KL Deemed to be University General Fluid mechanics ce-214 model question papers

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Posted Date: 01 Apr 2013      Posted By:: Jeya Priya    Member Level: Gold  Points: 5 (₹ 4)

2011 KL Deemed to be University General B.Tech Fluid mechanics ce-214 Question paper

Course: B.Tech   University/board: KL Deemed to be University

Are you looking for the old question papers of K L University FLUID MECHANICS CE-214 ? Here is the previous year question paper from K L University. This is the original question paper from the FLUID MECHANICS CE-214 first semester exam conducted by K L University in year 2011. Feel free to download the question paper from here and use it to prepare for your upcoming exams






Time: 3 Hrs Max. Marks: 60

Answer One Question from each unit

Answer All Units


1.a) Enunciate Newtons Law of Viscosity and distinguish between Newtonian and non-Newtonian fluids. (6 M)

b) A cylinder of 150 mm radius rotates concentrically inside a fixed cylinder of 155 mm radius. Both cylinders are 300 mm long. Determine the viscosity of the liquid, which fills the space between the cylinders if a torque of 0.98 N-m is required to maintain an angular velocity of 60 r.p.m. (6 M)


2.a) The right limb of a simple U-tube manometer containing mercury is open to the atmosphere while the left limb is connected to a pipe in which a fluid of specific gravity 0.9 is flowing. The centre of the pipe is 12 cm below the level of mercury in the right limb. Find the pressure of fluid in the pipe if the difference of mercury level in the two limbs is 20 cm. (6 M)

b) Derive an expression for the depth of centre of pressure from free surface of liquid of an vertical plane surface submerged in the liquid (6 M)


3.a) What is Buoyancy? Explain the terms centre of buoyancy and metacentre. (6 M)

b) What are the conditions of equilibrium of a floating body and a submerged body?

(6 M)


4.a) If for a two-dimensional potential flow, the velocity potential is given by

= x (2y 1)

Determine the velocity at the point P (4,5). Determine also the value of stream function at the point P. (6 M)

b) An open circular cylinder of 15 cm diameter and 100 cm long contains water up to a height of 80 cm. Find the maximum speed at which the cylinder is to be rotated about its vertical axis so that no water spills. (6 M)


5.a) Derive the Bernoullis equation from fundamentals.

= constant

State the assumptions made in the derivation of equation. (6M)

b) An oil of specific gravity 0.8 is flowing through a venturimeter having inlet diameter 20 cm and throat diameter 10 cm. The oil-mercury differential manometer shows a reading of 25 cm. Calculate the discharge of oil through the horizontal venturimeter. Take Cd = 0.98 (6 M)


6.a) Define displacement thickness. Derive an expression for the displacement thickness (6 M)

b) Find the displacement thickness, the momentum thickness and energy thickness for the velocity distribution in the boundary layer given by

(6 M)


7.a) What are the different types of coefficients of orifice and explain them. (6 M)

b) Water discharge at the rate of 98.2 litres/sec through a 120 mm diameter vertical sharp-edged orifice placed under a constant head of 10 meters. A point, on the jet, measured from the vena-contracta of the jet has co-ordinates 4.5 meters horizontal and 0.54 meters vertical. Find the coefficients Cv, Cc and Cd of the orifice. (6 M)


8. a) Explain the classification of Notches and Weirs. (6 M)

b) Find the discharge of water flowing over rectangular notch of 3 m length when the constant head of water over the notch is 40 cm. Take Cd = 0.6. (6 M)


9. a) Derive the Darcy-Weisbach equation

for computing loss of head due to friction in pipes (6 M)

b) Explain the classification of loss of energy in pipes. (6 M)


10. a) What is Hagen Poiseuilles formula? Derive an expression for Hagen Poiseuilles formula. (6 M)

b) Water is flowing through a rough pipe of diameter 500 mm and length 4000 m at the rate of 0.5 m3/s. Find the power required to maintain this flow. Take the average height of roughness as k = 0.4 mm. (6 M)


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