Q. Colebrook equation for friction factor in turbulent flow is given by following equation. It reduces to Nikuradse equation for a value of ε/D equal to

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Q. The percentage slip in a reciprocating pump set is given by the % of (where, Q₁ = actual discharge Q₂ = theoretical discharge)

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Q. A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke's law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity

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Q. The pitot static tube does not measure the __________ pressure.

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Q. The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.

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Q. In fluid flow, cavitation is caused, if the

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Q. The ratio of the depth of flow to the hydraulic radius for the most economical trapezoidal section, in open channel flow is

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Q. Which of the following denotes the effect of compressibility in fluid flow ?

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Q. Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.

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Q. The terminal velocity of a small sphere settling in a viscous fluid varies as the

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Q. If the discharge of a centrifugal pump is throttled, then its suction lift

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Q. Foot valves provided in pumps are __________ valves.

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Q. With increasing flow rate, the hydraulic efficiency of a centrifugal pump

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Q. The velocity profile for turbulent flow through a closed conduit is

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Q. 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

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Q. Water hammer in a pipeline results from the

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Q. Molten soap mass is transported by a __________ pump.

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Q. At high Reynolds number

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Q. Power loss in an orificemeter is __________ that in a venturimeter.

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Q. The terminal velocity of a particle moving through a fluid varies as dₚⁿ. What is the value of 'n' for Newton's law regime ?

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