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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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What is NPTEL and why should a student enroll in one of it courses once in a lifetime

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NPTEL- provides E-learning through online web and video courses in various streams. hello enthusiasts ,many of you are willing to join NPTEL courses and looking on google for it. So let me tell it for all of you . NPTEL What is NPTEL? The National Programme on Technology Enhanced Learning (NPTEL) was initiated by seven Indian Institutes of Technology (Bombay, Delhi, Kanpur, Kharagpur, Madras, Guwahati and Roorkee) along with the Indian Institute of Science, Bangalore in 2003. Five core disciplines were identified, namely, civil engineering, computer science and engineering, electrical engineering, electronics and communication engineering and mechanical engineering and 235 courses in web/video format were developed in this phase. The main goal of NPTEL Phase II (2009-14) was to build on the engineering and core science courses launched previously in NPTEL Phase I. An additional 600 web and video courses were created in all major branches of engineering, physical sciences a...
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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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