The AC ripples can be reduced in a rectifier circuit by using capacitive filter by _________ the capacitance value and by ________ the input frequency.

Correct option is B

$$\bullet \; \text{The ripple factor } (\gamma) \text{ for a full-wave rectifier using a capacitor filter is given by:} \\[6pt]\gamma = \frac{1}{4\sqrt{3} R_L C f} \\[8pt]\text{Where:} \\[4pt]\bullet \; C = \text{capacitance} \\[4pt]\bullet \; f = \text{input frequency} \\[4pt]\bullet \; R_L = \text{load resistance} \\[8pt]\text{To reduce the AC ripples, the capacitance should be increased and the input frequency should also be increased.} \\[4pt]\text{This is because the ripple factor } (\gamma) \text{ is inversely proportional to both the capacitance and the frequency.} \\[4pt]\text{As the capacitance } C \text{ increases and the frequency } f \text{ increases, the ripple factor decreases, thus reducing the AC ripples.}$$​​