Fluid Mechanics for Chemical Quiz 15

With increasing flow rate, the hydraulic efficiency of a centrifugal pump___________?

Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of _______ pressure?

With increase in molecular weight of the gas, the head developed by a centrifugal compressor will_________?

With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss________?

Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?

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

Which of the following properties of a fluid is responsible for offering resistance to shear ?

With the increase in depth, the hydrostatic pressure in an un-accelerated incompressible fluid (in a constant gravitational field) ?

With increase in pump speed, its NPSH requirement__________?

Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?

Working of a ________ pump characterises mixed flow?

With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost_________?

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?

With increase in the temperature, viscosity of a liquid______?

With increase in temperature, the vapor pressure of liquids___________?

With a constant diameter impeller of a centrifugal pump _______?

Which of the following valves will incur maximum pressure drop for the same discharge of water ?

With diminishing cross-sectional area in case of subsonic flow in a converging nozzle, the______?

Which of the following relationship is valid for the equilibrium position of the float in a Rotameter? (Where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)?

Which of the following produces maximum pressure difference for transportation of gases ?

Which of the following pipe bends will incur the largest head loss ?

Which of the following two quantities when same, makes one pipe system equivalent to another pipe system ?

While starting an axial flow pump, its delivery valve should be kept ________?

Which of the following may be termed as a variable orifice flow-meter ?

With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity_____?

Which of the following is used for pumping crude oil from oil well ?

While starting a centrifugal pump, its delivery valve should be kept_____?

With increase in the shear rate, the apparent viscosity of pseudo-plastic fluids___________?