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06ME46BFourth Semes ter B.E . Degree Examina tio n, Dec 08 / .Jan 09

Fluid MechanicsTime 1 hr.,. Ma x MarksIOO

Nul c : A u:.wer FIVE f l l l l fJ III!Sf ious, t i f l (l f/ea.\1 TWOfJIIestiou .v from eacll pa r i.

PARI - Aa. Dtfti:rcntiatc between : i) : \ c \ ~ 1 o n i a n and 1'\on-Ncwtonian fluids. ii) !deal and RealVapour pressure and

(OR Mark.\)tluids. iii) D)namic and Kinematic 'iscosity of flunh iv)ca\ it;tlton

b. Derive an expression l(u capillary rise in water (04 Marks)c. A cubical block of sides Im ami weighing 350N slides dov:n an inclined plane with J

unil(>ml velocity of l.S m/s. The inc lined ~ n c is !tual and has an oillilm ol l.Omm thickness. C'ulcuhttc the dynomic viscosity of oil.(08 M a r k ~ )

2 a. l'rmc that the centre of pressure lies belo\\ the ccmrc or gra\ ity of a venic:llly immersedpl.mc surface in a Sl

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S a. Derive F u l c r ' . ~ equation of motion along