Discussion
An accelerogram is digitised at 200 samples per second. The highest frequency that can be represented without aliasing is
Answer: D
Correct answer: 100 Hz
The Nyquist frequency is half the sampling rate: \[ \frac{200}{2} = 100\ \mathrm{Hz}. \] Content above it is not merely lost but folded back into the record as spurious low-frequency energy, which is why an analogue anti-aliasing filter is applied before digitising rather than afterwards.
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