Aerospace & Aeronautical Engineering MCQ Questions Answers

1. Which of the following ratio determines the value of Taylor Number?

2. Which of the following ratio determines the value of Rayleigh Number?

3. Which of the following ratio determines the value of Peclet Number?

4. ____ ratio determines the Lewis number.

5. Which ratio determines the Fourier number?

6. Which of the following ratio indicates the Euler number?

7. Which of the following is the Weber number?

8. Which of the following parameter determines Biot number?

9. Which of the following ratio determines the Nusselt number?

10. Which of the following ration indicates Prandtle number?

11. In a tranquil flow in an open channel,

12. Which of the following ratio will give you Froude number?

13. Which of the following ratio is the Reynolds number?

14. Darcy’s Friction Factor is ____ (Where Re is the Reynolds Number) When there is a laminar flow in a smooth pipe.

15. In which case, you can apply Bernoulli’s Equation?

16. For which of the following cases, you should use Navier Stokes Equation?

17. In a pipe flow, which of the following relation is true for a laminar flow?

18. For irrotational flow, the flow equation is:

19. The continuity equation for a two dimensional flow is:

20. When the fluid properties don’t change with respect to the position at a particular time, the flow is ____.

21. When the fluid properties don’t change with respect to time, the flow is ____.

22. When Reynolds number is more than 10,000, the flow is ____.

23. When Reynolds number is less than 2000, the flow is ____.

24. In case of turbulent flow, the flow-losses are ____.

25. In case of laminar flow, the flow-losses are ____.

26. How will you come to know that the flow is laminar?

27. If the surface of a liquid is concave, the cohesion force is ____.

28. Cavitation occurred in a fluid is due to ____.

29. By which of the following instrument, you can measure specific gravity?

30. Which of the following phenomenon is responsible for the shape of the raindrop as spherical?

31. The specific gravity of fluid is 0.85. The viscosity of this fluid is 0.0085 N-Sec/m2. Its kinematic viscosity in m2/sec is ____.

32. The pressure of oil is equivalent to 40 metre of water column. Specific gravity of oil is 0.80. What is the pressure of oil in terms of metre?

33. A balloon is moving in the air. It follows the law of ____.

34. Viscosity of water is ____.

35. When the temperature of a gas rises, the viscosity ____.

36. Which of the following is defined as centre of buoyancy?

37. Comparison of viscosity is done by ____.

38. When a body is kept inside water, it will be in neutral equilibrium if ____( where, M is the metacenter and G is the center of gravity).

39. When a body is kept inside water, it will be in unstable equilibrium if ____( where, M is the metacentre and G is the centre of gravity).

40. When a body is kept inside water, it will be in stable equilibrium if ____( where, M is the metacentre and G is the centre of gravity).

41. Metacentre is the intersection of ____.

42. Which of the following statesman is not correct?

43. Which of the following law states that the intensity of pressure at any point within a static fluid is the same in all directions?

44. When ____, you will see that boiling occurs.

45. When ____, you will see that Vaporisation occurs.

46. Surface tension on a liquid jet is ____ (where d is the diameter of the droplet and σ is the surface tension.)

47. Surface tension on a hollow bubble is ____ (where d is the diameter of the droplet and σ is the surface tension.)

48. Surface tension on a liquid droplet is ____ (where d is the diameter of the droplet and σ is the surface tension.)

49. The unit of surface tension is:

50. Compressibility is the ratio of ____.

51. Bulk modulus is the ratio of ____.

52. For a compressible subsonic flow, Mach number is____.

53. For an incompressible flow, the Mach number is ____.

54. Fly ash is the example of ____.

55. Mach number is the ratio of ____.

56. Which one of the following is not a Newtonian fluid?

57. Poise is the unit of ____.

58. Which one of the following is a wrong statesman?

59. Newton’s law of viscosity is ____.

60. One stoke is equal to ____.

61. Stoke is the unit of:

62. Kinematic viscosity is the ratio of ____.

63. The unit of specific weight is:

64. Which of the following should be treated as incompressible?

65. A real fluid is considered as ____.

66. What do you think about an ideal fluid ____?

67. Which one of the following will you treat as an ideal gas?

68. Which one of the following will you treat as ideal liquid?

69. By which of the following you can measure the compressibility characteristics of a fluid?

70. What do you think about an Incompressible fluid?

71. What do you think about a Compressible fluid?

72. Which of the following substances don’t have free surfaces?

73. Fluid is a substance that ____.

74. Reduced integration elements do not permit internal stress gradients because of their single integration point and suffer from their own numerical problem known as

75. In numerical mathematics, the constant strain triangle element, also known as the ?

76. Gauss points are also the points used for numerical evaluation of _____

77. For degenerate four noded quadrilateral element the errors are _____

78. For quadrilaterals with 2X2 integration gives _____ sets of stress values.

79. The stresses in the quadratic element are not ______

80. Bayesian Quadrature is a statistical approach to the numerical problem of computing integrals and falls under the field of probabilistic numerics.

81. The interpolating function may be a straight line (an affine function, i.e. a polynomial of degree 1) passing through the points. This is called the trapezoidal rule.

82. ______________ is a historical mathematical term that means calculating area

83. The term "numerical integration" first appears in ?

84. Numerical integration comprises a broad family of algorithms for calculating the numerical value of a?

85. Numerical integration methods can generally be described as combining evaluations of the integrand to get an approximation to the integral. The integrand is evaluated at a finite set of points called?

86. The strain-stress relation for orthotropic linear elastic materials can be written in Voigt notation.

87. When an orthotropic plate is loaded parallel to its material axes, it results only _____

88. E1 value of Balsa wood is ___

89. V12 indicates the poisson’s ratio that characterises the decrease in ______ during tension applied in ______.

90. The principal material axes that are normal to the _______

91. Unidirectional fibre- reinforced composites also exhibit _______ behaviour.

92. In linear elasticity, the relation between stress and strain depend on the type of material under consideration

93. How many orthogonal symmetry planes does orthotropic material have?

94. A familiar example of an orthotropic material is?

95. Which materials are special orthotropic materials that have one axis of symmetry?

96. Using elementary row operations, a matrix can always be transformed into an upper triangular matrix.

97. Frontal method is a _______ of Gaussian elimination method that uses the structure of finite element problem.

98. A banded matrix is defined as ____________

99. Step number in Gaussian elimination is denoted as ___________

100. Gaussian elimination is a name given to a well known method of solving simultaneous equations by successively eliminating _________.