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

Answer / akash yadav

zero

Answer / venkatesh vaidya

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.

Answer / tushar panda

zero

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

Answer / velu5185

DC SUPPLY HAS NO FREQUENCY

Answer / siva sai krishna marthy

dc supply has infinite time period and zero frequency

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 .

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....

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

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