Physics Electronics NUMS 2023
PMDC Verified Question 456 of 494
A device that converts AC into DC is called:
A
Transistor
B
Inductor
C
Capacitor
D
Diode
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Diode
Concept:

Rectification depends on unilateral conductivity.

Solution:

  • The core element in power electronics used to convert Alternating Current (AC) into Direct Current (DC) is the diode.


  • It performs this by providing near-zero resistance to forward current and near-infinite resistance to reverse current.


Why other options are incorrect:

  • Transistor: Used for amplification.


  • Capacitor/Inductor: Used for energy storage and filtering, but not the primary rectifying agents.

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.

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