AExE01 · Chapter 1Basic Electrical & Electronics🏛️ Past Licensure QuestionID: c74d54f0
A linear signal amplifier circuit almost universally employs ________ .
A linear signal amplifier circuit almost universally employs ________ .
Multiple Choice Options
- A✓ Correct Option
Negative feedback
- B
Positive feedback
- C
No feedback
- D
Capacitive feedback
Detailed Technical Solution & Explanation
Linear audio and signal amplifiers standardly employ negative (degenerative) feedback. Negative feedback stabilizes gain against device component tolerances and temperature drift, significantly reduces non-linear harmonic distortion, increases circuit bandwidth, and modifies input/output impedances favorably.
Option Analysis:
•
Option A (Negative feedback): Correct. Standard amplifiers almost universally employ negative feedback.
•
Option B (Positive feedback): Incorrect. Positive feedback causes instability and oscillation.
•
Option C (No feedback): Incorrect. Open-loop amplifiers suffer from high distortion and thermal drift.
•
Option D (Capacitive feedback): Incorrect alone.
Reference: Mock Test 02NEC Licensure Syllabus