True or False: For flowing gases the physical properties (including density) are generally

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the SAChE Source Models (ELA965) test with confidence. Access comprehensive flashcards and in-depth multiple-choice questions complete with hints and explanations. Equip yourself for success!

Multiple Choice

True or False: For flowing gases the physical properties (including density) are generally

Explanation:
In flowing gases, density is not constant. Gases are compressible, so pressure and temperature can change along the flow, and density must adjust accordingly. The relationship rho = P/(R T) (for an ideal gas) shows that as pressure and temperature vary, density changes too. Only in cases where the flow speed is very low (small Mach number) and temperature changes are negligible is density treated as approximately constant, but that’s an approximation, not the general rule. Therefore, the statement is false.

In flowing gases, density is not constant. Gases are compressible, so pressure and temperature can change along the flow, and density must adjust accordingly. The relationship rho = P/(R T) (for an ideal gas) shows that as pressure and temperature vary, density changes too. Only in cases where the flow speed is very low (small Mach number) and temperature changes are negligible is density treated as approximately constant, but that’s an approximation, not the general rule. Therefore, the statement is false.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy