Fluid Mechanics Shear stress in a fluid flowing in a round pipe Varies parabolically across the cross-section Remains constant over the cross-section Is zero at the centre and varies linearly with the radius Is zero at the wall and increases linearly to the centre Varies parabolically across the cross-section Remains constant over the cross-section Is zero at the centre and varies linearly with the radius Is zero at the wall and increases linearly to the centre ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be 2Δp Δp Δp/2 Δp² 2Δp Δp Δp/2 Δp² ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.) √d d2 d1/3 d2/3 √d d2 d1/3 d2/3 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics While starting an axial flow pump, its delivery valve should be kept Open None of these Closed Either open or closed Open None of these Closed Either open or closed ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small. Thermal conductivity Specific gravity Electrical resistivity Electrical conductivity Thermal conductivity Specific gravity Electrical resistivity Electrical conductivity ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In laminar flow through a round tube, the discharge varies As the square of the radius Inversely as the pressure drop Linearly as the viscosity Inversely as the viscosity As the square of the radius Inversely as the pressure drop Linearly as the viscosity Inversely as the viscosity ANSWER DOWNLOAD EXAMIANS APP
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