why the capacitors works on ac only

Answers were Sorted based on User's Feedback



why the capacitors works on ac only..

Answer / bala

generally capacitor gives infinite resistance to dc
components(i.e., block the dc components). it allows the ac
components to pass through.

Is This Answer Correct ?    33 Yes 2 No

why the capacitors works on ac only..

Answer / 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

why the capacitors works on ac only..

Answer / yuvi

Both capacitors and inductors are reactive components and
can be used only with AC circuits.

Is This Answer Correct ?    11 Yes 4 No

why the capacitors works on ac only..

Answer / rakesh

Only high frequency
allowed to pass
through the capacitor,
& dc supply has
0(zero) frequency due
to this reason
capacitor work on only
ac.

Is This Answer Correct ?    9 Yes 2 No

why the capacitors works on ac only..

Answer / krunal devi

for a capacitor in case of DC source applied over it first half of its period it goes on charging but it is not getting time for discharge because for DC source the current is constant . That's why it is working as break in dc circuit.

Is This Answer Correct ?    3 Yes 1 No

Post New Answer

More Electrical Engineering Interview Questions

how to read AWG n how to convert AWG reading into mm?

1 Answers  


What is application of MCB & How it works

1 Answers   TATA,


why CFL lamp requires less electricity than a normal lamp?/

3 Answers  


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

0 Answers   TCS,


What is the role of link in neutral in a three phase ac system?

10 Answers  






What is the permissible value of earth resistance!

11 Answers   Torrent Power,


pls send previous bhel electrical papers

0 Answers   Siemens,


Why dnt we generate 5-ph or 7-ph supply like as 3-ph supply

2 Answers  


sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

0 Answers   IOCL,


why voltage is low at reciving end in summer??

4 Answers   JSW,


how the earthing point or earthing is taken for ships and airplanes?

1 Answers  


What is Procedure the procedure to select CT's & PT's in 66kV and above substation?

3 Answers   Infotech, Vijai Electricals,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)