Personally, AC and DC drives are quite easy to understand. DC drive is a device that uses AC as a power source to control the DC device.
Yes, ac drives are better than dc drives. You can find more info at en.wikipedia.org/wiki/Variable-frequency_drive or www.avtron.com/ac_vs_dc.htm
wheatstone's bridgeI assume you are referring to AC & DC Wheatstonebridges
DC drives are direct current motors. They are lower in cost and easier to control as compared to AC drives, which are also known as alternating current motors.
DC
in single phase inverter we use two chopper the ratio of output ac to the ratio of input dc
An amplidyne is a form of electromechanical amplifier in which an AC motor drives a DC generator.
An amplidyne is a form of electromechanical amplifier in which an AC motor drives a DC generator.
its convert to ac current to dc current
All the cell phones are working in DC only
A transformer is a device to convert high voltage AC to low voltage AC & vice-versa. It works on the principle of induction. Since induction occurs only in an AC supply, a transformer cannot work on DC.. So, it is not possible to convert DC supply to AC using transformer. You would need an inverter to convert DC to AC.
use a inverter to change dc to ac or couple it to a ac motor making it a motor generator. Comment: AC motors cannot run on DC since their principle of operation based on induction. There's an exception,however, and thats for Universal Series motor which can run on either AC or DC.
A: Very simply efficiency. DC requires rectification from AC. Which will waste this process as non working heat