USN 4) o ! E1 o C) E9 -y. 6 ^^l =oo o- -o -.E , ::L v5 (.) = 4x O() -9 bot ,6 E:] J 'ia oi= = :'i o" 6. o'" o-i ''''lt \ 10cv35 Max. Marks:100 (10 Marks) (06 Marks) (06 Marks) an oil of specific gravity 0.9 (08 Marks) ",,*.Fr:,= ! ifhq 3 hrs. ,,. ._,"rt I m* Third Semester B.E. Degree Examinationo June/July 2014 Fluid Mechanics Note: Answer any FIVEfull questions, selecting atleast TWO questions from each part. PART _ A a. Defini'ihA.following fluid properties with units: i) MbSi.density. ii) SpecifiCgravity. iii) Dynamicviscosity. iv) Vapour pressure. v) Capillarity. b. A 150mm diameter Vefiical cylinder rotates conCentrically inside another cylinder of diameter 151.0mm. Both cylinders are 250mm high. The space between the cylinders is filled with a liquid whose viscosity is unknown. If a torque of 12 N-m is required to rotate the inner cylinder at 100rpm. Detbrmine the viscosity of the fluid. (10 Marks) a. b. c. ! State and prove Pascal's law. ,.. i.tt With neat sketch, explain Bourdon's piessgre gauge. An open tank contains water upto a depth of lm and above it for a depth of 1m. Find the preisure intensiry i) At the interface of the lwo liquids and ii) At the bottom of tfu"tank. a. Define: i) Total ptqSpui.; ii) Centre of pressure (04 Marks) b pbtain an expression for total pressure and centers of pressure for inclined surface submerged in,liquid (08 Marks) c. A trapezoidai'channel 2m wide at the bottom and 1m deep has side ilopes 1 :1. Determine: i)rotat.pre'sSure;ii)Centreofpressure,whenitisfullofwater. arE := I H ,..,,*,"' ,, (04 Marks) A F . 6',,. Obtain an expression for continuity equation for tluee dimensional flows. (08 Marks) >,= ry$ ,*... Ifforatwodimensional potential flow,thevelocitypotential isgivenbV0:x(2y-1). e; ;) Determine the velocity at the point P(4. 5). Determine also the value of stream lunction rq at 5 i ; the point P. (08 Ntart<s) . PART _B Derive Bernoulli's equation from Euler's equation with assurnptions made. (0s Marks) Derive the equation for the discharge through venturimeter. (06 Marks) Water is flowing through a pipe having diameter 300mm and 200mm at the bottom and upper end respectively. The intensity o^f pressure at the bottom end is 24.52 N/cm2 and the pressure at the upper end is 9.81 N/cm2. Determine the difference in datum head if the flow a ->r \J< * c.] ;5a. tD. ui !9. o o. through pipe is 40/ps. I of2 (06 Marks) www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP

Fr:,= ifhq FIVEfull · 10cv35 Max. Marks:100 (10 Marks) (06 Marks) (06 Marks) an oil of specific gravity 0.9 (08 Marks) ",,.Fr:,=! ifhq 3 hrs.,,. ._,"rt I m Third Semester B.E

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Page 1: Fr:,= ifhq FIVEfull · 10cv35 Max. Marks:100 (10 Marks) (06 Marks) (06 Marks) an oil of specific gravity 0.9 (08 Marks) ",,*.Fr:,=! ifhq 3 hrs.,,. ._,"rt I m* Third Semester B.E

USN

4)o

E1oC)

-y.

6^^l=oo

o--o-.E ,::Lv5(.)

4xO()

-9

bot

,6E:] J

'iaoi=

= :'io" 6.o'"o-i

''''lt \

10cv35

Max. Marks:100

(10 Marks)

(06 Marks)(06 Marks)

an oil of specific gravity 0.9

(08 Marks)

",,*.Fr:,=

! ifhq 3 hrs.,,. ._,"rt

I m*

Third Semester B.E. Degree Examinationo June/July 2014Fluid Mechanics

Note: Answer any FIVEfull questions, selectingatleast TWO questions from each part.

PART _ Aa. Defini'ihA.following fluid properties with units:

i) MbSi.density.ii) SpecifiCgravity.iii) Dynamicviscosity.iv) Vapour pressure.v) Capillarity.

b. A 150mm diameter Vefiical cylinder rotates conCentrically inside another cylinder ofdiameter 151.0mm. Both cylinders are 250mm high. The space between the cylinders isfilled with a liquid whose viscosity is unknown. If a torque of 12 N-m is required to rotatethe inner cylinder at 100rpm. Detbrmine the viscosity of the fluid. (10 Marks)

State and prove Pascal's law. ,.. i.tt

With neat sketch, explain Bourdon's piessgre gauge.An open tank contains water upto a depth of lm and above itfor a depth of 1m. Find the preisure intensiryi) At the interface of the lwo liquids andii) At the bottom of tfu"tank.

a. Define: i) Total ptqSpui.; ii) Centre of pressure (04 Marks)b pbtain an expression for total pressure and centers of pressure for inclined surface

submerged in,liquid (08 Marks)c. A trapezoidai'channel 2m wide at the bottom and 1m deep has side ilopes 1 :1. Determine:

i)rotat.pre'sSure;ii)Centreofpressure,whenitisfullofwater.

arE

:=I H ,..,,*,"' ,, (04 Marks)A F . 6',,. Obtain an expression for continuity equation for tluee dimensional flows. (08 Marks)>,=ry$ ,*... Ifforatwodimensional potential flow,thevelocitypotential isgivenbV0:x(2y-1).e; ;) Determine the velocity at the point P(4. 5). Determine also the value of stream lunction rq at

5 i ; the point P. (08 Ntart<s)

. PART _BDerive Bernoulli's equation from Euler's equation with assurnptions made. (0s Marks)Derive the equation for the discharge through venturimeter. (06 Marks)Water is flowing through a pipe having diameter 300mm and 200mm at the bottom andupper end respectively. The intensity o^f pressure at the bottom end is 24.52 N/cm2 and thepressure at the upper end is 9.81 N/cm2. Determine the difference in datum head if the flow

a->r\J<* c.]

;5a.tD.ui!9.

oo.

through pipe is 40/ps.I of2

(06 Marks)