If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling?
Correct answer: A. Loose
- A. Loose
- B. Tight
- C. Critical
- D. None of the above
Explanation
Loose coupling gives a narrower resonance curve and therefore better selectivity. Tight coupling increases bandwidth, while critical coupling is selected when a particular compromise between gain and bandwidth is required.
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