Fluid Mechanics The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe. Hyperbola Semi-circle Parabola Semi-ellipse Hyperbola Semi-circle Parabola Semi-ellipse ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air. 0.04πgH/3 0.01πgH/4 4πg/3 0.01πgH/8 0.04πgH/3 0.01πgH/4 4πg/3 0.01πgH/8 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Power number is the ratio of Drag stress to inertial stress Inertial stress to drag stress Gravitational stress to drag stress Inertial stress to gravitational stress Drag stress to inertial stress Inertial stress to drag stress Gravitational stress to drag stress Inertial stress to gravitational stress ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1 Decreases as V² Decreases linearly with V Increases linearly with V None of these Decreases as V² Decreases linearly with V Increases linearly with V None of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Vane anemometer None of these Is a variable head meter Rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed Is an area meter None of these Is a variable head meter Rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed Is an area meter ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is Same in both the tubes Zero in both the tubes Greater in 1 mm dia tube Greater in 0.5 mm dia tube Same in both the tubes Zero in both the tubes Greater in 1 mm dia tube Greater in 0.5 mm dia tube ANSWER DOWNLOAD EXAMIANS APP
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