Oceans of games

  Definition.  the strength of a material is its ability to withstand an applied load without failure or plastic deformation. The field of strength of materials deals with forces and deformations that result from their acting on a material. 1) What is stress Stress is defined as the intensity of force that acts per unit area.   stress [σ] = F/A 2) What is strain? Strain is defined as the ratio of change in dimension to the original dimension.  strain [ε] = Δl/l 3) What are the different kinds of stresses. There are three kinds of stresses - Normal stress, Shear stress, and Volumetric stress. Normal stress [σ] - Normal stress occurs when a force acts perpendicular to the surface area.               Normal stress [σ] = F/A   Shear stress [τ] - Shear stress occurs when a force acts parallel to the surface area.                  Shear stress [τ] = F/A   Volumetric stress [σv] - Volumetric stress occurs when a force acts such that it create in increase volume. 4) What are the different

  Design of machine Elements Interview Questions with Answers (Shafts, Keys, Bolts, Nuts, Screws, fasteners, Bearings, Flywheel & Governor) 1. Define the term critical speed. The speed, at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes infinite, is known as critical or whirling speed. 2. Factors considered designing a shaft? Strength and Stiffness 3. What is a key? What are the types of keys? A key is device, which is used for connecting two machine parts for preventing relative motion of rotation with respect to each other. The different types of keys are Saddle key Tangent key Sunk key Round key and taper pin 4. What is the main use of woodruff keys? A woodruff key is used to transmit small value of torque in automotive and machine tool industries. The  key-way  in the shaft is milled in a curved shape whereas the key way in the hub is usually straight. 5. What are the various failures occurred in sunk keys? Shear failure and