1.11
so the ratings are in multiples of 11 kv
When the capacity increases, this is not true. It becomes 800kva, 1000kva

Is This Answer Correct ?

0 Yes

3 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sanju

yes i agree with the 1st answer. its almost the perfect answer

Is This Answer Correct ?

0 Yes

4 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / shanku

needed authenticated scientifically pl.

Is This Answer Correct ?

1 Yes

7 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / susai

i agree with answer no.4. it is absolutely correct.

Is This Answer Correct ?

1 Yes

12 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / guru

Its the british standard of making it in multiples of 11.

But as per US standard the HV voltages dont come in
multiples of 11

Is This Answer Correct ?

4 Yes

20 No

Why high Voltages come in multiple of 11, like 11 KV, 33KV, 66 KV, 132 KV etc...

Answer / sujeet kumar singh

i agreed with answer no 1 , but main reson is scientist Sir
G.V. volta invent 1.1 v battery so on behalf of sir volta
we multyply by 11 in volt.

Is This Answer Correct ?

2 Yes

28 No

Post New Answer

More Electrical Engineering Interview Questions

What is the difference b/w RMU & substation

1 Answers

sir what is the minimun earth resistance value of an industial bit and grid bit ? and Why?

1 Answers Kirloskar,

What is generator

1 Answers Mytrah Energy,

how much insulation resistance 11kv & 33kv under ground cable between earth to phase & phase to phase.

4 Answers Siemens,

what is anode and cathode??

5 Answers Bombardier,

is there any phase difference occurs while primary and secondary side mutual induction occurs?

0 Answers

What range of speed can you get with the armature control method of speed control of d.c. Shunt motor?

0 Answers

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

0 Answers Amara Raja,

ADVANTAGES OF DIGITAL COMMUNICATION OVER ANALOG.?

1 Answers Google,

AC is the magnitude of sinosudial-wave but we use cose value to determine power factor instead of sine value.

2 Answers

can i know how to design overcurrent setting and earth fault for 11kv & o.433kv system assuming tx 1000kva.

2 Answers

How to decide the fuse ratings for potential transformer

2 Answers Eskom,

For more Electrical Engineering Interview Questions Click Here