To measure radio frequency, the suitable frequency meter is_______________?
Correct answer: C. heterodoxy frequency meter
- A. Weston frequency meter
- B. reed vibrator frequency meter
- C. heterodoxy frequency meter
- D. electrical resonance frequency meter
Explanation
A heterodyne frequency meter uses a local oscillator and beat-frequency principle, making it suitable for measuring radio frequencies. “Heterodoxy” is evidently a spelling error for heterodyne.
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