Fluid Mechanics
The equation given below is called the __________ . f-0.5 = 4.07 loge (NRe√f)-0.6

Von-Karman equation
Fanning equation
Colebrook formula
None of these

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Fluid Mechanics
Vane anemometer

Is an area meter
None of these
Is a variable head meter
Rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed

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Fluid Mechanics
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of

Relative roughness
Absolute roughness
Friction co-efficient for flows at equal Reynold number
All of these

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