Question:
The problem of reducing the gain of receiver for weak signals is avoided by
The problem of reducing the gain of receiver for weak signals is avoided by
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Delayed AGC improves weak-signal reception because gain reduction begins only after a preset signal level is reached.
Updated On: Jun 25, 2026
- No AGC
- Ideal AGC
- Simple AGC
- Delayed AGC
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The Correct Option is D
Solution and Explanation
Concept:
AGC (Automatic Gain Control) is used to maintain approximately constant output despite variations in input signal strength.
Step 1: Problem with simple AGC.
Simple AGC begins reducing gain even for weak signals. This may deteriorate receiver sensitivity.
Step 2: Use delayed AGC.
Delayed AGC starts operating only after the signal exceeds a specified threshold. Weak signals therefore experience full receiver gain.
Step 3: Final Answer.
Hence, \[ \boxed{\text{Delayed AGC}} \] is used. \[ \boxed{\text{Correct Option (D)}} \]
Step 1: Problem with simple AGC.
Simple AGC begins reducing gain even for weak signals. This may deteriorate receiver sensitivity.
Step 2: Use delayed AGC.
Delayed AGC starts operating only after the signal exceeds a specified threshold. Weak signals therefore experience full receiver gain.
Step 3: Final Answer.
Hence, \[ \boxed{\text{Delayed AGC}} \] is used. \[ \boxed{\text{Correct Option (D)}} \]
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