Course Assessment — Comprehensive Two-Phase Flow Analysis

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Question 1 of 12

1. Question
What is the drift velocity in two-phase flow analysis?
- The component velocity minus the average velocity
- The component velocity plus the average velocity
- The average velocity minus the component velocity
- The average velocity plus the component velocity
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Question 2 of 12

2. Question
What is the relationship between volumetric flux and local component concentration?
- Directly proportional
- Inversely proportional
- No relationship
- Complex relationship
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Question 3 of 12

3. Question
What does the homogeneous flow theory imply about the slip velocity between the two phases?
- It is high
- It is negligible
- It is moderate
- It is variable
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Question 4 of 12

4. Question
In which situation is the homogeneous flow model not applicable?
- Dispersed bubbly flow
- Rapid acceleration
- Slow acceleration
- Steady flow
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Question 5 of 12

5. Question
What factors make the homogeneous flow model inapplicable? (Select the two correct answers)
- Rapid acceleration
- Counter current flows
- Slow acceleration
- Steady flow
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Question 6 of 12

6. Question
What terms make up the pressure gradient expression? (Select the three correct answers)
- Frictional pressure gradient
- Gravitational pressure gradient
- Acceleration pressure gradient
- Thermal pressure gradient
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Question 7 of 12

7. Question
How is compressibility defined?
- The measure of the change in volume of a substance under the action of normal compressive stresses
- The measure of the change in pressure of a substance under the action of normal compressive stresses
- The measure of the change in temperature of a substance under the action of normal compressive stresses
- The measure of the change in density of a substance under the action of normal compressive stresses
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Question 8 of 12

8. Question
What are the key parameters that characterize the degree of compressibility of a substance? (Select the two correct answers)
- Bulk modulus of elasticity
- Coefficient of compressibility
- Speed of sound
- Speed of light
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Question 9 of 12

9. Question
What are the reference conditions in compressible flows? (Select the two correct answers)
- Stagnation properties
- Sonic properties
- Isentropic properties
- Adiabatic properties
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Question 10 of 12

10. Question
What remains constant for an adiabatic isentropic situation according to the energy equation?
- The enthalpy heat and the kinetic energy heat
- The pressure and the temperature
- The volume and the velocity
- The area and the altitude
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Question 11 of 12

11. Question
When is the choked flow condition achieved?
- When the Mach number equals zero
- When the Mach number equals one
- When the Mach number equals two
- When the Mach number equals three
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Question 12 of 12

12. Question
For what void fraction is the maximum acoustic velocity for two-phase homogeneous flow obtained?
- 0.25
- 0.5
- 0.75
- 1.0
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Comprehensive Two-Phase Flow Analysis

Course Assessment — Comprehensive Two-Phase Flow Analysis

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