# Mechanical Engineering:: Strength of Materials

### Exercise

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#### In the above question, the ratio of stiffness of spring 'B' to spring 'A' will be

 A. 2 B. 4 C. 6 D. 8

#### In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that

 A. stress is uniform throughout the beam B. strain is uniform throughout the beam C stress is proportional to the distance from the neutral axis D. strain is proportional to the distance from the neutral axis

#### The deformation of a bar under its own weight is __________ the deformation, if the same body is subjected to a direct load equal to weight of the body.

 A. equal to B. half C. double D. quadruple

#### Principle plane is a plane on which the shear stress is

 A. zero B. minimum C. maximum

#### A thin spherical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p). The stress in the shell material is

 A. pd/t B. pd/2t C. pd/4t D. pd/8t

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