Concept:In a half-wave rectifier, the diode conducts only during the positive half-cycle of the AC input and blocks the negative half-cycle.
Formula:$$ f_{output} = f_{input} \quad \text{(For HWR)} $$
Solution:- For every \( 1 \) full cycle of AC input, a half-wave rectifier produces exactly \( 1 \) output pulse.
- If the input frequency is \( 50 \text{ Hz} \) (meaning \( 50 \) full cycles per second), the output will correspondingly have \( 50 \) pulses per second.
- Therefore, the number of pulses is \( 50 \).
Why other options are incorrect:- \( 100 \): This would be the number of pulses for a Full-Wave Rectifier, where \( f_{output} = 2 \times f_{input} \).
- \( 60 \) & \( 150 \): Incorrect values not mathematically linked to a \( 50\text{Hz} \) input.
Quality & Fidelity Assurance:
Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.