Fluid Mechanics Net positive suction head (NPSH) of a centrifugal pump must be Less than barometric pressure Equal to the vapour pressure of the liquid Greater than the vapour pressure of the liquid Less than the vapour pressure of the liquid Less than barometric pressure Equal to the vapour pressure of the liquid Greater than the vapour pressure of the liquid Less than the vapour pressure of the liquid ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone. 10 1 70 40 10 1 70 40 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length. Prandtl mixing Transition Equivalent None of these Prandtl mixing Transition Equivalent None of these ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small. Electrical conductivity Thermal conductivity Specific gravity Electrical resistivity Electrical conductivity Thermal conductivity Specific gravity Electrical resistivity ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Velocity distribution for flow between two fixed parallel plates Is constant over the entire cross-section Varies parabolically across the section None of these Is zero at the plates and increases linearly to the midplane Is constant over the entire cross-section Varies parabolically across the section None of these Is zero at the plates and increases linearly to the midplane ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics While starting a centrifugal pump, its delivery valve should be kept Closed Either opened or closed; depending on the fluid viscosity Opened Either opened or closed ; it does not make any difference Closed Either opened or closed; depending on the fluid viscosity Opened Either opened or closed ; it does not make any difference ANSWER DOWNLOAD EXAMIANS APP
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