3.5
- 1. What is the role of SOM in failure analysis of electrical equipment?
- 2. Why is SOM important in transformer and motor design?
- 3. How do you increase beam stiffness?
- 4. What is the function of fillets and notches in design?
- 5. What is the importance of section modulus?
- 6. What is the significance of moment of inertia in design?
- 7. How does SOM apply to electrical machines?
- 8. What is limit state design?
- 9. What is allowable stress design?
- 10. Define factor of safety.
- 11. What is thermal shock?
- 12. What is stress relaxation?
- 13. How does temperature affect material strength?
- 14. What are thermal strains?
- 15. How can residual stresses be relieved?
- 16. What causes residual stresses?
- 17. What are residual stresses?
- 18. What is stress due to temperature change?
- 19. What is temperature gradient?
- 20. What are thermal stresses?
- 21. What is fracture toughness?
- 22. Define ductile fracture.
- 23. Define brittle fracture.
- 24. What is fracture?
- 25. What is S–N curve?
- 26. Define endurance limit.
- 27. What are the stages of fatigue failure?
- 28. Define fatigue.
- 29. What are the stages of creep?
- 30. Define creep.
- 31. What is bursting pressure?
- 32. What is shrink fit?
- 33. What is compound cylinder?
- 34. Define thick cylinder equation (Lame’s theorem).
- 35. What is volumetric strain in thin cylinders?
- 36. What is longitudinal stress?
- 37. What is hoop stress?
- 38. Derive hoop and longitudinal stresses in thin cylinder.
- 39. Define thick cylinder.
- 40. Define thin cylinder.
- 41. What happens when load passes outside the core?
- 42. What is eccentricity?
- 43. Define resultant stress.
- 44. What is middle third rule?
- 45. What is core of a section?
- 46. What is combined direct and bending stress?
- 47. What is combined bending and torsion?
- 48. What is bending stress due to eccentric load?
- 49. What is eccentric loading?
- 50. Define combined stress.
- 51. What is Maxwell’s reciprocal theorem?
- 52. What is complementary energy?
- 53. Define Castigliano’s theorem.
- 54. What is strain energy due to torsion?
- 55. What is strain energy due to bending?
- 56. What is strain energy due to shear?
- 57. Define modulus of resilience.
- 58. Define proof resilience.
- 59. Define resilience.
- 60. Define strain energy.
- 61. What is safety factor in failure analysis ?
- 62. What is yield criterion?
- 63. Which theory is used for brittle materials?
- 64. Which theory is most accurate for ductile materials?
- 65. What is distortion energy theory (von Mises)?
- 66. What is maximum shear stress theory (Tresca)?
- 67. What is maximum strain theory (Saint-Venant)?
- 68. What is maximum stress theory (Rankine’s)?
- 69. List the different theories of failure.
- 70. What is failure of material?
- 71. Define maximum normal stress theory.
- 72. Define maximum principal strain theory.
- 73. Define distortion energy theory.
- 74. Define maximum shear strain energy theory.
- 75. What are major and minor principal stresses?
- 76. What is Mohr’s circle?
- 77. Derive expressions for principal stresses in 2D stress system.
- 78. What is maximum shear stress?
- 79. Define principal planes.
- 80. Define principal stresses.
- 81. What is equivalent length?
- 82. Define end conditions of columns.
- 83. What is effective length of a column?
- 84. What is Rankine’s formula?
- 85. What is crippling load?
- 86. What are the assumptions in Euler’s theory?
- 87. State Euler’s formula for buckling load.
- 88. Define slenderness ratio.
- 89. What is buckling?
- 90. Define column and strut.
- 91. What is permissible deflection according to standards?
- 92. What is maximum deflection in a simply supported beam with point load?
- 93. What are boundary conditions for deflection?
- 94. What is conjugate beam method?
- 95. What is Macaulay’s method?
- 96. What is the moment area method?
- 97. Define flexural rigidity (EI).
- 98. What is slope of a beam?
- 99. What are the causes of deflection in beams?
- 100. Define deflection.