Fluid Mechanics The unit of dynamic viscosity in SI unit is m/N. sec kg/m . sec m² /sec N/m² m/N. sec kg/m . sec m² /sec N/m² 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 None of these Increases linearly with V Decreases linearly with V Decreases as V² None of these Increases linearly with V Decreases linearly with V Decreases as V² ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics For laminar flow through a closed conduit Vmax = 1.5Vav Vmax = 0.5Vav Vmax = 2Vav Vmax = Vav Vmax = 1.5Vav Vmax = 0.5Vav Vmax = 2Vav Vmax = Vav 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 Δp 2Δp Δp/2 Δp² Δp 2Δp Δp/2 Δp² ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as V-0.2 V2.7 V1.8 V2 V-0.2 V2.7 V1.8 V2 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of Absolute roughness Relative roughness Friction co-efficient for flows at equal Reynold number All of these Absolute roughness Relative roughness Friction co-efficient for flows at equal Reynold number All of these ANSWER DOWNLOAD EXAMIANS APP
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