orifice plate
venturi
pitot tube
rotameter

Hydraulics & Fluid Mechanics Select the correct statement

Local atmospheric pressure is always below standard atmospheric pressure
Standard atmospheric pressure is the mean local atmospheric pressure a* sea level
A barometer reads the difference be-tween local and standard atmospheric pressure
Local atmospheric pressure depends upon elevation of locality only

9.75 m/sec²
10m/sec²
10.2/m sec
9.81 m/sec²

Hydraulics & Fluid Mechanics The normal stress is same in all directions at a point in a fluid

When there is no motion of one fluid layer relative to an adjacent layer
only when the fluid is incompressible and has zero viscosity
irrespective of the motion of one fluid layer relative to an adjacent layer
only when the fluid is frictionless

Hydraulics & Fluid Mechanics If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is

between 1 and 100
200
160
less than 1

1/2
2/3
1/4
1/3