Physics Electronics DUHS 2023
PMDC Verified Question 455 of 494
A semi-conductor diode can be used as:
A
A transmitter
B
An amplifier
C
A full wave rectifier
D
A half wave rectifier
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: A half wave rectifier
Concept:

A single diode blocks one polarity of current and permits the other.

Solution:

  • Because a single diode can only conduct during one half of an AC cycle (either positive or negative depending on orientation), it effectively chops off half the wave.


  • Therefore, a single semiconductor diode acts purely as a half wave rectifier.


  • A full wave rectifier strictly requires a minimum of two diodes (with a center tap) or four diodes (bridge).


Why other options are incorrect:

  • Full wave rectifier: Requires multiple diodes.


  • Amplifier: Requires a transistor (active device with gain).


  • Transmitter: Requires complex oscillator and antenna circuits.

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.

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.