difference between ac and dc
Answers were Sorted based on User's Feedback
Answer / nandhini
AC- alternative current, current flows in both the direction
and it is used in home,industry power supplies.
DC-direct current, current flows in only one direction and
it is used in small batteries and toys.
Is This Answer Correct ? | 45 Yes | 9 No |
Answer / alfrad nobel
alternate current(AC) having frequency(no of cycles per second),direct current(DC) have no frequency.
Is This Answer Correct ? | 34 Yes | 0 No |
Answer / mani bhushan
1>AC current have period.
DC current have no period.
2>AC current have certain frequency.
DC current have 0 frequency.
3>Generation of AC current is easy.
Generation of DC current is not easy.
Is This Answer Correct ? | 9 Yes | 2 No |
Answer / electrokarz
* AC can be stepped-up or stepped down efficiently using
transformers where as DC cannot be stepped up or down
efficiently ( the losses in DC-DC buck/boost choppers are
quite high)
* Skin effect is observed in AC transmission systems but not
in DC.
* The need of brushes and commutators makes DC generators
expensive and needs regular maintenance where as AC machines
(generators and motors) are cheap and needs less or no
maintenance.
* Synchronization with system frequency is needed in AC systems.
Is This Answer Correct ? | 6 Yes | 0 No |
Answer / sree ranga prasad
AC(ALTERNATIVE CURRENT)
-IN AC MAGNITUDE IS VARYING
-AC HAVING FINUTE TIME PERIOD
-AC TERMINALS REPRSENTED BY PHASE AND NEWTRAL
-IN AC SINGLE PHASE AND THREE PHASE AVALIBLE
-IT HAS SOME FREQENCY
DC(DIRECT CURRENT)
-IN DC MAGNITUDE IS CONSTANT
-HERE TIME PERIOD IS INFINITY
-HERE FREQENCY IS ZERO
-TERMINALS ARE REPRSENTED BY +,-
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / ajit yadav
ac is alternate current in this the signal is continuous
with time in any frequency range
a complete cycle is a frequency means positive and negative
cycle
Is This Answer Correct ? | 6 Yes | 4 No |
Answer / himanshu rana
AC can not be stored but DC can be stored in batteries.
Is This Answer Correct ? | 5 Yes | 4 No |
Answer / prabhakar reddy
AC IS IN CONTINIUES BUT DC ISIN DISCRETE FORM
Is This Answer Correct ? | 2 Yes | 12 No |
What is the relation between current and voltage?
can i give the short discription to "window size" , "Time out" "piggybacking" in sliding window flow control.
Define what is tunnel diode?
what is the difference b/w different types of BTS like MICRO,MACRO.etc
WHICH TYPES OF QUESTION & WHICH BEST BOOK IN PREPARING FOR COMMUNICATION ?
ripple factor of half bridge rectifier???
Explain what are the two mechanisms of breakdown in a p-n junction?
Explain the construction of a jfet
IS THIS POSSIBLE TO VARY THE POWER BY VARYING THE FREQUENCY IN TANNER EDA TOOL..
i want syllabus for section engnieer and previous year question papers
what is the diff between UPS and Inverter
What is pin diode?