AC alternates - so the current naturally passes through zero twice very cycle. Interruption in an AC Circuit breaker takes place at one of those natural current zeros.
There is arcing during the course of interruption - dielectric strength builds up gradually as the breaker contacts physically open, and until the contacts have opened sufficiently, conduction will re-establish after the initial currents zeros. But once the contacts are open sufficiently to provide enough dielectric strength, the arc will be extinguished. The breaker mechanism may include provides to accelerate arc extinction - typical scheme include arrangements that extend and cool the arc.
DC does not alternate, so there are no natural current zeros. That implies two things. First, the physical opening of the breaker must be faster and physically greater to create sufficient dielectric withstand to extinguish the arc. That is usually what is done with smaller breaker.
But for breakers with larger electrical ratings, it may be necessary to include a provision to force an artificial current zero. One approach is to include a capacitor that is charged by the normal DC voltage, and that is inserted into the circuit as the breaker opens to oppose the normal voltage to force the current to zero.
The fuse wire is the same size for both fuses. A DC fuse has to be made larger to withstand a possible arc that lasts longer than it does with AC where the current usually stops in the first half-cycle after the fault.
Usually ac fuses are made smaller because the current stops twice in every cycle, so any arcing that occurs will blow out in that short time. DC fuses are more carefully made so that when they blow, any resulting arc does no damage.
Fuses are rated as to their voltage and amps and of course the physical size of the fuse is important. Never use a fuse for an application that it isn't rated for.
Like AC, DC can be at any voltage.
As happens with voltage and current, flux is steady for dc but keeps altering for ac. A transformer works through the ac flux in the magnetic core.
You cant.
With an AC and a DC voltage source in series, the DC voltage can be added to the RMS value of the AC voltage to give the effective voltage.
Converter is AC to DC. Inverter is DC to AC
Like AC, DC can be at any voltage.
As happens with voltage and current, flux is steady for dc but keeps altering for ac. A transformer works through the ac flux in the magnetic core.
How do you convert 23 voltage DC to 230 Voltage AC?
The voltage source that is applied to them is the difference between AC and DC light bulbs.
A transformer changes the VOLTAGE of AC current (AC to AC). A rectifier changes AC to DC.
An AC transformer works by changing the magnetic field going through a coil. The change is unavailable in the case of DC. It is possible to convert DC to AC (with an inverter) and then change the AC voltage to another value and rectify it to get DC at a different voltage.
You cant.
AC !
megger are available in ac &dc
With an AC and a DC voltage source in series, the DC voltage can be added to the RMS value of the AC voltage to give the effective voltage.
no, dc volatage is a type of current direct current, ac is alternating current, average voltage could be any type of voltage ac or dc that maintains a constant rangeAnswerNo. A DC voltage is exactly equivalent to an AC rms-voltage. So, for example, 100 V (DC) is exactly equivalent to 100 V (AC rms). The average value of an AC waveform is zero.
There's no correlation between the voltage, the current, and whether the source is AC or DC.