Discussion
The leading Mach line of an expansion fan in a stream at \( M_1 = 2 \) lies at what angle to the oncoming flow?
Answer: B
The leading characteristic is a Mach wave in the undisturbed flow, so it lies at the upstream Mach angle \( \arcsin(1/2) = 30 \) degrees. The distractor 19.5 degrees is the Mach angle at Mach 3, which would bound the fan if the flow were expanded to that speed.
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