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IT IS RELATED TO AC ONLY BKZ SKIN EFFECT DEPENDS FREQUENCY ONLY WHERE IS IN DC NO FREQUENCY

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Q: Skin effect related to ac and DC?
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Why skin effect for a conductor is not applicable for DC?

As we know that skin effect occures in ac system.skin effect dependes on frequncy.In case of dc syastem frequncy is zero.So skin effect for conductor is not applicable for dc.


What is the difference between ac Hall effect and dc Hall effect?

The AC Hall effect is used to measure the sign and magnitude of an alternating magnetic field, whereas the DC Hall effect is used to measure the sign and magnitude of a steady magnetic field. In AC Hall effect, the magnetic field changes direction periodically, while in DC Hall effect, the magnetic field is constant.


Why less loss occurs when you use DC supply than AC supply?

There are less loss occurs when we use DC supply than AC supply, because the frequency is zero in DC, so no Inductance & Capacitance exists.And there is no skin effect in the DC systems, so there is low resistance as compared to AC systems.Rac = 1.25*Rdcfrom Arun Kumar SRR


What is the difference between DC and AC resistance?

AC resistance should NOT be confused with IMPEDANCE or REACTANCE.When AC flows through a conductor, it tends to flow towards the surface of that conductor due to a phenomenon called the 'skin effect'. The skin effect, therefore, acts to reduce the effective cross-sectional area of the conductor. Since resistance is inversely-proportional to cross-sectional area, the result is an elevated value of resistance compared with that to DC current. This is called AC RESISTANCE, and it increases with frequency. At mains frequencies (50/60 Hz), AC resistance is not dramatically higher than DC resistance but the difference becomes significant at high frequencies.Read more in the Related link shown below this answer.


What is the difference between a voltage converter and a voltage inverter?

Converter is AC to DC. Inverter is DC to AC


What are the advantages of AC power over DC power?

The only advantage I can think of off the top of my head would be a reduction of noise and a reduction of danger. DC will not interfere with wireless devices or create that annoying hum in sound devices and is far less lethal than AC current.Disadvantages: You will take a major loss in power when converting AC to DC, and a further hit to convert it back to AC. DC current also will not travel as far as AC current over long distances.Another answerDC does not experience 'skin effect' that is inherent in AC (in AC, the current runs predominantly on the outside - or 'skin' - of the wire and not in the interior), meaning that for the same sized wire and same voltage, DC loses less energy per distance than AC does.DC does not experience the electromagnetic inductance losses (or cause the electromagnetic interference) that AC power does since the voltage does not change over time. These losses can be minimized in AC by minimizing the frequency, but never completely eliminated.Given the same high tension power line setup, and even disregarding skin effect, DC can be run at higher voltage due to having steady voltage instead of a peak voltage that is ~1.4 times higher than the RMS voltage, as is the case with AC. For example, 500,000VAC (RMS) actually has a peak value of over 700,000volts.For more information please view both the Related Linkand the answer to the Related Question shown below.


Why ac instead of dc?

ac transmission are used because we easily step up the voltage as per our requirment and also breaker used for ac break the ac current easily bcs of nature of zero current at every cycle but for long distance transmission done by dc due to reducing the skin effect and also reduce the relative inductance of the line due to this the line losses are reduce and we transmit the more power.


What is the formula to calculate AC resistance if the DC resistance is known?

AC resistance is the term used to describe the elevated value of resistance due to the reduction in a conductor's effective cross-sectional area due to the the skin effect caused by an alternating current. The skin effect describes how AC current tends to flow towards the surface of a conductor, rather than being distributed across the entire cross-sectional area as is the case for a DC current.For 50/60 Hz supplies the skin effect is not great and, so, there will not be a great difference between the DC resistance and AC resistance of a winding. Accordingly, it will be very difficult to calculate the winding's AC resistance, as its value is likely to be masked by experimental error and the accuracy of the instruments.In theory, by using a wattmeter and an ammeter, the resistance of a load -in this case a winding- the readings can be inserted into the equation: R = P/I2. Using a DC supply will reveal the (DC) resistance value, and using an AC supply will reveal the AC resistance value. As explained, a combination of experimental error and instrument accuracy is very likely to mask any actual difference between the two resulting values.So, at mains' frequencies, the difference between AC resistance and actual (DC) resistance would be very difficult to determine with any degree of accuracy.


What will happen to the output ac signal if the dc level is insufficient?

What will happen to the output ac signal if the dc level is insufficient? Sketch the effect on the waveform.


Is there any possibilty of ac and DC flows in conductor at a time and get DC and AC with two reference AC and DC?

A typical AC waveform is symmetrical about a zero crossing point. You can bias the AC with DC such that the AC waveform is symmetrical about the DC voltage.


Ac to DC formula?

formula for ac to dc


Which is more dangerous AC or DC supply?

A: DEFINITELY DC since current is steady at whatever voltage while AC must have a less voltage as is supplied. Also at hi frequency the AC will the tendency to flow on the skin as opposed to flow internally