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1)Why electric shock is feel ?? n in a Electric Train why
we didnt feel that ?
2)What is the reason for transformer Noise ??
3)What is relation b/w Transmission Lines & Communication
Lines ?
4)Which material is used for making Transformer oil & How u
measure its dielectric strength & Name the test ?
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Answer Posted / 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.
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