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Materials are an essential part of an engineering study. An engineer requires materials to provide shape to his concept and design. Selection of the right material job in the first and certainly the most important step to achieve this goal. Selection of right material for the right job requires a deep study of the various factors, which we shall discuss in the following chapters. Therefore an engineer should keep the materials scenario in mind while designing a component of machine otherwise, design may become redundant.
Watt; W (after J. Watt, 1736-1819): The derived SI unit of power, explained as a power of 1 J acting onto a period of 1 s; thus it has units of J/s.
construction & working.
There are several conditions for formation of cat ions ? Low Ionisational potential ? Lesser Charge ? More atomic size of atoms forms cations easily ? Ions having Inert
1.5 kg of Oxygen (N 2 ) and 0.15 kg of Helium (He 2 ) are separated by a partition in a vessel. The Nitrogen is at 5 bar and 90 o C and the Helium at 1 bar and 20 o C. The part
A base of rectangular vessel measures 10cm x 8cm.
If two forces P & Q act at such an angle that the resultant force r=p. Then show that if P is doubled the new resultant is at right angle Q and it's value is ( 4P 2 -Q 2 ) 1/2
Magnifying Glass: A biconvex lens of short focal length and low power which forms a virtual and magnified image of an object placed with its focal length is known as magnifying
what is the ratio of the frictional force and the normal force ?
which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon
The distance at any time because of any value of pulse meeting concurrently at a position in a medium is the vector addition of the individual distances due every one of the ray at
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