what is meant by dielectirc medium?
what is the dielectirc value of air and water???
Answers were Sorted based on User's Feedback
Answer / sagar hingmire
Dielctric medium means a medium which is partially a
conductor & partially a insulator.
Take example of Air as dielectric medium,up to 30 kV air is
a good insulator but beyond 30 kV air acts as a
conductor.That means dielectric value or Breakdown voltage
(BDV) of air is 30 kV.
For water as we know water is very good conductor of
electricity,Heat so water is not a dielectric but it is a
conductor.
Is This Answer Correct ? | 17 Yes | 0 No |
Answer / sidharth
Dielectrics are insulators. Only when the applied field across the medium is very high i.e. greater than the breakdown voltage of the dielectric, the dielectric breaks down, thus losing its prime property. SO, i think it cannot be called a 'partial conductor' since it is forced to conduct, not naturally.
Dielectric strength of dry air is 30kV/cm
" " " moist air is 10kV/cm
Water is a pure conductor.
Is This Answer Correct ? | 2 Yes | 0 No |
What is the Operating Powerfactor of UPS??? Why??
HOW CAN I GET 5CORE HO7 CABLE SIZE IF I HAVE 1800A?
what is numerical relay explain its operation
Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.
Now I inject 1kv DC supply r&y=??? R&Y=?? Y&B=?? B&R=???? RYB&N=??? RYBN&E=????? Minimum value====???????
How much width of the land shall have to be left below the EHT line of 440 kv as per the rule. i am told that a corridor of 35 M width is to be left free below 220 kv line. please confirm
what is the voltage present in the telephone?
In which connection the voltage will be more , in star or delta connected motor?
WHAT IS THE DIFFERNCE BETWEEN AIS AND GIS IN SWITCH GEAR?
how we will deside the high voltage value
what happens if we give 1-ph supply for 3-ph Bridge rectifier...??
why our power production in multiples of 11.