Fluid Mechanics MCQs

Zero at the pipe wall and is a universal constant

Independent of radial distance from the pipe axis

Independent of the shear stress

Useful for computing laminar flow problems

Non-sticky & non-corrosive nature

High vapour pressure

Low viscosity & surface tension

Low co-efficient of thermal expansion

Directly as square of gas density

Directly as gas density

Directly as square root of gas density

Inversely as gas density

Shear stress to gravitational stress

Drag stress to shear stress

Inertial stress to shear stress

Inertial stress to gravitational stress

0.5

2

4

1

Potential

Streamline

Creep

Boundary layer

(d₁/d₂)0.8

(d₁/d₂)0.5

(d₁/d₂)

(d₁/d₂)2

Large capacity & high head

Large capacity & low head

Small capacity & high head

Small capacity & low head

Velocity at a point in the flow

Pressure at a point

Average flow velocity

Pressure difference in pipe flow

Venturimeter

Orificemeter

Rotameter

Pitot tube