Chemical Engineering · all questions

Fluid Mechanics
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Q641

The Stoke's stream function applies to the

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Q642

In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, V_avg = average fluid velocity)

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Q643

For Laminar flow through a packed bed, the pressure drop is proportional to (V_s is the superficial liquid velocity and D_p is the particle diameter)

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Q644

The equation given below is called the __________ .

f^{- 0.5} = 4.07 lo g_{e} (N_{Re} f)^{- 0.6}

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Q645

The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.

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Q646

Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

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Q647

The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is

Δ p .

If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

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Q648

The simple pitot tube measures the __________ pressure.

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Q649

The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

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Q650

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

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Q651

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

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Q652

The continuity equation

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Q653

Bernoulli's equation is not applicable, when the flow is

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Q654

Permanent pressure loss in a well designed venturimeter is about __________ percent of the venturi differential.

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Q655

The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.

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Q656

For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of

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Q657

Specific speed of a centrifugal pump relates it with another pump having the

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Q658

High specific speed of a pump implies that, it is a/an __________ pump.

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Q659

Low specific speed of a pump implies that, it is a/an __________ pump.

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Q660

The temperature in isentropic flow

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