Fluid Mechanics The Prandtl mixing length is Zero at the pipe wall and is a universal constant Useful for computing laminar flow problems Independent of radial distance from the pipe axis Independent of the shear stress Zero at the pipe wall and is a universal constant Useful for computing laminar flow problems Independent of radial distance from the pipe axis Independent of the shear stress ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶m²/s). 0.24 24000 0.44 24 0.24 24000 0.44 24 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance). V/Vmax = (r/x)1/7 V/Vmax = (x.r)1/7 None of these V/Vmax = (x/r)1/7 V/Vmax = (r/x)1/7 V/Vmax = (x.r)1/7 None of these V/Vmax = (x/r)1/7 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The temperature in isentropic flow Cannot drop and then increase again downstream Does not depend on Mach number Depends on Mach number only None of these Cannot drop and then increase again downstream Does not depend on Mach number Depends on Mach number only None of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The resistance wire used in a hot wire anemometer for conducting electrical current is made of Tungsten Aluminium Chromium Copper Tungsten Aluminium Chromium Copper ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Power number is the ratio of Inertial stress to gravitational stress Inertial stress to drag stress Drag stress to inertial stress Gravitational stress to drag stress Inertial stress to gravitational stress Inertial stress to drag stress Drag stress to inertial stress Gravitational stress to drag stress ANSWER DOWNLOAD EXAMIANS APP
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