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Notches and Weirs- Their classification and types

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Notch- is a device used for measuring the rate of flow or discharge of a liquid through  small channel or tank. Weir- is a concrete or masonry structure, placed in an open channel over which the flow occurs. It is form of vertical wall , with the sharp edge at the top, running all the way across the open channel. Notches Weirs 1. A notch may be defined as an opening provided in one side of a tank or reservoir,with upstream liquid level below the top edge of opening. 1. A weir may be defined as a structure constructed across a river or canal to store water on the upstream side. 2. The sheet of water flowing through a notch is called Nappe.  2. The sheet of water flowing over a weir is called Vein.  3. The bottom edge of a notch is called Crest. 3. The bottom edge of a weir is called Sill. 4. Usually made of metallic plates.  4. Weir is a concrete or masonry structure 5. Measures small discharge of small stream, lake or canal. 5. It...
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Klein's Construction

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Klein's Construction - is an graphical method to find velocity and acceleration of reciprocating parts of steam engine or internal combustion engine . In Klein's Construction the velocity and acceleration diagrams are made on configuration diagram itself. The line that represents the crank in the configuration diagram also represents the velocity and acceleration of its moving end in the velocity and acceleration diagrams respectively. By using this method we can find the velocity and acceleration of crank,connecting rod ,piston. Klein's Construction This method is applicable only if α of crank=0 or ω of crank=constant Method of obtaining velocity and acceleration  from the given values of crank length(r) and its angular velocity(ω) calculate crank velocity by  crank velocity Vc=r*ω crank acceleration Ac=r*ω*ω if dimensions of crank and connecting rod are such that they can be drawn on paper then there is no need to scale down the dimenions. if ...
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How to determine Coefficient of Viscosity

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  In study of Fluid Mechanics the viscosity is one of the major properties of fluid which is taken in consideration while analysing fluid motion.  Viscosity- is an fluid property which tends to oppose or resist the motion of one layer of fluid over another layer. Viscosity in fluids is analogous to friction in solids. The first basic formula for it was given by Newton and the Law is known as Newton's law of viscosity . It tells that Shear Stress between adjacent fluid layers is directly proportional to the rate of change of velocity.                                                                                                τ =  μ*( du/dy)                          ...
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