SSC JE Mechanical Engineering 2012

The strain energy stored in a cantilever beam loaded as shown, will be

The torque producing a unit twist in a shaft of unit length is

Mass per unit of the belt of an open belt drive is 1.5 $$\frac{kg}{m}$$. if the linear velocity of the belt is 10m/s and radius of driving pulley 0.5m, centrifugal tension in the belt is

For a Helical spring, spring index is

Rankine formula (for a column) takes into account which of the following ?

A circular shaft of length L and diameter D is fixed in one end. The other end of the shaft is subjected to a twisting moment T. the angle of rotation of the free end with respect to the fixed end is $$\theta$$. What will be the angle of rotation of the free end if length is doubled and diameter is reduced to $$\frac{D}{2}$$?

Two simply supported beam A and B has the same length L and subjected to equal bending moment M. the stress induced in the beam A and B are $$\sigma_{A} and \sigma_{B}$$
respectively. If the cross section of beam A is b x b/2 and that of beam B is $$\frac{b}{2} \times b$$, then correct relation between $$\sigma_{A} and \sigma_{B} $$is

In a tensile test of a specimen, the ratio of maximum load to the original cross-section area of the test piece is called

Which one of the following assumptions in the theory of pure torsion is false ?

If a beam supported on more than two supports, is called a