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 The ratio of pressure forces to inertial forces is called the __________ number. Reynold Froude Euler Mach Reynold Froude Euler Mach ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 10³ VOM + 10.94 x 10⁶ V²OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is 16 mm/s 28 mm/s 12 mm/s 24 mm/s 16 mm/s 28 mm/s 12 mm/s 24 mm/s 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 linearly with V Decreases as V² None of these Increases linearly with V Decreases linearly with V Decreases as V² None of these Increases linearly with V ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics With increase in molecular weight of the gas, the head developed by a centrifugal compressor will Increase Decrease Remain same Unpredictable Increase Decrease Remain same Unpredictable ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A centrifugal pump is called a turbine pump, if it is having a Rotating vaned volute Vaned diffusion casing Turbine type impeller None of these Rotating vaned volute Vaned diffusion casing Turbine type impeller None of these ANSWER DOWNLOAD EXAMIANS APP
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