Answer Posted / nandagopan
This is found in telecom area.most of the phone wires are
copper.its almost exposed to atmosphere,sand and corrode
producing copper oxide this is why copper act as positively
charged ion to act with negatively charged oxygen.so a wire
with a positively charged accelerates corrosion.to slow down
the positive is grounded to give a negative charge.
| Is This Answer Correct ? | 4 Yes | 3 No |
Post New Answer View All Answers
limitation of conductor height on ground when we consider EMC
what are the interview question asked in wind mill about electrical
Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?
any idea abt REVERSE METERING concept.........?
what is cathodic protection and why it use in industries?
We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.
On what basis the the size of Lightning arrester for buildings are selected ?
what is the grounding Calculation formula? spouse i want to provide grounding to 3phase 18kw motor or i want to provide ground to 3phase 10kva dry type transformere or you give me any exemple...... Thanks.
33kv Rated output avilable in market (any where in india)
why ht cable end termination don't have a gland?
diameter of cable and core is doubled then the value of capacitance is
Why using synchronising methed in DG's sets?
hello!my name is sheikh iam preparing for indian engineering servieces,please send me the old question papers..to sheikhshaazforjobs@gmail.com
sir plz send some previous year questions of jspl.
if a.c supply is given to the motor,, what happen?
