Q. In the equivalent circuit of a quartz crystal, LCR arm has an inductance of 4 mH and capacitor has a value of 4nF, then the series resonant frequency of the oscillator is:

  • (A) 0.25 mhz
  • (B) 2.5 mhz
  • (C) 25 mhz
  • (D) 5 mhz
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✅ Correct Answer: (A) 0.25 mhz
Explanation: the series resonant frequency of a crystal oscillator is given by 1/√lc. substituting the given values of l and c in the expression, the series resonant frequency is 0.25 mhz.

Published by Mr. Dubey ⭐ 109.99K Points at 13-Sep-2023 07:27 am in Antennas and Microwave Engineering

Explanation by: Mr. Dubey
the series resonant frequency of a crystal oscillator is given by 1/√lc. substituting the given values of l and c in the expression, the series resonant frequency is 0.25 mhz.

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