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Fluid-Mechanics
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A liquid of density 800 kg m-3 is filled in a tank open at the top. The pressure, of the liquid, at the bottom of the tank is 6.4 atmospheres. The velocity of efflux through a hole at the bottom is 
The correct answer is:
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A large tank is filled with water to a height H. A small hole is made at the base of the tank. It takes time to decrease the height of water to 
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(where z is ratio of height to volume)
Now match the given columns and select the correct option from the codes given below. Codes
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A Pitot tube is shown in figure. Wind blows in the direction shown. Air at inlet A is brought to rest, whereas its speed just outside of opening B is unchanged. The U tube contains mercury of density 
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.
A Pitot tube is shown in figure. Wind blows in the direction shown. Air at inlet A is brought to rest, whereas its speed just outside of opening B is unchanged. The U tube contains mercury of density . Find the speed of wind with respect to Pitot tube. Neglect the height difference between A and B and take the density of air as .
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A liquid flows through a horizontal tube as shown in figure. The velocities of the liquid in the two sections, which have areas of cross-section A1 and A2 , are v1 and v2, respectively. The difference in the levels of the liquid in the two vertical tubes is h. Then
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A long cylindrical tank of radius 1 m is being filled by a pipe of radius 2 cm. The incoming water has a velocity of 1 m/s. The tank has a hole of radius 1 cm at the bottom. What is the height of water in the tank in steady state?
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A horizontal pipe line carries water in streamline flow. At a point where the cross-sectional area is 10 cm2 the water velocity is 1 ms-1 and pressure is 2000 Pa. The pressure of water at another point where the cross-sectional area is 5 cm2 is
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An L-shaped glass tube is immersed in a flowing liquid such that its opening is pointing against the currents. If the speed of flow is v,
.
Study following statement:
(i) The liquid in the tube rises to a level A
(ii) The liquid in the tube rises to the level B
(iii) The liquid in the tube rises to the level C
(iv) The magnitude of h is 
.
Choose the correct statement(s).
An L-shaped glass tube is immersed in a flowing liquid such that its opening is pointing against the currents. If the speed of flow is v,
.
Study following statement:
(i) The liquid in the tube rises to a level A
(ii) The liquid in the tube rises to the level B
(iii) The liquid in the tube rises to the level C
(iv) The magnitude of h is .
Choose the correct statement(s).
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