Hydraulic and Fluid Mechanics

11. A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called

1. Steady flow
2. Uniform flow
3. Streamline flow
4. Turbulent flow

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12. A flow in which the quantity of liquid flowing per second is constant, is called

1. Steady
2. Streamline
3. Turbulent
4. Unsteady

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13. A flow in which the quantity of liquid flowing per second is not constant, is called

1. Streamline flow
2. Turbulent flow
3. Steady flow
4. Unsteady flow

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14. A flow in which the viscosity of fluid is dominating over the inertia force is called

1. Steady flow
2. Unsteady flow
3. Laminar flow
4. Turbulent flow

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15. A flow in which the volume of a fluid and its density does not change during the flow is called

1. Incompressible
2. Compressible
3. Viscous
4. None of these

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16. A flow is called hyper-sonic, if the Mach number is

1. Unity
2. Less than unity
3. Between 1 and 6
4. None of these

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17. A flow is called sub-sonic, if the Mach number is

1. Less than unity
2. Unity
3. Between 1 and 6
4. More than 6

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18. A flow is called super-sonic if the

1. Discharge is difficult to measure
2. Velocity of flow is very high
3. Mach number is between 1 and 6
4. None of these

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19. A flow through a long pipe at constant rate is called

1. Steady uniform flow
2. Steady non-uniform flow
3. Unsteady uniform flow
4. Unsteady non-uniform flow

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20. A flow through a long pipe at decreasing rate is called

1. Steady
2. Unsteady
3. Both A and B
4. None of these

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