Properties of fluid

Fluid Mechanics (Set 1)


Multiple Choice Questions


1. When a body is placed over a liquid, it will sink down if




2. The property by virtue of which a liquid opposes relative motion between its different layers is called




3. A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.




4. Euler's dimensionless number relates the following




5. When a body floating in a liquid, is displaced slightly, it oscillates about




6. The pressure of the liquid flowing through the divergent portion of a Venturimeter




7. When the Mach number is between __________ the flow is called super-sonic flow.




8. In an immersed body, centre of pressure is




9. A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

image image


10. The torque required to overcome viscous resistance of a collar bearing is (where R1 andR2 = External and internal radius of collar)