Hydraulic and Fluid Mechanics

21. A flow through an expanding tube at constant rate is called

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

View answer

22. A flow whose streamline is represented by a curve, is called

1. One-dimensional flow
2. Two-dimensional flow
3. Three-dimensional flow
4. Four-dimensional flow

View answer

23. A flow whose streamline is represented by a straight line, is called

1. One
2. Two
3. Three
4. Four

View answer

24. A fluid having no viscosity is known as

1. Real fluid
2. Ideal fluid
3. Newtonian fluid
4. Non-Newtonian fluid

View answer

25. A fluid in equilibrium can't sustain

1. Tensile stress
2. Compressive stress
3. Shear stress
4. Bending stress

View answer

26. A fluid is said to be ideal, if it is

1. Incompressible
2. Viscous and incompressible
3. Inviscous and compressible
4. Inviscous and incompressible

View answer

27. A fluid which obeys the Newton's law of viscosity is termed as

1. Ideal fluid
2. Real fluid
3. Newtonian fluid
4. Non-Newtonian fluid

View answer

28. A fluid whose viscosity does not change with the rate of deformation or shear strain is known as

1. Real fluid
2. Ideal fluid
3. Newtonian fluid
4. Non-Newtonian fluid

View answer

29. A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, α= Angle of contact of the liquid surface, and σ = Surface tension)

1. 4wd/σcosα
2. σ/cosα/4wd
3. 4σ cosα/wd
4. 4wd/4σcosα

View answer

30. A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

1. It is easier to see through the glass tube
2. Glass tube is cheaper than a metallic tube
3. It is not possible to conduct this experiment with any other tube
4. All of the above

View answer