Fluid Mechanics

721.With increase in the shear rate, the apparent viscosity of pseudo-plastic fluids

1. Increases
2. Decreases
3. Remain same
4. May increase or decrease; depends on the magnitude of shear rate

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722.With increase in the temperature, viscosity of a liquid

1. Increases
2. Decreases
3. Remain constant
4. May increase or decrease; depends on the liquid

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

1. Monotonically decreases
2. Decreases and then increases
3. Remains constant
4. Increases and then decreases

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

1. Decreases
2. Increases linearly
3. Increases exponentially
4. Remain constant

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725.Working of a _________ pump characterises mixed flow.

1. Turbine
2. Piston
3. Diaphragm
4. None of these

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726.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.

1. Small differential
2. Atmospheric
3. Absolute
4. Gage

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