Discussion
Assertion (A): Lowering the back pressure of a choked nozzle raises its mass flow rate.
Reason (R): Once the throat is sonic, no pressure signal can travel upstream through it.
Select the correct answer from the options below.
Answer: B
The assertion is false and the reason is true, and the reason is precisely why. With the throat sonic, information about the back pressure cannot reach the reservoir, so conditions upstream are frozen and the mass flow is fixed by the stagnation state and the throat area alone. Only raising the stagnation pressure will pass more mass.
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