m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if__________________?

A. M = m1 + m2
B. M = m1 + m2 + 1
C. M = m1 + m2 + 2
D. M = m + m + 3

For a strongest rectangular beam cut from a circular log, the ratio of the width and depth, is________________?

A. 0.303
B. 0.404
C. 0.505
D. 0.707

The ratio of maximum shear stress to average shear stress of a circular beam, is________________?

A. 2/3
B. 3/2
C. 3/4
D. 4/3

The force in BF of the truss shown in given figure, is_______________?

A. 4t tension
B. 4t compression
C. 4.5t tension
D. 4.5t compression

The ratio of lateral strain to axial strain of a homogeneous material, is known___________________?

A. Yield ratio
B. Hooke’s ratio
C. Posison’s ratio
D. Plastic ratio

In the truss shown in given figure the force in member DC is________________?

A. 100 t compressive
B. 100 t tensile
C. Zero
D. Indeterminate

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________________?

A. L/d
B. L/2d
C. (l/2d)²
D. (l/3d)²

The strain energy due to volumetric strain________________?

A. Is directly proportional to the volume
B. Is directly proportional to the square of exerted pressure
C. Is inversely proportional to bulk modulus
D. All the above

The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called______________?

A. Stiffness
B. Proof resilience
C. Proof stress
D. Proof load

A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm2), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is_____________?

A. 25 n
B. 30 n
C. 35 n
D. 40 n