Answer / sbb

1) This is a simple thing, as we know that current is define
as flow of electrons and at a same time flow of electrons
from higher potential to lower potential is called potential
difference.so whatever the shock we feel is nothing but
power i.e., P=V*I.that is electrons will flow in body
nothing but current and from body to ground is voltage.
In Electric Traction power is taken in the locomotive
through ht bushings and it is proper insulated.

2) The reason y noise will occur in transformer is due to
the electromagnetic induction in primary and secondary,as
well as due to leakage flux in the core.

3) Transmission lines:We use material made of Aluminum
conductor in Tr.lines and it is bare conductor.there may be
a corona effect in tr.lines.
Communication lines: We use material made of copper and a
same time it is a screened cable,for which there is no
interference with power line or and other form.

4) Material used for Transformer Oil is Product of Petroleum
products and the scientific name of the T/F oil is
Askerals.Dielectric strength of the T/F Oil test or it is
measure by "Break-Down Voltage" test.

Answer / kaarthikrt&c

ya hi rajkumar i agree wit u its due to vibration but i had
not conformed tat the answer was correct

Answer / kaarthikrt&c09894209497

1.if v touch a live wire,using ur body it gets a ground so
u feel shock,in case of electric train every compartment
wheel is grounded(negative dc) so u cont get shock even if
fault occurs
2.i think its corona loss
3.trans lines used for carrying power,trans lines can also
be used as a communication line using PLCC power line
carrier communication
4.material who needs/IL335 is the indian standard oil for
tfmr oil.u can measure the dielectric strength by doing a
Break down voltage test(dielectric test for oil)

Answer / vasavi

1 electric shock ocuurs coz our body acts as a
path /conductor for current.
current lows frm faulty equipment - though us - and then to
ground
we dont get shocks in train i think bcoz in trains our
bodies are not grounded ,its moving

2 tf noise occurs due to a phenomenen
called "Electromagnetic striction"

4 T/f oil is made from crude petroleum (actually by product
during petroleum manufacturing process ) its purified n
used
Well i dont know the test name

Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.

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