Which of the following processes cannot be made reversible even under ideal condition of operation?

1.2 to 3.8 cms is the value of the ________?

Fatigue failure of a material may occur, when it is subjected to ________ stress?

Rayleigh equation applies to ________ distillation?

Number of secondary neutron emitted on fission of an atom of U-235 by slow neutron bombardment is________?

A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V0. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area q(x/L)2, what will be axial velocity in the pipe at any „x‟? Assume incompressible one dimensional flow i.e., no gradients in the radial direction?