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What is meant by DC current

The term direct current (DC) supply is given to a supply source that makes current to flow  through a circuit in one direction only.        Batteries and some types of generators give DC supply of constant voltage.    ## DC supply is not distributed by electric supply agencies in India.      A dvantage of DC supply         1) D.C is better for electric arc-welding.      2) D.C is essential for electroplating.      3) D.C is essential for the operation of various electronic equipment .  
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What are the types of filter circuits

FILTER CIRCUIT FILTER               Filter is an electronic circuit. Filter circuit is very useful electronic device which can filter pulse of frequency. Filter circuit can stop or pass particular band of frequency. TYPES OF FILTER CIRCUIT               1)Low pass filter circuit.               2)High pass filter circuit.               3)Band pass filter circuit.               4)Band stop filter circuit. 1)LOW PASS FILTER CIRCUIT Low pass filter circuit                                                       This filter circuit allow only low frequency and which reject above the all cut-off frequencies its called low pass filter. NAME OF THE COMPONENTS WHI...
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How do you calculate RL in a circuit

  RL CIRCUIT      RL means Resistor and Inductor . RL circuit mainly two type          1)RL series circuit.          2)RL parallel circuit. 1)    RL SERIES CIRCUIT RL series circuit  Power factor is lagging . Series circuit have current constant. Series circuit have always voltage  calculated. IMPEDANCE OF RL  SERIES  CIRCUIT            Z=√R 2 +X L 2 VOLTAGE OF RL  SERIES  CIRCUIT              V= √V R 2 +V L 2 CURRENT OF RL SERIES CIRCUIT            I=V/Z POWER FACTOR OF RL SERIES CIRCUIT              P.F=V R /V 2)      RL PARALLEL CIRCUIT    RL parallel circuit Parallel circuit have always voltage constant  Parallel circuit have always current calculated  CURRENT CALCULATED BY RL PARALLEL CIRC...
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