Inertial force is force that has resistance to any physical object that undergoes a change in its state of motion. Inertial force is product acceleration of fluid and its mass. It acts opposite to direction of acceleration.

After inspection, pump casing hydrostatic test is performed. It takes place only after successful completion of pump casing inspection.

One of major advantages of model analysis is that we can predict alternative designs. It provides safest design in most economical way.

The standard symbol for Archimedes number is Ar. Archimedes number in fluid mechanics deals with motion of fluids. This takes place due to differences in ir densities. It was followed by Archimedes principle.

The symbol used for viscosity is false. Viscosity is denoted by symbol ?µ? (Mew). It is defined as resistance to flow of fluid. Resistance takes place as one layer of fluid slides over or.

Physical similitude is also called similitude of shape. It is for modelling same geometric shape as that of its prototype. Which means, that shape will have to be divided by a scale factor.

Specific can be written dimensionally by [F]. This is by adopting basic SI or MKS units (FLT system). Where, [F] is mass, [L] is length and [T] is time. Thus, correct option is [F].

The lift force acts in perpendicular direction to that of relative flow velocity. It acts in perpendicular direction with respect to a surrounding fluid flow. Thus, option Perpendicular direction is correct.

For a dynamic similarity between a model and a prototype, ratio of ir forces in model and prototype must be equal. It means that dynamic similarity between a model and a prototype must be same.

NPSH stands for Net Positive Suction Head. The main function of NPSH test is to measure ability of pump. It helps to avoid cavitation at inlet section of pump.