MCQ
21. The strain energy due to volumetric strain--
Is directly proportional to the volume
Is directly proportional to the square of exerted pressure
Is inversely proportional to Bulk modulus
All the above
22. The greatest load which a spring can carry without getting permanently distorted, is called--
Stiffness
Proof resilience
Proof stress
Proof load
23. The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called-
Stiffness
Proof resilience
Proof stress
Proof load
24. A wall constructed to resist the leteral pressure of an earth filling is called -
Boundary wall
Vertical wall
Shear wall
Retaining wall
25. If a solid shaft (diameter 20 cm, length 400 cm, N 0.8105 N/mm2) when subjected to a twisting moment, produces maximum shear stress of 50 N/mm2, the angle of twist in radians, is--
0.001
0.002
0.0025
0.003
26. The ratio of maximum and average shear stresses on a rectangular section, is--
1
1.25
1.5
2.5
27. The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span 1 and rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance
1/4
h/4
1
2
28. ml and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if
m=ml+m2
m=ml+m2+1
m=ml+m2+2
m=ml+m2+3
29. To determine the force in BD of the truss shown in the given figure a section is passed through BD, CD and CE, and the moments are taken about --
A joint
B joint
C joint
D joint
30. A simply supported uniform rectangular bar breadth b, depth d and length L carries an isolated load W at its mid-span. The same bar experiences an extension e under same tensile load. The ratio of the maximum deflection to the elongation, is--
L
1/L/2d
(L/2d)
(L/3d)
31. The force in AC of the truss shown in the given figure, is--
5t tension
4t tension
5t compression
4t compression
32. The ratio of lateral strain to axial strain of a homogeneous material, is known --
Yield ratio
Hooke's ratio
Poisson's ratio
Plastic ratio
33. The force in BF of the truss shown in given figure, is--
4t tension
4t compression
4.5t tension
4.5t compression
34. For calculating the permissible stress 0 y/[(1+ a(l/r)]is the empirical formula, known as --
Straight line formula
Parabolic formula
Perry's formula
Rankine's formula
35. A short column (30 cm x 20 cm) carries a load P1 at 4 cm on one side and another load P2at 8 cm on the other side along a principal section parallel to longer dimension. If the extreme intensity on either side is same, the ratio of P1 to P2 will be--
2/3
3/2
8/5
5/8
36. For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is --
0.303
0.404
0.505
0.707
37. For beams breadth is constant,--
Depth d M
Depth d
Depth d 3
Depth d 1/M
38. একক ক্ষেত্রের উপর প্রতিরোধী বলকে বলে --
Strain (বিকৃতি)
Shear (করুন)
Moment (ভ্রামক)
Stress (পীড়ন)
39. The ratio of maximum shear stress to average shear stress of a circular beam, is--
2/3
3/2
3/4
4/3
40. Pick up the correct statement from the following:
In a loaded beam, the moment at which the first yield occurs is called yield moment
In a loaded beam, the moment at which the entire section of the beam becomes fully plastic, is called plastic moment
In a fully plastic stage of the beam, the neutral axis divides the section in two sections of equal area
All the above