It's easy to change the voltage and with fairly small losses.
You can block AC current by using a filter with a pass-band that is outside the frequency of the AC current.
Using a portable AC duct for cooling a room offers benefits such as easy installation, flexibility to move the unit around, and cost-effectiveness compared to traditional AC systems.
No. Batteries can only produce dc current which can further be converted to AC using inverters.
AC current can be transmitted with less loss
Current filtering
Yes, the AC current can be amplified by using Step-down transformers, but one problem is the AC voltage will decrease with Step-down transformer.
Dc current can be changed to Ac current by using an undulator.Wrong!The devices that change DC to AC are:an electronic power invertera mechanical motor-generator set (only used in very high power stationary applications)an electromechanical vibrator (now obsolete)
DC current is not used in home wiring. It may be used to power a door bell, alarm system, under counter lights, etc, that uses a transformer powered by AC that converts the power to DC. Other than that homes are wired for AC current only.
Transformers that allow changing of current levels. Losses are proportional to I^2R current losses. Decreasing current decreases losses. There are other benefits depending on uses and safety, its all about Engineering.
AC current creates an alternating magnetic field, consistent with the alternating voltage. The only way I know of using AC current to create a constant magnetic field is to rectify the AC into DC and then use that DC to create the magnetic field.
No, alternating current (AC) can also be used to charge batteries using a charger that converts AC to DC. The charger will convert the AC power from the outlet to DC power that is suitable for charging the battery.
you can measure ac using a cathode ray oscilloscope. it will project a sinusodial waveform, showing that the current is in the positive direction in the first half and the opposite direction in the second half