## Fluid Mechanics Reciprocating pumps compared to centrifugal pumps

Are not subject to air binding
Can be operated with delivery valve closed
Deliver liquid at uniform pressure
Can handle slurries more efficiently

√(HW/π)
HW/4(H + W)²
2HW/(H + W)²
HW/2(H + W)²

## Fluid Mechanics Select the wrong statement pertaining to flow of an incompressible fluid through a venturimeter.

Venturimeter occupies less space than an orificemeter
Venturimeter incurs less power loss compared to an equivalent orificemeter
For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the venturimeter
Discharge of fluid through a venturimeter depends upon the gage difference irrespective of the orientation of venturimeter

Hyperbola
Parabola
Semi-circle
Semi-ellipse

## Fluid Mechanics The terminal velocity of a small sphere settling in a viscous fluid varies as the

First power of its dimeter
Square of the difference in specific weights of solid & fluid
Inverse of the fluid viscosity
Inverse square of the diameter

## Fluid Mechanics Cavitation in a centrifugal pump can be avoided by keeping the

Outlet pressure high
Inlet pressure low
Inlet pressure high
Outlet pressure low