Mass velocity is independent of temperature & pressure, when the flow is______________________?
Correct answer: D. Steady and the cross-section is unchanged
- A. Unsteady through unchanged cross-section
- B. Steady through changing cross-section
- C. Unsteady and the cross-section is changed
- D. Steady and the cross-section is unchanged
Explanation
For steady flow, the mass flow rate is constant, and with an unchanged area the mass velocity remains constant throughout the passage. Temperature and pressure may change, but they do not alter this mass-flow-per-area value.
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