Questions in Mechanical Properties of Fluids

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	An incompressible liquid flows through a horizontal tube as shown in the following fig. Then the velocity v of the fluid is
	Water enters through end A with speed ${{v}_{1}}$ and leaves through end B with speed ${{v}_{2}}$ of a cylindrical tube AB. The tube is always completely filled with water. In case I tube is horizontal and in case II it is vertical with end A upwards and in case III it is vertical with end B upwards. We have ${{v}_{1}}={{v}_{2}}$ for
	Water is moving with a speed of 5.18 m/s through a pipe with a cross-sectional area of 4.20 $cm^2$. The water gradually descends 9.66 m as the pipe increase in area to 7.60 $cm^2$. The speed of flow at the lower level is
	The velocity of kerosene oil in a horizontal pipe is 5 m/s. If $g=10m/{{s}^{2}}$ then the velocity head of oil will be
	In the following fig. is shown the flow of liquid through a horizontal pipe. Three tubes A, B and C are connected to the pipe. The radii of the tubes A, B and C at the junction are respectively 2 cm, 1 cm and 2 cm. It can be said that the
	A manometer connected to a closed tap reads $3.5 imes 10^5$ N/m2. When the valve is opened, the reading of manometer falls to $3.0 \times 10^5 N/m^2$, then velocity of flow of water is
	Air is streaming past a horizontal air plane wing such that its speed in 120 m/s over the upper surface and 90 m/s at the lower surface. If the density of air is 1.3 kg per $metre^3$ and the wing is 10 m long and has an average width of 2 m, then the difference of the pressure on the two sides of the wing of
	A large tank filled with water to a height $h$ is to be emptied through a small hole at the bottom. The ratio of time taken for the level of water to fall from $h$ to $\frac{h}{2}$ and from $\frac{h}{2}$ to zero is
	A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in m/s) through a small hole on the side wall of the cylinder near its bottom is
	There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm (1 atm = $10^5N/m^2$) then the velocity of water flowing from hole is

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