GATE ME
Fluid Mechanics
Fluid Dynamics
Previous Years Questions

## Marks 1

Navier Stoke's equation represents the conservation of
Bernoulli’s equation can be applied between any two points on a stream line for a rotational flow field.
In a venturimeter, the angle of the diverging section is more than that of converging section.
Shown below are three pipe sections through which water flows as shown. Option $$(a)$$ to $$(d)$$ below pertain to the direction of the net force on t...
In a band operated liquid sprayer (figure shown below) the liquid from the container rises to the top of the tube because of : ...

## Marks 2

The arrangement shown in the figure measures the velocity $$V$$ of a gas of density $$1kg/{m^3}$$ flowing through a pipe. The acceleration due to grav...
A $$60$$ $$mm$$ $$-$$ diameter water jet strikes a plate containing a hole of $$40mm$$ diameter as shown in the figure. Part of the jet passes through...
The water jet exiting from a stationary tank through a circular opening of diameter $$300$$ $$mm$$ impinges on a rigid wall as shown in the figure. Ne...
A Prandtl tube (Pitot-static tube with $$C=1$$) is used to measure the velocity of water. The differential manometer reading is $$10$$ mm of liquid co...
Water $$\left( {\rho = 1000kg/{m^3}} \right)$$ flows through a venturimeter with inlet diameter $$80$$ $$mm$$ and throat diameter $$40$$ $$mm.$$ The ...
A siphon is used to drain water from a large tank as shown in the figure below. Assume that the level of water is maintained constant. Ignore friction...
An ideal water jet with volume flow rate of $$0.05{m^3}/s$$ strikes a flat plane placed normal to its path and exerts a force of $$1000N.$$ Considerin...
Water is coming out from a tap and falls vertically downwards. At the tap opening, the stream diameter is $$20$$ $$mm$$ with uniform velocity of $$2$$...
A large tank with a nozzle attached contains three immiscible, inviscid fluids as shown. Assuming that the changes in $${h_1},\,\,{h_2}$$ and $${h_3}... Figure shows the schematic for the measurement of velocity of air (density$$ = 1.2\,\,kg/{m^3}$$) through a constant -area duct using a Pilot tube a... A smooth pipe of diameter$$200mm$$carries water. The pressure in the pipe at section$${S_1}\,\,$$(elevation :$$10m$$) is the$$50$$... Consider steady, incompressible and irrotational flow through a reducer in a horizontal pipe where the diameter is reduced from$$20cm$$to$$10cm.$$... A venturimeter of$$20mm$$throat diameter is used to measure the velocity of water in a horizontal pipe of$$40mm$$diameter. If the pressu... A$$U$$-tube manometer with a small quantity of mercury is used to measure the static pressure difference between two locations$$A$$and$$B$$in a c... Air flows through a venture and into atmosphere. Air density is$$\rho $$; atmospheric pressure is$$'\,{P_a}';$$throat diameter is exit diameter is... A water container is kept on a weighing balance. Water from a tap is falling vertically into the container with a volume flow rate of$$'Q'$$; the vel... Water flows through a vertical contraction from a pipe of diameter$$d$$to another of diameter$$d/2$$(see Figure). The flow velocity at the inlet ... A jet of water issues from a Nozzle with a velocity$$20m/s$$and it impinges normally on a flat plate moving away from it at$$10\,m/s.$$The cr... Water flows through a pipe of diameter$$0.30m.$$What would be the velocity$$V$$for the conditions shown in the figure below? ... A mercury manometer is attached to a section of the pipe shown in the figure. Mercury levels are indicated when there is no water flowing through the ... ## Marks 3 When a Pitot-static tube is immersed in a water stream (density$${\rho _w}$$), the differential head measured by a mercury (density$${\rho _m}$$man... ## Marks 5 Water$$\left( {\rho = 1000\,\,kg/{m^3}} \right)$$flows horizontally through a nozzle into the atmosphere under the conditions given below. (assume ... A Venturimeter (throat diameter$$=10.5cm$$) is fitted to a water pipe line (internal diameter$$=21.0cm$$) in order to monitor flow rate. T... A jet of water with a velocity$${V_1}$$(Figure shown below) and area of cross-section$${A_1}$$enters a stream of slow moving water in a pipe of ar... In a syringe as shown in the figure, a piston of$$1\,\,c{m^2}$$cross section is pushed at a constant speed of$$10\,\,cm/s$$to eject water through ... A jet of water (area$${A_j},$$velocity$${V_j},$$density$$\rho $$) impinges horizontally on a curved vane which deflects the jet through$${60^0}...
Consider the saline drip bottle shown. If $$\rho$$ is the density of saline, find (a) Pressure at $$A,$$ (b) The velocity of flow of saline through t...
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