Interested to Buy Any Domain ? << Click Here >> for more details...
Whats the principle of lightning? How protection against
lightning is achieved? Types of protection? How to select
the height of lightning spike? as per the area.
- 4 Answers
- 11353 Views
- HAL, I also Faced
- E-Mail Answers
Answer Posted / will
Lightning occurs when the negative charged cloud and
positive charged clouds hit together.A flash occurs and it
tries to conduct through the atmosphere.
Protection through lightning is achieved by installting the
lightning arrestors at the top of the high rise buildings
and grounded separately.The grounding shall be separated
from the normal ground grid in the petrochemical plants.
We need not to select the height for the spike , when the
building or the equipment is proted by lightning arrestor ,
the lightning arrestor will take care, The surge will be
arrested by the lightning arrestor and current will
directly flow to the ground without causing any damage to
the equipment(Substation) or the high rise buildings.
| Is This Answer Correct ? | 28 Yes | 4 No |
Post New Answer View All Answers
What id difference between power and energy?
What is the simplest formula to calculate the rotor diameter of a synchronous generator?
why current is constant on d.c?
We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.
What are the commonly used schemes for the bus zone protection?
whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?
is the value of inductance depends upon the value of thitha in doubly excited machine??
Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used
Draw the line diagram of diffretial relay connected to transformer?
prove that power consumed in 3 phase delta system is 3 times as compared to 3 phase star system
working principles of cf lamp,incandescentlamp and f lamp?
I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?
What are the main faults of DC generators?
sail kaott diploma ece ke interviw me qus.kis parkar ke aate hai aur G.S me kya puchate hai kya sameedyaan me kis parkar ke qu.puchate hai
hi can any body send me syllabus of rrb electrical section engg... and past pepar also of any board...
