AExE01 · Chapter 1Basic Electrical & Electronics🏛️ Past Licensure QuestionID: 2edf757b
What is the output waveform frequency of a full-wave bridge rectifier for a 50 Hz AC input?
What is the output waveform frequency of a full-wave bridge rectifier for a 50 Hz AC input?
Multiple Choice Options
- A
50 Hz DC
- B✓ Correct Option
100 Hz pulsating DC
- C
25 Hz AC
- D
Pure 50 Hz DC
Detailed Technical Solution & Explanation
A full-wave bridge rectifier conducts during both the positive and negative half-cycles of the AC input. Consequently, each input cycle of 50 Hz produces two output pulses, resulting in a ripple frequency of pulsating DC.
Option Analysis:
•
Option A (50 Hz DC): Incorrect. 50 Hz output ripple occurs only in half-wave rectifiers.
•
Option B (100 Hz pulsating DC): Correct. Full-wave rectification doubles the frequency to 100 Hz pulsating DC.
•
Option C (25 Hz AC): Incorrect. Rectifiers produce DC, not lower frequency AC.
•
Option D (Pure 50 Hz DC): Incorrect. Rectification produces pulsating DC; filtering is required to obtain pure steady DC.
Reference: Demo2 · Set 1NEC Licensure Syllabus