FLUID MECHANICS QUIZ

The inherent characteristic of an equal percentage valve relating flow rate 'q' with valve stem movement 'x' are described by the equation

dq/dx = K

dq/dx = K.q

dq/dx = Kq²

dq/dx = K/q

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A centrifugal pump is called a turbine pump, if it is having a

Rotating vaned volute

Vaned diffusion casing

Turbine type impeller

None of these

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Which of the following produces maximum pressure difference for transportation of gases?

Fans

Vaccum pumps

Blowers

Compressors

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Rubber latex is an example of a __________ .fluid.

Pseudoplastic

Dilatent

Newtonion

Bingham plastic

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Which law/principle of solid mechanics is similar/equivalent to Newton's law of viscosity in fluid mechanics?

Newton

Archimedes principle

Hooke

Newton

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In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant?

Unsteady

Turbulent

Rotational

Non-uniform

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Cp/Cv is termed as

Weber number

Mach number

Prandtl number

Adiabatic constant

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While starting a centrifugal pump, its delivery valve should be kept

Opened

Either opened or closed ; it does not make any difference

Closed

Either opened or closed; depending on the fluid viscosity

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The Prandtl mixing length is

Zero at the pipe wall and is a universal constant

Independent of radial distance from the pipe axis

Useful for computing laminar flow problems

Independent of the shear stress

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A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.

Ideal

Incompressible

Non-Newtonion

Newtonion

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