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DENSITY (ρ ):
Density is defined as mass per unit volume; Density = mass/ volume; = m/v, kg/m3
P for Hg = 13.6 × 103 kg/m3
for water = 1000 kg/m3
Specific Volume (ν):
It is defined as volume occupied by the unit mass of the system. The unit of it is unit is m3/kg. Specific volume is reciprocal of density.
= v/m; m3/kg
Gathering Lines: A gathering line, also called a ladder track, is one into which a number of parallel tracks merge. This is shown in Figure. It is used in marshalling yards.
Cross Drainage Works: Culverts A large number of culverts are needed for taking care of the streams crossing the railway lines. The culverts can be one of the followi
Study literature and give a discussion of the applicability of the continuum mechanics hypothesis to the nano-scale mechanics (solids and fluids). Your paper must be detailed but c
show that energy of an isolated system is conserved
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Illustrate any three of the following : (i) Critical Damping (ii) Logarithmic decrement (iii) Vibration Isolation (iv) Equivalent stiffness of spring in series and in p
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Show continuity equation in cylindrical coordinates. Also list the assumptions made. A fluid flow is given by V = xy 2 i - 2yz 2 j - (zy 2 - 2z 3 /3) k Determine acceleration
Flash Butt Welding-Flashing The phenomenon of flashing is of extreme importance in achieving satisfactory welds. Flashing can begin only after a molten bridge has been formed s
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