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(C) The given circuit is a bridge rectifier configuration. When an alternating voltage is applied across terminals $A$ and $C$,the diodes are arranged

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Full wave rectifier

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(C) The given circuit is a bridge rectifier configuration. When an alternating voltage is applied across terminals $A$ and $C$,the diodes are arranged such that current flows through the load connected across $B$ and $D$ during both the positive and negative half-cycles of the input $AC$ signal. Specifically,during the positive half-cycle,two diodes conduct,and during the negative half-cycle,the other two diodes conduct,ensuring that the current through the load remains in the same direction. Therefore,this circuit acts as a full wave rectifier.

In the diagram,the input is across the terminals $A$ and $C$ and the output is across the terminals $B$ and $D$,then the output is

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