A mixed flow centrifugal pump

Most of the centrifugal pumps used in chemical plants are usually __________ driven.

What is the pipe called which lifts water from a reservoir to a greater height than the initial level in the supply reservoir ?

Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

A 0.5 m high bed made up of a 1 mm dia glass sphere (densitykg/m³ ) is to be fluidised by water (densitykg/m³ ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is

A rotameter works on the principle of __________ pressure drop.

Differential manometer measures the

Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

Which of the following is not an advantage of fluidisation from transfer operation point of view?

Potential flow is the flow of

The Mach number for hypersonic flow of compressible fluid is

Small pressure differences in liquids is measured using a/an

For pipes that must be broken at intervals for maintenance, the connector used should be a/an

Ratio of pressure and inertia force gives __________ number.

In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature.

Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the

The distribution of shear stress in a stream of fluid in a circular tube is

Steady uniform flow is represented by flow through a/an

The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids

For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

Upto what value of 'Mach number', a fluid may be considered as incompressible ?

The value of critical Reynolds number for pipe flow is

Boundary layer thickness in turbulent flow over a flat plate increases as(where, d = distance from the leading edge.)

The unit of velocity head is

A rectangular surfacex 4', has the lower 3 edge horizontal andbelow a free oil surface (sp. gr. 0.8). The surface inclination iswith the horizontal. The force on one side of the surface is(where, y = specific weight of water)

In a stabilised soap bubble, pressure inside it compared to external pressure is

The excess of the sum of pressure & velocity heads over the vapor pressure of the liquid at the suction is called the

With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss

The head developed by a centrifugal pump is largely determined by the

Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.

Drag force on the float of a rotameter is(where Q = flow rate of the )

The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.

The continuity equation of fluid mechanics utilises the principle of conservation of

Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the

The valve used for very remote and accurate control of fluid is a __________ valve.

Which of the following properties of a fluid is responsible for offering resistance to shear ?

Erosion and pits formation on the impeller of a centrifugal pump may be due to

A bed of spherical particles (specific gravity 2.of uniform sizeμm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.Ergun's equation for the above fluid-particle system (in SI units) is given below :
Δ P/L =x 10³ V_OM + 10.x 10⁶ V²_OM (SI units)
If water is to be used as the fluidising medium, the minimum fluidisation velocity, V_OM is

The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.

Piezometric head is the sum of the __________ heads.

The vent valve provided in a liquid handling centrifugal pump is

Pick out the wrong statement:

Fanning friction factor is equal to(where, f_B = Blassius friction factor).

Capillary rise of mercury in a small diameter tube is proportional to (where, d = diameter of the tube, σ = surface tension of mercury)

For the same terminal conditions and fitting size, the least friction loss is incurred in a/an

A floating/submerged body is always stable, if its centre of gravity

Each term of the Bernoulli's equation written in the form, , represents the total energy per unit

Stoke's law is valid, when the particle Reynolds number is

Which of the following is not a dimension-less parameter ?

f = 16/N_Re, is valid for