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Plastic Deformation (Slip And Twinning)

When a metal is stressed below its elastic limit, the resulting deformation or strain produced in the metal is temporary. This strain or deformation vanishes after the removal of stress and the metal goes back to the original dimensions. When it is stressed above the elastic limit, permanent deformation takes place …

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Orthogonal And Oblique Cutting

Orthogonal Cutting In orthogonal cutting, the tool approaches the work piece with its cutting edge parallel to the uncut surface and at right angles to the direction of cutting. Thus tool approach angle and cutting edge inclination are Zero. This type of cutting is also known as Two-dimensional Cutting. Also …

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Carnot Cycle Efficiency

This cycle was devised by carnot in 1824  and expanded by others in the 1830s and 1840s. carnot was the first scientist to analyze the problem of the efficiency of a heat engine, disregarding its mechanical details. He focussed mainly on the basic features of a heat engine. carnot cycle …

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Friction Definition And Types Of Friction

Friction And Types Of Friction The force which prevents the motion of a body over another body and acts in the direction opposite to the movement of the body is known as force of friction (or) simply friction. This force arises mainly due to the roughness and irregularities, which may …

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Surface Tension Of Water

Surface tension is defined as the force required to maintain unit length of the film in tension (or) it is the property of the liquid surface film to exert a tension. It is denoted by Greek letter σ (sigma) . In MKS units, it is expressed as kgf/m while in SI units …

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Venturimeter Principle

A venturimeter is a device used for measuring the rate of a flow of a fluid flowing through a pipe. It consists of three parts.  A short converging part  Throat  Diverging part It is based on the principle of Bernoulli’s equation. Inside of the venturimeter pressure difference is created by …

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