what is the frequency of direct current(dc)?
Answers were Sorted based on User's Feedback
Answer / isda
The dc current which come direct from battery , cells is
Usually be steady current and freq zero
but the dc current which come from convert ac current is
always has ripple depend on the capacitance which use in the
bridge so this dc current may be has very small frequency
|Is This Answer Correct ?||58 Yes||14 No|
Answer / akash yadav
|Is This Answer Correct ?||49 Yes||13 No|
Frequency is the reciprocal of time period. Time period is
one which gives the information of quantity varying with
respect to time. In DC current the quantity doesn't varies
with time, where as in AC systems it varies from positive
max to negative max. Hence DC current do not have any frequency.
|Is This Answer Correct ?||29 Yes||4 No|
Answer / tushar panda
|Is This Answer Correct ?||24 Yes||5 No|
Answer / sand
direct current(pure) does not change with time, so we can't
define a particular value of time period for the d.c quantity.
(That is, it does not change up to infinite amount of time)
As we know that frequency is the reciprocal of time period,
frequency of d.c will be ( 1/ infinite ) = 0
|Is This Answer Correct ?||17 Yes||2 No|
Answer / velu5185
DC SUPPLY HAS NO FREQUENCY
|Is This Answer Correct ?||14 Yes||1 No|
Answer / siva sai krishna marthy
dc supply has infinite time period and zero frequency
|Is This Answer Correct ?||8 Yes||1 No|
Answer / rez
If a vsd has an AC input please explain what the 'pot ' is
doing to the voltage and input freq as the resistance
increases and decreases . what happens to the frequency. and
yes i agree dc has no freq .
|Is This Answer Correct ?||5 Yes||2 No|
Answer / amina
Frequency,as regards voltage, is the term applied to changes in voltage per unit time.As the voltage in DC does not changes,as it changes in AC periodically. Hence, DC has zero Hurtz frequency....
|Is This Answer Correct ?||2 Yes||0 No|
Answer / p sateesh
dc power is unidirectional in nature irrespective of timeperiod bcz of there z no alternation as well as f is inverse propotion of time period
|Is This Answer Correct ?||1 Yes||1 No|
What is the function of PMG in DG sets & how it works??????????
How to calculate 5hp 415v 3phase 2800rpm Ac motor full load current with out tourgh
why star connected transformers used in tneb?
with out colour codeing on conductor how can be find what is r,what is b,what is y phases.....
why most of the substations are rated in multiples of 11?
how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.
what happens if DC earthing and AC earthings are shorted?
What can a fresh(without experience) electrical engineer contribute to NTPC( Or any PSU company) growth?
how to find the voltage's of a transmission line plzz help with pictures i am not able to understand
what are the applications of TIG welding
If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?
Derive the inductance of a coil in terms of its physical factors.