Which of the following conditions must be satisfied for lift force to be developed ?

Cavitation can be prevented by

Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will

Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε₀) with age/time (t) (where, ε = roughness of the surface after time't'. α = a co-efficient to be experimentally determined)?

Centrifugal compressors compared to reciprocating compressors

For laminar flow of Newtonion fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )

What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe)?

The line traced by a single fluid particle as it moves over a period of time is called __________ line.

In an incompressible flow of fluid, the fluid

The Reynolds number for an ideal fluid flow is

In a free vortex, the

Steady flow occurs, when the

When a fluid flows over a solid surface, the

Nominal size of a pipe is an indication of its __________ diameter.

Fluidised beds are formed, when the

The equivalent diameter for fluid flow through square cross section channel of side 'x', for pressure drop calculation purpose is given by

Air vessel provided in a reciprocating pump is for

U_mf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 U_mf to 2.5 U_mf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the

Slugging occurs in a fluidised bed, if the bed is

A globe valve is the most suitable for applications, in which

Nominal Pipe Size (NPS) of a pipe less thaninches in diameter indicates its

The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head.

A stream tube is that, which has __________ cross-section entirely bounded by stream lines.

Minimum fluidisation velocity for a specific system depends upon the

For pumping slurry, one can use a __________ pump.

The ratio of maximum to average velocity in case of streamline flow between parallel plates is

A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.

Pick out the wrong statement.

With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost

Pick out the wrong statement about cavitation.

A fluid is pumped at the rate oflb/sec to a height offt. The horse power required is __________ hp.

Hydraulic radius ofxcross-section, is __________ inches.

Baffles in mixing tanks are provided to

A hydraulic accumulator comprises of

__________ isused for measuring the static pressure exerted on the wall by a fluid flowing parallel to the wall in a pipeline.

Enamels and paints are generally __________ fluid.

I.D. of 1/schedulepipe is 0.364". I.D. of a 1/schedulepipe would be __________ inch

A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by

Potential flow is characterised by the

For the production of very high vacuum, a __________ pump is normally used.

Bernoulli's equation describes the

Pressure co-efficient is the ratio of pressure forces to __________ forces.

The velocity distribution in direction normal to the direction of flow in plane Poiseuille flow is

The maximum delivery pressure of a reciprocating compressor may be about __________ kg/cm².

Which of the following equations is valid for laminar flow of a fluid through packed bed?

Bernoulli's equation for steady, frictionless, continuous flow states that the __________ at all sections is same.

One stoke (unit of kinematic viscosity) is equivalent to

With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

Flow measurement in an open channel is done by a/an

Two liquids manometer is used for measuring small pressure differences in