Question

The cut-in point of a capacitor filter is_________

(a) The instant at which the conduction starts

(b) The instant at which the conduction stops

(c) The time after which the output is not filtered

(d) The time during which the output is perfectly filtered

I got this question in final exam.

I'm obligated to ask this question of Capacitor Filters in section Application of Diodes of Electronic Devices & Circuits

Answer 1

Right option is (a) The instant at which the conduction starts

For explanation: The capacitor charges when the diode is in ON state and discharges during the OFF state of the diode. The instant at which the conduction starts is called cut-in point. The instant at which the conduction stops is called cut-out point.