Q. For ideally incompressible fluid, the Mach number will be

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Q. In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas)

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Q. Boundary layer separation is caused by the

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Q. With increase in temperature, the vapor pressure of liquids

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Q. A mercury (specific gravity = 13.6) manometer connected across an orificemeter fitted in a pipe shows a manometer reading of 2 cms. If the manometer liquid is changed to carbon tetrachloride (specific gravity = 1.6), then for the same flow rate of water the new manometer reading will be __________ cms.

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Q. Remote control valve is a __________ valve.

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Q. Which of the following quantities are computed by using the hydraulic radius for non-circular ducts ?

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Q. Centre of pressure in an immersed body is __________ the centre of gravity.

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Q. The centre of pressure is

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Q. The uniformity of a gas fluidised bed depends upon the __________ of the solid particles.

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Q. A differential pressure cell is used for

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Q. If more than two branches of pipes are to be connected at the same point, then use a/an

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Q. In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the __________ efficiency.

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Q. Pick out the wrong statement.

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Q. Mass velocity is independent of temperature & pressure, when the flow is

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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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