Q. Very small pressure difference (< 5 mm water coloumn) can be most conveniently measured by a/an __________ manometer.

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Q. For pipe flows, head is proportional to __________ at constant capacity(where, D = pipe diameter).

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Q. For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively).

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Q. The ratio of wall drag to total drag in the Stoke's law range is

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Q. Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.

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Q. A pitched-blade turbine draws __________ a straight blade turbine.

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Q. The most suitable flow measuring device for the fluid flow measurement in a very large diameter pipeline is a

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Q. A centrifugal pump is called a turbine pump, if it is having a

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Q. Acceleration head in a reciprocating pump

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Q. The ratio of inertial forces to elastic forces is called the __________ number.

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Q. Fluid flow at increasing rate through a diverging pipe is an example of __________ flow.

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Q. The temperature in isentropic flow

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Q. For laminar flow of Newtonion fluid in a circular pipe, the velocity distribution is a function of the distance 'd' measured from the centre line of the pipe, and it follows a __________ relationship.

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Q. The Prandtl mixing length is

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Q. N²ʀₑ/Nғᵣ is called the __________ number.

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Q. As the velocity V and thus the Reynolds number of a flow past a sphere increases from very low value, the drag force for Re << 1

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Q. The pressure head of a flow meter remains constant for

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Q. A venturimeter can not be used for the direct measurement of

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Q. A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double

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Q. Which of the following is used for very accurate measurement of flow of gas at low velocity ?

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