The force in DB of the truss shown in below figure is 3 W compression W tension

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Question
The force in DB of the truss shown in below figure is
Options
A. 3 W compression
B. W tension
C. 2 W compression
D. 5 W tension
E. 4 W tension.

Correct Answer

W tension

Strength of Materials problems

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3. A simply supported beam carrying a uniformly distributed load over its whole span, is propped at the centre of the span so that the beam is held to the level of the end supports. The reaction of the prop will be
Options
A. half the distributed load
B. 3/8th the distributed load
C. 5/8th the distributed load
D. distributed load.
E. none of these.

4. A beam is said to be of uniform strength, if
Options
A. B.M. is same throughout the beam
B. deflection is same throughout the beam
C. bending stress is same throughout the beam
D. shear stress is same throughout the beam
E. none of these.

5. The ratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire length, is
Options
A. 1
B.
C.
D.
E.

6. In a loaded beam, the point of con-traflexture occurs at a section where
Options
A. bending moment is minimum
B. bending moment is zero or changes sign
C. bending moment is maximum
D. shearing force is maximum
E. shearing force is minimum.

7. If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint
Options
A. one of the forces must be zero
B. each force must be zero
C. forces must be equal and of the same sign
D. forces must be equal in magnitude but opposite in sign.

8. The ratio of the moment of inertia of a circular plate and that of a square plate for equal depth, is
Options
A. less than one
B. equal to one
C. more than one
D. equal to 3?/16
E. none of these.

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