## Fluid Mechanics Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will

Decrease
Remain same
Increase
Data insufficient to predict pressure drop

## Fluid Mechanics Scale up of agitator design requires

Both geometrical and dynamic similarity
Geometrical similarity only
Dynamic similarity only
All of these

## Fluid Mechanics Which law/principle of solid mechanics is similar/equivalent to Newton's law of viscosity in fluid mechanics?

Newton
Hooke
Newton
Archimedes principle

## Fluid Mechanics Interstage coolers are provided in a multistage compressor to

Achieve the exact delivery pressure
None of these
Save power in compressing a given volume to a given pressure
Cool the delivered air

## Fluid Mechanics Path followed by water jet issuing from the bottom of a water tank will be a

Zig-zag path (which is geometrically undefined)
Hyperbola
Parabola (vertex being at the opening)
Horizontal straight line

## Fluid Mechanics Curve III in the above diagram represents a/an

Dilatent fluid
None of these
Pseudo plastic fluid
Ideal plastic