Download AKTU B-Tech 3rd Sem 2016-2017 NCS 301 Data Structures Using C Question Paper

Code: 20A03301

B.Tech II Year I Semester (R20) Regular Examinations November 2021

FLUID MECHANICS

(Civil Engineering)

Time: 3 Hours

Max. Marks: 75

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Note: 1. Question Paper consists of two parts i.e., Part-A and Part-B.

2. Part-A contains 10 Multiple Choice Questions of 1.5 mark each.

3. Part-B contains 5 Questions carrying 12 marks each.

PART-A

1. Answer all the following questions.

1. The property of a fluid which determines its movement under shear stress is known as:

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   1. Viscosity
   2. Surface tension
   3. Capillarity
   4. None of the above

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2. The rise or depression of liquid in a tube due to surface tension with increase in the size of the tube will:

   1. Increase
   2. Decrease
   3. Remain unaffected
   4. Depend on the characteristics of the liquid

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3. Piezometer is used to measure:

   1. Pressure difference between two points
   2. High pressure
   3. Static pressure

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   4. Very low pressure

4. The resultant upward pressure of a fluid on an immersed body is called:

   1. Upthrust
   2. Buoyancy

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   3. Centre of pressure
   4. None of the above

5. The line of action of the buoyant force acts through the:

   1. Centroid of the displaced volume of fluid

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   2. Centre of gravity of the floating body
   3. Metacenter
   4. Centre of pressure

6. The flow in a pipe is laminar if the Reynolds number is:

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   1. Less than 2000
   2. Between 2000 and 4000
   3. More than 4000
   4. None of the above

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7. The Bernoulli’s equation is based on the principle of conservation of:

   1. Mass
   2. Momentum
   3. Energy
   4. None of the above

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8. The minor loss due to sudden contraction in a pipe is due to:

   1. Skin friction
   2. Separation of boundary layer
   3. Vortex formation

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   4. None of the above

9. A notch is used for measuring:

   1. Velocity
   2. Flow

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   3. Pressure
   4. Viscosity

10. The value of coefficient of discharge ($C_d$) for a venturimeter is:

    1. 0.6-0.7

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    2. 0.7-0.8
    3. 0.8-0.9
    4. 0.95-0.99

PART-B

Answer all the following questions. Each question carries 12 Marks.

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1. A 100mm diameter shaft slides vertically in a 200mm diameter sleeve. The space between the shaft and sleeve is filled with oil of viscosity 2 poise. Find the force required to pull the shaft at a constant velocity of 0.2 m/s.

   OR

   Explain about different types of fluids.

2. Derive the expression for total pressure and centre of pressure for a vertically immersed plane surface.

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   OR

   A solid cylinder of diameter 4m has a height of 3m. Find the meta-centric height of the cylinder, if the specific gravity of the material of cylinder is 0.6.

3. Derive Euler's equation of motion along a stream line and hence derive Bernoulli's theorem.

   OR

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   Explain different types of flow with neat sketches.

4. Derive the expression for loss of head due to sudden enlargement.

   OR

   Explain about hydraulic gradient line and total energy line.

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5. Derive an expression for discharge through a rectangular notch.

   OR

   Explain about venturimeter with a neat sketch.

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Important Note: These questions are for practice purpose. Refer FirstRanker.com for latest previous question papers.