why the capacitors works on ac only

Answer Posted / nishant naveen

Reactance of capacitor X = 1/(2πfc)

Since f=0, for dc frequency is zero.
So, Reactance X will be infinity for dc.

means capacitor blocks dc and allows only ac to pass

Is This Answer Correct ?    17 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

list the advantages of RCCB over other circuit breakers?

1268


WHAT IS DIFFERENCE BETWEEN MANUAL CONTROL AND MAGNETIC CONTROL AND STATE ITS ADVANTAGE /DISADVANTAGE

1580


what happened when we supply a dc current in dc motor?? can it worked properly?

1464


why do we lay up the core of a cable?

1611


WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?WHAT IS THE NEED TO BE PHASE SHIFT CHANGE BETWEEN THE PRIMARY AND SECONDARY WINDING

1340






What happens if we run alternator on under frequency? 

1646


what is high and low cut off voltage of BB and DG at SPS????????

1005


i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good

1732


What are the factors which influence the choice of specific magnetic and electric loadings of a synchronous machine?

1599


what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?

1676


how to calculate mf when meter and cTPT detail are given

1363


if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?

1360


how to calculate magnetic force genrated by a coil ?

1737


Is there any abbrevation for STUB in Stub bus protection

1494


Draw the line diagram of diffretial relay connected to transformer?

1966