Topic: Analog Circuits
For various types of oscillators, the correct statement is
- A. LC oscillators are more stable than crystal oscillators
- B. Crystal oscillators have highest Q
- C. Phase-shift oscillators have the widest range of frequency
- D. Wien bridge oscillator is used where a single frequency oscillator is required
Answer: B. Crystal oscillators have highest Q
Explanation: Advantage of crystal oscillator: (i) It is one of the most stable oscillator. (ii) High Q-factor of the range of $10^{4}$ to $10^{6}$ compared to $10^{2}$ for LC oscillator. (iii) No ageing effect. Phase shift oscillator is used in audio range frequency.