Fluid Mechanics Shear stress in a fluid flowing in a round pipe Remains constant over the cross-section Varies parabolically across the cross-section Is zero at the wall and increases linearly to the centre Is zero at the centre and varies linearly with the radius Remains constant over the cross-section Varies parabolically across the cross-section Is zero at the wall and increases linearly to the centre Is zero at the centre and varies linearly with the radius ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid. None of these Newtonion Perfect Bingham None of these Newtonion Perfect Bingham 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). 24000 24 0.24 0.44 24000 24 0.24 0.44 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Consider a centrifugal pump having a specific impeller diameter, fixed impeller speed pumping a liquid of constant density at a particular discharge capacity. With decrease in the capacity of the pump, the __________ decreases. All of these BHP required by the pump Head of the liquid pumped NPSH required All of these BHP required by the pump Head of the liquid pumped NPSH required ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics __________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm². Piston Plunger Vane Centrifugal Piston Plunger Vane Centrifugal ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Steady flow occurs, when the Rate of the velocity change is constant Conditions do not change with time at any point Conditions are the same at the adjacent points at any instant Conditions change steadily with time Rate of the velocity change is constant Conditions do not change with time at any point Conditions are the same at the adjacent points at any instant Conditions change steadily with time ANSWER DOWNLOAD EXAMIANS APP
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