Fluid mechanics
Previous year question paper with solutions for Fluid mechanics Dec-2017
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Question paper 1
SECTION-A
Q1. a) Fill in the blanks. i. Ideal fluids are also known as__________.
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ii. Specific gravity of water is________.
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iii. According to _______the pressure at a point in a fluid at rest is same in all directions.
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iv. Piezometer measures _______ pressure only.
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v. Atmosphere pressure at sea level is ______mm of mercury.
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vi. Venturimeter is used to measure ______ of flow.
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vii. Laminar flow is also called _________flow.
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viii. The pipe running partially full behaves like________.
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ix. Pumps convert mechanical energy into_______.
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x. In pipe flow maximum velocity occurs at the _______of pipe section.
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b) State True or False.
xi. All liquids and gases are known as fluids.
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xii. Water is more viscous than glycerine.
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xiii. Continuous discharge is obtained through reciprocating pump than centrifugal pump.
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xiv. Hydraulic jump occurs on upstream side of dam.
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xv. Water flows through pipeline under pressure.
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SECTION-B
Q2. Attempt any six questions.
a. Define Capillarity and surface tension.
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Read moreb. Differentiate between gauge pressure and vacuum pressure.
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Read morec. Define Bernoulli’s theorem and write down its assumptions.
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Read mored. Write down the difference between Orifice and Notch.
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Read moree. What do you understand by most economical channel section? Write down conditions for Trapezoidal channel section to be most economical.
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Read moref. Differentiate between Laminar and Turbulent flow.
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Read moreg. Write down the difference between manometers and pressure gauges
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Read moreh. Differentiate between pipe flow and open channel flow.
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Read moreSECTION-C
Q3. Attempt any three questions.
i. Calculate the specific weight, mass density, specific volume, relative density of 5 litres of a liquid which weighs 25 N.
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Read moreii. A rectangular plate 6 metres long and 2 metres wide are immersed vertically in water in such a way that its 6 m side is parallel to water surface. Find total pressure and centre of pressure on plate if it’s top surface is 1 m below the free surface of water.
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iii. Explain pipe in series, an equivalent pipe and pipes in parallel combination. Write down the relationships for discharge and head loss.
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Read moreiv. The diameters of a pipe at sections 1-1 and 2-2 are 300 mm and 500 mm respectively. If the velocity of water flowing through pipe at section 1-1 is 5 m/s, find: Discharge through pipe, and velocity of water at section 2-2
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v. What is a reciprocating pump? Write down in detail about the main parts and working of single acting reciprocating pump along with neat sketch.
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