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 With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss Increases Decreases Increases linearly Remains constant Increases Decreases Increases linearly Remains constant ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In frictional fluid flow, the quantity, P/ρ + V²/2gc + gz/gc, is None of these Increased in the direction of flow Constant along a streamline Not constant along a streamline None of these Increased in the direction of flow Constant along a streamline Not constant along a streamline 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 None of these Decreases as V² Increases linearly with V Decreases linearly with V None of these Decreases as V² Increases linearly with V ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Cavitation in a centrifugal pump results from High discharge rate Low barometric pressure High discharge velocity High discharge pressure High discharge rate Low barometric pressure High discharge velocity High discharge pressure ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A 2" gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is > Δp Δp < Δp Δp² > Δp Δp < Δp Δp² ANSWER DOWNLOAD EXAMIANS APP
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