Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / k.c. bankar
When a high voltage transmitted in a
transmission line, due to magnetic effect on the core of
the conductor all most all electrons passes on the surface
of the conductor.And When dielectric voltage becomes more
than 30v\cm . So the air outside the conductor surface
becames conducive and looks bluish and due to dielectric
breakdown of air a hissing noise comes from surrounding,
Called as corona !
Due to corona OZONE formation on the outside surface of the
conductor. The effect of this to the power system is called
as corona effect.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the real function of reverse power relay in generator panel while syncronising?
what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth
how to calculate the lightning arrester conductor @ no of earth pits required
Difference between earthing & grounding.?
is it possible to have dc motors on single chip
what is meant by twilight switches 7 where its applicable ?
How to find ampere on ht side for selection of cable size ???
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
what is meant by flywheel and its role in retardation test
what is the voltage rating of chiller unit sensors
if we have 320KVA Genset kindly advice how much load we can put it.
How can we design a HVAC Plant room which includes AHU,FCU,Chillers,Cooling towers, Pumps etc & how will they work? any Drawing if possible?
how could we know the size of cable by physical view?
my b-tech percentage is 50%. what answer will satisfy the hr ?
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
