The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/√f)-0.4, is called the _____________ equation?

Related Mcqs:

Fanning friction factor equation applies to the _____________ fluid flow?

A. Non-isothermal condition of B. Compressible C. Both A. and B. D. Neither A. nor B....

Pick out the wrong statement?

A. A fluid mass is free from shearing forces, when it is made to rotate with a uniform velocity B. Newton’s law of viscosity is not applicable to the turbulent flow of fluid with linear velocity distribution C. Laminar flow of viscous liquids is involved in the lubrication of various types of bearings D. Rise … Pick out the wrong statement?Read More...

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...

In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?

A. Flow of liquid upward in a vertical pipe B. Flow through a converging section C. Flow of air downward in a pipe D. Impossible in a constant cross-section conduit...

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

A. Cavitation B. Low speed of impeller C. Its operation with delivery valve closed for considerable time after starting the pump D. Off centering of pump with motor...