Answer / usha sharma

form factor of alternating current is 1.1, which is the
ratio of rms value to average value of alternating current.
so generation of ac is in multiple of11, like
11kv,22kv,33kv,44kv etc

Answer / ishaan

The value of form factor is 1.1 which is calculated for the
sine wave. At this value of form factor, leakage flux is
minimum and efficiency is maximum for any electrical
machines. These machines are operated at sine waves.

Answer / saran.then

because the form factor=rms value/average value.so, for
factor is 1.1 .so the rating is always multiple of 11

Answer / remo

At the time of generation there are many type of losses
therefore earlier use to write 10(+/- 1%)kv so thats why we
generally use to write it as 11kv.Since our ancestral make it
a standard of 11kv,33kv,66kv and as the year pass,many
engineers added a new myth of form factor,10% loss of actual
power.....and thus it make us to suffer a lot.
Since there is 230kv and still like 765kv which are not
multiple of 11.
and production in 11kv and 33kv is more ecnomical

Answer / susanta kumar behera

we know that the form factor is the ratio r m s value
to average value which result is 1.1 so ht voltage
rating is multiply of 11.

Answer / piyush

Production of power in 10KV is more economical than 11kv dear REMO

Answer / anand.k

if 1.11 form factor is reason thnt what about 230v
400v ..............

Answer / james

its not a joke.FF is the exact answer for 11 multiples but
we can also get different voltages by tappings in the
transformer secondary.

Answer / muneeb ahmad

it seems that it is due to form factor but Actually it is
not due to form factor,if there is necessarily multiple of
11 then how can we get 400,127 or etc etc....

i think by changing factors and certain conditions it is
possible to minor change in form factor then how we are
getting same form factor since the production of
electricity....

it is just a misconception of introduction of form factor....

Answer / sss

because naveen kumar's luckey number is 11,that's way HT
voltage is multiple by 11.there is no role in ff(=RMS
value/avg value)1.1

transmisssion type

0 Answers  

where they are using surge arrester and lighting arrester? how they connect? what is the purpose of that?

1 Answers  

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

0 Answers  

During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.

0 Answers  

Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)

2 Answers   Sun Pharma,

In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?

0 Answers  

in ceiling fan and table fan what is the rotating part and what is the stationary part?

5 Answers  

should %impedance be high or low in a power transformer? if so why?

0 Answers  

I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com

0 Answers  

WITCH CARDS IN USE IN FIRE CONTROL PANEL.

0 Answers  

there are 3 transformers each of 1500 kva and one transformer of 1000kva for a 11 floor building . total otgoing kw is 4066 kw. i need an extra 260 kw .is there any provision for that? what is the max kw that can be connected with these transformers?

2 Answers  

Transformer calculation

1 Answers   Aramco, LMW Lakshmi Machine Works Limited,