27. A block of weight 20kN just begins to move along a horizontal surface on application of 5kN
horizontal force. The coefficient of friction between block and surface is :
മ 0 (0) 0.20
൫ 025 യ) 0.50
28. ന of the following is an incorrect agsumption in the analysis of truss?
(മ All joints are pinned
(B) Loads applied at joints only
(C) All members are straight
(D) Weights of members are acting at their centres
29. During strain hardening :
(ಗ) Material undergoes changes in atomic and crystalline structures
(൫) Increased resistance ‏ما‎ further deformation
(C) Stress strain diagram has positive slope
(D) All the above
30, Ability of a material to absorb energy within the elastic range :
(ക) Toughness (B) Elasticity
(ര Stiffness (D) : 86811161300
31. A cantilever beam fixed at left end carries a udl w / unit length over the left half portion and
a point load W at the free end. If L is the length of the beam, the bending moment at fixed
018 :
(4) ೫1/2. ೪13/4 இ உஙக
(© wL+WLY8 று 71+ 1/8
32. A beam ABC, is simply supported at A and B and BC is overhanging. AB =L and BC = L/2
and it carries ೩ point load P at C. The deflection at Cis :
(A) 1۵/241 © 1
(© 1 त) மாண
33. The Poisson's ratio of a material is 0.3 and Young's modulus is 200 GPa. Its Rigidity Modulus
18:
(ಸ). 7768೩ (2) 51GPa
)© 1250௨ (D) 333 6۰
5 6 A