Fluid Mechanics Interview Questions and Answers Civil Engineering MCQ Multiple Choice Questions. Prepare Top Interview Questions and Answers for Civil Engineering Interview Questions, Mechanical Engineering Interview Questions, Electrical Engineering Interview Questions, Online preparation tests for Engineering Students. Most Frequently Asked Fluid Mechanics Problems Quiz questions for competitive exams

Fluid Mechanics Multiple Choice Questions and Answers

1. Pascal-second is the unit of _____.

2. An ideal fluid is _____.

3. The unit of kinematic viscosity is _____.

4. If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

5. The viscosity of a gas _____.

6. Newton's law of viscosity relates _____.

7. An open tank contains 1 m deep water with a 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of the tank will be _____.

8. The position of the center of pressure on a plane surface immersed vertically in a static mass of fluid is

9. The total pressure on a plane surface inclined at an angle of 9 with the horizontal is equal to

10. A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m respectively below the free surface. The position of the center of pressure below the free surface will be at a distance of

11. Centre of buoyancy always _____.

12. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

13. Metacentric height for small values of angle of heel is the distance between the

14. A floating body is said to be in a state of stable equilibrium

15. The increase in metacentric height

16. A rectangular block 2 m long, 1 m wide, and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

17. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

18. If a vessel containing liquid moves downward with a constant acceleration equal to 'g' then

19. When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies

20. An open cubical tank of 2 m sides is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to

21. A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of the bottom is

22. The horizontal component of force on a curved surface is equal to the

23. A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then

24. The eddy viscosity for turbulent flow is

25. Flow at a constant rate through a tapering pipe is

26. In a two-dimensional incompressible steady flow around an airfoil, the streamlines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the streamlines are 1.5 cm apart, is

27. When the velocity distribution is uniform over the cross-section, the correction factor for momentum is

28. Least possible value of correction factor for

29. If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

30. If velocity is zero over l/3rd of a cross-section and is uniform over the remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is

31. The continuity equation

pi V,A,= p2V2A2 is based on the following assumption regarding the flow of fluid

32. Which of the following velocity potentials satisfies the continuity equation?

33. The motion of air mass in a tornado is a

34. In a forced vortex motion, the velocity of flow is

35. Streamlines and path lines always coincide in the case of

36. Equation of continuity is based on the principle of conservation of

37. In a steady flow of a fluid, the total acceleration of any fluid particle

38. The pitot tube is used to measure

39. Hot wire anemometer is used to measure

40. The theoretical value of the coefficient of contraction of a sharp-edged orifice is

41. Which of the following is used to measure the discharge?

42. Select the incorrect statement.

43. Size of a venturimeter is specified by

44. Due to each end contraction, the discharge of rectangular sharp-crested weir is reduced by

45. The discharge through a V- notch varies as

46. Which of the following is an incorrect statement?

47. Coefficient of velocity of venturi meter

48. The pressure at the summit of a siphon is

49. Any between two streamlines represents

50. Coefficient of velocity for Borda's mouthpiece running full is ______.

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