Physics
Fluid-Mechanics
Easy
Question
There is a hole in the bottom of tank having water. If total pressure at bottom is 3 atm 
then the velocity of water flowing from hole is
- None
The correct answer is:
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Physics
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 
; and it takes T2 time to take out the rest of water. If T1=T2, then the value of 
is
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 ; and it takes T2 time to take out the rest of water. If T1=T2, then the value of is
PhysicsFluid-Mechanics
Physics
Column I Shows the Bernoulli's equation in the different forms. Column II lists certain units each of which pertains to one of the possible forms of the equation..
(where z is ratio of height to volume)
Now match the given columns and select the correct option from the codes given below. Codes
Column I Shows the Bernoulli's equation in the different forms. Column II lists certain units each of which pertains to one of the possible forms of the equation..
(where z is ratio of height to volume)
Now match the given columns and select the correct option from the codes given below. Codes
PhysicsFluid-Mechanics
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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 
.
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 .
PhysicsFluid-Mechanics
Physics
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
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
PhysicsFluid-Mechanics
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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?
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?
PhysicsFluid-Mechanics
Physics
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
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
PhysicsFluid-Mechanics
Physics
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).
PhysicsFluid-Mechanics
Physics
A manometer connected to a closed tap reads 
. When the valve is opened, the reading of manometer falls to 
, then velocity of flow of water is
A manometer connected to a closed tap reads . When the valve is opened, the reading of manometer falls to , then velocity of flow of water is
PhysicsFluid-Mechanics
Physics
The speed of flow past the lower surface of a wing of an aeroplane is 50 ms-1. What speed of flow over the upper surface will give a dynamic lift of 1000 Pa? Density of
air
.
The speed of flow past the lower surface of a wing of an aeroplane is 50 ms-1. What speed of flow over the upper surface will give a dynamic lift of 1000 Pa? Density of
air.
PhysicsFluid-Mechanics
Physics
Figure shows an ideal fluid flowing through a uniform cross-sectional tube in the vertical tube offers no resistance to fluid with liquid velocities 
and pressure 
. Knowing that tube flow then which of the following is true.
Figure shows an ideal fluid flowing through a uniform cross-sectional tube in the vertical tube offers no resistance to fluid with liquid velocities and pressure . Knowing that tube flow then which of the following is true.
PhysicsFluid-Mechanics
Physics
Consider ideal flow of water through a pipe with its axis horizontal. A and B are the two points in the same horizontal level (A lies on the upstream), then
Consider ideal flow of water through a pipe with its axis horizontal. A and B are the two points in the same horizontal level (A lies on the upstream), then
PhysicsFluid-Mechanics
Physics
A broad pipe having a radius 10 cm branches into two pipes of radii, 5 cm and 3 cm. If the velocity of flowing water in the pipe of radius 3 cm be 5 cm/s, determine the velocities of water in the remaining two pipes. Given that the rate of discharge through the main branch, is 
.
A broad pipe having a radius 10 cm branches into two pipes of radii, 5 cm and 3 cm. If the velocity of flowing water in the pipe of radius 3 cm be 5 cm/s, determine the velocities of water in the remaining two pipes. Given that the rate of discharge through the main branch, is .
PhysicsFluid-Mechanics
Physics
An incompressible liquid travels as shown in fig. The speed of the fluid in the lower branch will be
An incompressible liquid travels as shown in fig. The speed of the fluid in the lower branch will be
PhysicsFluid-Mechanics
Physics
Water from a tap emerges vertically downwards with an initial velocity V0. Assume pressure is constant throughout the stream of water and the flow is steady. Find the distance from the tap at which cross area of stream is half of the cross-sectional area of stream at the tap.
Water from a tap emerges vertically downwards with an initial velocity V0. Assume pressure is constant throughout the stream of water and the flow is steady. Find the distance from the tap at which cross area of stream is half of the cross-sectional area of stream at the tap.
PhysicsFluid-Mechanics
Physics
The tube shown in figure is of uniform cross-section. Liquid flows through it at a constant speed in the direction shown by arrows. Then the liquid exerts on the tube is:
The tube shown in figure is of uniform cross-section. Liquid flows through it at a constant speed in the direction shown by arrows. Then the liquid exerts on the tube is:
PhysicsFluid-Mechanics
