Answer / karthick

when there is a sudden stoppage of flow in a pipe then the
pressure wave is generated inside the fluid which travels
in opposite direction and it collides with the surface of
the pipe wall.This is called water hammering

Answer / syed ahsan

There is another Phenomena in water hammer that when Hotter fluid mixes with colder then due to temperature the dense and lighter water molecules collide with each other with heavy sound.When steam mixes with colder pipe work in condensate pipe work it happens there too.

1. Centrifugal pump is used to drain the coolant from the machine to coolant tank via magnetic separator and paper filter. But more foam is raising in the coolant tank. We need to arrest the foam formation inside tank which is nt desired. How do we correct this issue? (Hardness of the water is at recommended ppm).

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wt is dynamic coupling????

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want to drdo paper for the post of tech.asstt.(mech)

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if the principle stresses in a plan stress problem are @1=100 Mpa,@=40 Mpa, the magnitude of the maximum shear stress (in Mpa)will be

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What is a clock maker called?

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whose unit is Psi ?

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What is mean by greenfield project?

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Dear sir, I have applied section engineer post at rrb Chennai.Please send me the previous technical question papers and answers

0 Answers   RRB,

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