Physics Electronics NUMS 2023
PMDC Verified Question 457 of 494
The conversion of alternating current into direct current is called:
A
Magnification
B
Amplification
C
Rectification
D
Resolution
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Rectification
Concept:

The foundational terminology for AC manipulation is strictly defined.

Solution:

  • When an AC wave (which oscillates above and below zero) is passed through diodes, the output is restricted to one polarity.


  • This process of "straightening out" the alternating wave into a direct, single-polarity wave is scientifically termed Rectification.


Why other options are incorrect:

  • Amplification: Boosting signal strength.


  • Magnification/Resolution: Terms for optical enhancement, totally unrelated to electronics.

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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