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Mechanical Engineering Objective Questions { Strength of Materials }



134.  The nature of the stress in horizontal members of the truss shown in Fig. 6.3 may be
A. compressive
B. tensile
C. shear
D. zero
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135.  The force in DB of the truss shown in Fig. 6.3 is
A. W compression
B. FW tension
C. 2 W compression
D. 5 W tension
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136.  The force in the member DE of the truss shown in Fig. 6.3 will be
A. zero
B. 2 W tensile
C. 2 W compressive
D. 4 W compressive
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137.  Pick up the correct statement from the following :
A. A ductile material has large plastic zone
B. A brittle material has no plastic zone
C. A rigid material has no plastic zone
D. All the above.
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138. Pick up the correct statement from the following :
A. The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance
B. In visco-elastic material, stress-strain relation is dependent on time
C. An instropic material has different properties is different directions
D. All the above.
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139. The value of Poisson's ratio always remains
A. greater than one
B. less than one
C. equal to one
D. none of these.
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140.  The number of points of contraflexure in a simple supported beam carrying uniformly distributed load, is
A.1
B.2
C.3
D.0
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