why the generating voltage in India is 11kV or why is it be
transmitted as multiples of 11
Answer Posted / chandru_williams
I srrongly disagree with Kavitha. Insulators are made only
for the volateg ratings produced ( 11KV). The actual reason
is as follows.
1. When an alternator generates voltage, its rms value is
given by 4.4*f*$*t, where $ is value of total flux per
pole. So we can see all the voltages are made inevitably
multiple of this value (1.1, which is the form factor of
ac wave). Also it provides us the best economic
construction of step up and step down transformers.
2. We always use a multiple of 1.11 bcoz for a pure sine
wave the FORM FACTOR is the ratio of rms value of voltage
or
current with the avg. value of voltage or current and for
pure sine wave rms value of current is Imax/root '2' and
avg. value is 2Imax/pie. and which comes out to be 1.11 so
we cant have a combination of other then a multiple of 1.11.
Is This Answer Correct ? | 20 Yes | 9 No |
Post New Answer View All Answers
WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?
how to calculate the power factor when instantaneous voltage and current has harmonics in it ?
define hysteresis loss, eddy current loss and windage loss
How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?
can anyone send me some sample question regarding power grid corp
what is the condition for YnD11
When MICC cables used ?
Explain the advantages and disadvantages of hydropower plant?
How many energy meters can be connected on a 15VA Voltage transformer. please send a calculation sheet.
1 hp is equal to how much watt?
What is dynamo?How it works and what is the function of dynamo in a DG.
The moisture in air will condense at
For a stable system, where should the poles of a system be in a root loci plot?
A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is
how to put cable sizing and cable glands size for respective cable & Cable Lug size in a DB sectors???