KTU B.Tech S4 Model Questions FLUID MECHANICS II
KTU B.Tech S4 model Questions for FLUID MECHANICS II
MODEL QUESTION PAPER Prepared by ktubtechquestions.com
FOURTH SEMESTER B.TECH DEGREE EXAMINATION
May/June 2017
CE206 FLUID MECHANICS II
Time: 3 Hrs Marks: 100
PART A
( Answer any two )

a) Distinguish between a Kaplan and a Propeller turbine. (5 Marks)
b) Define specific speed of a centrifugal pump ? Derive the formula.(10 Marks)

a) What is meant by priming in centrifugal pumps ?(5Marks)
b)Why a Pelton Wheel is suitable for high heads only ? (10 Marks)
3. a) A Pelton Wheel is required to develop 6 MW when working under a head of 300 m. It rotates with a speed of 550 rpm. Assuming jet ratio as 10 and overall efficiency as 85%, find
i) Diameter of wheel
ii) Quantity of water required and
iii) Number of jets. Assume suitable values for the velocity coefficient and the speed ratio(10 Marks)
b)How does power output and torque on the shaft of a Pelton Wheel vary with bucket speer ?(5 Marks)
PART B
(Answer any two)
4 a)Derive from first principles, Chezy’s formula for loss of head due to friction in a pipe. (10 Marks)
b) Compare open channel flow and pipe flow .(5 Marks)
5. a) A trapezoidal channel has side slopes of 3 horizontal to 4 vertical and the slope of its bed is 1 in 2000. Determine the optimum dimensions ( or most economical dimensions) of the channel, if it is to carry water at 0.5m3/s. Take chezy’s constants as 80.(5 Marks)
b) Derive the conditions for maximum velocity through circular channels.(5 Marks)
c) Write down the fundamental equations for uniform flow computations.(5 Marks)

a)Explain uses of hydraulic jump(5 Marks)
b) Write a short note on Specific energy & Specific force(5 Marks)
c) Define
i) critical depth
ii) Section factor for critical flow.
PART C
(Answer any One two)
7 a) Explain the characteristics of surface profiles in prismatic (10 Marks)
b)Explain gradually varied flow dynamic equation (10 Marks)
8 a) Explain Rayleigh method (10 Marks)
b) Explain Reynold’s and Froude model laws (10 Marks)
9 a) Explain the Concepts of distorted and undistorted models(10 Marks)
b)Explain Buckingham method(10 Marks)
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KTU B.Tech S4 Model Questions FLUID MECHANICS II
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