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Electronics and Communication Engineering - Communication Systems - Discussion

Discussion Forum : Communication Systems - Section 19 (Q.No. 3)
Communication Systems
3.
In a phase discriminator fc, is the IF to which primary circuit is tuned. Consider the following statements: The primary and secondary voltages are
  1. exactly 90° out of phase when input frequency is fc
  2. more than 90° out of phase when input frequency is higher than fc
  3. less than 90° out of phase when input frequency is lower than fc
Which of the above statements is correct?
1 only
1 and 2
1, 2 and 3
2 and 3
Answer: Option
Explanation:
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