In this article we are going to discuss about the difference between AC and DC power. Both of electrical power,AC means alternating current and DC means direct current. there are some difference between them.
difference between ac and dc power
AC(Alternating current)
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DC (Direct current)
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1. In case AC power , the
electron flow constantly in both direction or switching direction sometimes
going backward, and sometime going “forward”.
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In DC power , the electron flow constantly in single direction , or forward direction
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2. Alternating current is more
best for transmit electricity over large distance
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Direct current is less use to transmit electricity over large
distance
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3. In case of extra high voltage transmission AC is more efficient
than DC.
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DC power is less efficient to transmits extra high voltage
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4. The frequency of Alternating current is 50 to 60HZ. In India 50HZ
frequency used.
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The frequency of direct current is 0HZ.it DC has not frequency.
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5. Alternating current can be
flow both forward and backward direction.
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Direct current can flow only one direction or forward direction.
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6. Alternating current power factor
always lies between 0 to 1.
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Direct current power factor always being unity
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7. In AC power ,voltage and current does not lies in same phase which
mean voltage and current lies in different phase,
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In case of DC power, voltage and current lies in same phase which
cause its power factor is always being unity,
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8. In AC different parameter lies as resistance, capacitance,
inductance, Impedance.
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In DC only one parameter lies
which is Resistance.
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9. It can reverse its current
direction according requirement
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9. It cannot reverse its direction
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10. Its (current) magnitude varies with respect to time. dI/dT
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Its magnitude is always constant
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11. It is efficient for linger distance to provide more power
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It is not efficient for longer
distance
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12. AC curve is sinusoidal
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DC curve is state line
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13. It required less dangerous
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It required more dangerous
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14. AC power can be easily step up and step down in power
transmission by use of transformer
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DC power cannot be easily step up and step down it required to
convert dc into ac power.
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15. In AC power transmission being corona losses and voltage drop and
other type power loss.
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In case of DC power these type
losses is negligible
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16. AC power can be covert
into DC power by using of bridge rectifier
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DC power can be convert into AC power by using of invert er.
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