Fluid mechanics
Previous year question paper with solutions for Fluid mechanics May-2018
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Question paper 1
SECTION-A
Q1. a) Fill in the blanks.
i. The pipe running partially full behaves likes an ......................
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Read moreii. Vacuum pressure is also called _____________
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Read moreiii. The ratio of inertia force to viscous force is known as ____________
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Read moreiv. Bar is the unit of ___________
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v. Loss of head at the exit of pipe is given as _____________
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vi. Pitot tube is used to measure the_______ of stream at a particular depth.
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Read morevii. An ideal fluid is that which has no ___________
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viii. In an open channel water flows under ___________
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ix. Piezometer is used to measure the ____________
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x. The sheet of water flowing through a notch is known as ____________
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b) State True or False.
xi. Stoke is the unit of kinematic viscosity.
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xii. Specific volume is the reciprocal of mass density.
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xiii. Hydrostatic pressure is the pressure of water at rest.
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xiv. The pressure intensity does not vary with depth of liquid.
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xv. Reciprocating pumps are also called negative displacement pumps
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SECTION-B
Q2. Attempt any six questions.
a. Explain the entrance and exit losses in a pipe
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Read moreb. Define an economical section, hydraulic mean depth and wetted perimeter
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Read morec. State Bernoulli's theorem and its applications.
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Read mored. Explain the continuity equation of flow
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Read moree. Write a short note on differential monometer.
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Read moref. Explain the total energy line and hydraulic gradient line
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Read moreg. Explain the differences between an orifice and mouthpiece.
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Read moreh. Differentiate between real fluids and ideal fluids.
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Read morei. Explain the concept of Water Hammer.
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Read moreSECTION-C
Q3. Attempt any three questions.
i. Calculate the mass density, specific weight and specific gravity of one litre of liquid which weighs 9 N.
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Read moreii. A triangular plate of base 3 m and height 4 m lies immersed vertically in water with the apex downward. The base of plate is 1 m below the free water surface. Determine the total pressure and center of pressure.
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Read moreiii. Calculate the flow of water in liters/hour through a 40x15 cm venturimeter when differential gauge connected to the inlet end of the meter and its throat shows 25 cm o of mercury. Assume the discharge coefficient as 0.98.
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Read moreiv. A differential manometer connected at two points A and B in a pipe containing an oil of specific gravity 0.8 shows a difference in mercury levels as 15 mm. Determine the difference in pressure at the two points in terms of head of water
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Read morev. A rectangular channel has a cross section of 8 m2 .Find the discharge and size through the most economical section. If the bed slope is 1 in 1000 .Take c=55
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