What causes cavitation in centrifugal pump ?

Related Mcqs:

The location of centre of pressure, which defines the point of application of the total pressure force on the surface, can be calculated by applying the principle of moments according to which “sum of the moment of the resultant force about an axis is equal to the sum of the components about the same axis”. The centre of pressure of a rectangular surface (of width ‘w’) immersed vertically in a static mass of fluid is at a depth of (where, y = depth of the liquid) ?

A. 1/(y/3) B. 2y/3 C. 1/(y/4) D. 3y/4...

For turbulent flow of an incompressible fluid through a pipe, the flow rate „Q‟ is proportional to (Δ P)n, where ΔP is the pressure drop. The value of exponent ‘n’ is_________________?

A. 1 B. 0 C. < 1 D. > 1...

With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?

A. Decrease B. Increase C. Remain same D. Unpredictable...

Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement ?

A. f1 = f2 B. f1 < f2 C. f1 > f2 D. Data not sufficient to relate f1 & f2...

The Prandtl mixing length is_________________?

A. Zero at the pipe wall and is a universal constant B. Independent of radial distance from the pipe axis C. Independent of the shear stress D. Useful for computing laminar flow problems...