Discussion
A stack of \( 60 \) m physical height has a plume rise of \( 45 \) m. Its effective height is
Answer: D
Correct answer: 105 m
The effective stack height is the physical height plus the plume rise:
\[ H = h_s + \Delta h = 60 + 45 = 105\ \text{m} \]
The plume rise is a real gain in dispersion, not a correction to be subtracted: buoyancy and exit momentum carry the plume \( 45 \) m above the stack top before it levels off, and it is from \( 105 \) m that it then travels downwind. Since maximum ground level concentration falls roughly as \( 1/H^2 \), that extra \( 45 \) m matters a great deal.
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