Q. Which of the following must be followed by the flow of a fluid (real or ideal)?

(I) Newton's law of viscosity.
(II) Newton's second law of motion.
(III) The continuity equation.
(IV) Velocity of boundary layer must be zero relative to boundary.
(V) Fluid cannot penetrate a boundary.

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Q. Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?

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Q. Boundary layer exists in flow

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Q. Rubber latex is an example of __________ fluid.

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Q. Velocity head on sudden enlargement in a horizontal pipe is converted into __________ head.

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Q. The momentum correction factor for the velocity distribution of laminar flow is

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Q. For the same flow rate of a fluid, the pressure drop is the least for

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Q. The valve commonly used in pipes larger than 2" dia is a

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Q. Foot valves are provided in the suction line of a centrifugal pump to

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Q. An ideal fluid is

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Q. The distance between metacentre and __________ is called metacentric height.

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Q. Check valve is used for __________ flow.

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Q. Capacity of a rotary gear pump can be varied by

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Q. For a given Reynolds number, in a hydraulically smooth pipe, further smoothening __________ the friction factor.

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Q. Power number is the ratio of

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Q. The frictional resistance in laminar flow does not depend on the

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Q. A venturimeter measures the

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Q. Gradually varying fluid flow is an example of __________ flow.

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Q. Drag is the force component exerted on an immersed object,

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Q. To handle smaller quantity of fluid at higher discharge pressure, use a __________ pump.

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