When you are giving DC supply to rectifier what will happen?

When DC supply is given to a rectifier, it essentially becomes ineffective because rectifiers are designed to convert alternating current (AC) to direct current (DC). If a rectifier is supplied with DC, it does not perform any significant function, as there are no alternating voltage cycles to rectify. In some cases, the rectifier may simply pass the DC through without any alteration, or it could potentially conduct in one direction, depending on the configuration. Overall, the rectifier will not provide any of its intended benefits in this scenario.