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 as V² Decreases linearly with V None of these Increases linearly with V Decreases as V² Decreases linearly with V None of these Increases linearly with V ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity) 1.5 Vavg 1.2 Vavg 1.8 Vavg Vavg 1.5 Vavg 1.2 Vavg 1.8 Vavg Vavg ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Select the wrong statement pertaining to flow of an incompressible fluid through a venturimeter. Venturimeter incurs less power loss compared to an equivalent orificemeter Discharge of fluid through a venturimeter depends upon the gage difference irrespective of the orientation of venturimeter Venturimeter occupies less space than an orificemeter For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the venturimeter Venturimeter incurs less power loss compared to an equivalent orificemeter Discharge of fluid through a venturimeter depends upon the gage difference irrespective of the orientation of venturimeter Venturimeter occupies less space than an orificemeter For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the venturimeter ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the Fluid velocity in the pipe Pipe length Time taken to close the valve All of these Fluid velocity in the pipe Pipe length Time taken to close the valve All of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition. ∂/∂s = 0 ∂/∂t = 0 ∂/∂t = constant ∂/∂s = constant ∂/∂s = 0 ∂/∂t = 0 ∂/∂t = constant ∂/∂s = constant ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A stream line is Always the path of particle Drawn normal to the velocity vector at every point Fixed in space in steady flow A line connecting the mid points of flow cross-section Always the path of particle Drawn normal to the velocity vector at every point Fixed in space in steady flow A line connecting the mid points of flow cross-section ANSWER DOWNLOAD EXAMIANS APP
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