Q. An open tank contains water upto a depth of 350 cm and above it an oil of specific gravity 0.65 for a depth of 2.5 m. Find the pressure intensity at the extreme bottom of the tank.

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Q. The diameters of a small piston and a large piston of a hydraulic jack are 45 mm and 100 mm respectively.Force of 0.09 kN applied on smaller in size piston. Find load lifted by piston if smaller in size piston is 40 cm above the large piston. The density of fluid is 850 kg/m³.

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Q. If fluid is at rest in a container of a narrow mouth at a certain column height and same fluid is at rest at same column height in a container having broad mouth, will the pressure be different at certain depth from fluid surface.

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Q. We can draw Mohr’s circle for a fluid at rest.

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Q. Pressure intensity or force due to pressure gradient for fluid at rest is considered as which kind of force?

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Q. Calculate the hydrostatic pressure for water moving with constant velocity at a depth of 5 m from the surface.

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Q. Pressure distribution for fluid at rest takes into consideration pressure due to viscous force.

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Q. Barometer uses the principle of fluid at rest or pressure gradient for its pressure calculation.

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Q. The right limb of a simple U-tube manometer containing mercury is open to the atmosphere while the lift limb is connected to a pipe in which a fluid of specific gravity 0.85 is flowing. The centre of the pipe is 14 cm below the level of mercury in the right limb. Evaluate the pressure of fluid flowing in the pipe if the difference of mercury level in the two limbs is 22 cm.

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Q. A single coloumn manometer is connected to a pipe containing a liquid of specific gravity 0.75. Find the pressure in the pipe if the area of reservoir is 250 times the area of tube for the manometer reading. The difference in mercury level is 40 cm. On the left limb the fluid is upto the height of 20 cm.

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Q. A Differential manometer is connected at the points A and Bat the centre of two pipes. The pipe A(left limb) contains a liquid of specific gravity = 1.5 while pipe B (right limb)contains a liquid of specific gravity 0.85. The pressure at A and B are 0.5 kgf/cm² and 1.2 kgf/cm² respectively. Find the difference in level of mercuru in the differential manometer. A is 2.5m above B and 5 m above the mercury in its own limb. B is 2.5 m above the mercury level in limb A.

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Q. An inverted differential manometer is connected to two pipes A and B which covey water. The fluid in manometer is oil of specific gravity 0.75. For the manometer readings, find the pressure difference between A and B. Datum in left limb is 40 cm above point A. Point B is 60 cm below datum line. Difference in level of fluid is 20 cm.

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Q. In the inverted U-tube Differential manometer, how is the specific gravity of manometric fluid used relative to the fluid flowing in the pipes

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Q. Why is large reservoir used in single column manometer?

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Q. Manometers are the pressure measuring devices which use the principle of dynamic pressure to measure the pressure difference.

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Q. The distance moved by liquid will be more in which type of manometer?

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Q. Differential manometer gives the pressure reading with respect to atmospheric pressure.

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Q. Which device is popularly used for measuring difference of low pressure?

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Q. If the atmospheric pressure at sea level is 7.5 N/cm², determine the pressure at a height of 3000m assuming the pressure variation follows isothermal law. The density of air is given as 1.2 km/m³.

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Q. The barometric pressure at sea level is 760 mm of Mercury while that on a mountain top is 715 mm. If the density of air is assumed constant at 1.2 kg/m³ , what is the elevation of the mountain top?

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