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Engineering Mechanics - Interview Questions and Answers

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26. 40. A framed structure is perfect if it contains members equal to
A. 2n-3
B. n-l
C. '2n-l
D. n - 2
E. 3n-2.
Explanation:
27. 53. A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve
A. catenary
B. parabola
C. hyperbola
D. elliptical
E. circular arc.
Explanation:
28. 52. The possible loading in various members of framed structures are
A. compression or tension
B. buckling or shear
C. shear or tension
D. all of the above
E. bending.
Explanation:
29. 31. According to law of triangle of forces
A. three forces acting at a point will be in equilibrium
B. three forces acting at a point can be represented by a triangle, each side being proportional to force
C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equi�librium
D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
E. none of the above.
Explanation:
30. 44. The centre of gravity of a uniform lamina lies at
A. the centre of heavy portion
B. the bottom surface
C. the mid point of its axis
D. all of the above
E. none of the above.
Explanation:
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