Discussion
How is the frequency of oscillation selected out of the noise?
Answer: C
The frequency-determining network gives the right phase shift at exactly one frequency, and the gain condition is arranged to be satisfied there, so only that component of the noise grows. The amplifier's bandwidth is far wider, the transient is broadband, and the non-linearity acts on amplitude rather than selecting frequency. It is the coincidence of the two conditions that does the selecting, which is why the sharpness of the phase characteristic decides how precisely the frequency is defined.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development