Fluid mechanics
Previous year question paper with solutions for Fluid mechanics Dec-2018
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Question paper 1
SECTION-A
Q1. a) Fill in the blanks.
i. A __________fluid is one that is incompressible and has no viscosity
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Read moreii. Specific gravity is also called __________
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Read moreiii. __________is measure of resistance of relative translation motion of adjacent layer.
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Read moreiv. __________is that branch of hydraulics which deals with water at rest.
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Read morev. The point where total pressure acts is known as __________
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Read morevi. Peizometer measures __________pressure.
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Read morevii. Dead weight pressure gauge is used to __________pressure gauge.
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Read moreviii. In laminar flow, Reynolds’s number is __________
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Read moreix. Hydraulic pumps converts__________ energy into hydraulic energy.
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Read morex. Reciprocating pump is a type of __________
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Read moreb) State True or False.
xi. Density of fluid is the ratio of mass of fluid to its volume.
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xii. Viscosity is not a measure of resistance to relative translation motion of adjacent layer.
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xiii. The pressure which is below the atmospheric is called vacuum pressure.
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xiv. Laminar flow is regular, smooth and systematic.
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xv. Centrifugal pump works on the principal of forced vortex flow.
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SECTION-B
Q2. Attempt any six questions.
a. Define Pascal’s law and what is its application?
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Read moreb. Define Total pressure, resultant pressure and pressure head.
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Read morec. Write a short note on
i) Simple manometer ii) Differential manometer
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d. Differentiate between steady and unsteady flow.
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Read moree. Differentiate between uniform and non uniform flow
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Read moref. Find the discharge of water flowing through a rectangular notch of 4m length when constant head over notch is 200 mm. Take Cd =0.65?
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Read moreg. Define an Orifice and mouthpiece .What is the difference between the two?
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Read moreh. State the condition for the following section to be most economical
i) Rectangular section ii) Trapezoidal section
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SECTION-C
Q3. Attempt any three questions.
i. What are the losses in pipelines? Explain minor and major loses.
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Read moreii. Explain in detail the hydraulic gradient line and total energy line by showing its diagram.
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iii. Describe in detail water hammer phenomenon and its effect.
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Read moreiv. Define Bernoulli’s theorem. Explain its assumptions and limitations.
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Read morev. A rectangular channel has a cross-sectional area of 72m2 . Calculate the discharge through the most economical section, when the bed slope is 1 in 1500 and C=55.
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