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Roll No. ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ ‘ Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (Food Technology) (2018 Batch) (Sem.-3)
FLUID FLOW OPERATIONS AND RHEOLOGY
Subject Code : BTFT-304
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M.Code : 76992
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
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SECTION-A
Write briefly :
- Define Dynamic Viscosity. Convert 1 kg/s-m dynamic viscosity in poise.
- Differentiate between specific weight and specific volume of a fluid.
- Differentiate between absolute pressure and gauge pressure.
- State the assumptions made in the derivation of Bernoulli's equation.
- What is Viscous Flow?
- What are major energy losses in pipes? Mention one formula to calculate these losses.
- Enlist various methods of determination of the coefficient of viscosity of a liquid.
- What are Herchel-Bulkley fluids? Give examples.
- ¥ 0 =N kWD
- Differentiate between adhesiveness and springiness.
- Define Stokes law.
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SECTION-B
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- What is Manometer? Give classification of manometers. Distinguish between U tube manometer and single column manometer. Explain the working of anyone.
- Explain briefly the various heads and forces acting on a flowing fluid. Also give a brief discussion on equations of motion.
- What is a Pump? Explain the construction and working of a single stage centrifugal pump with line diagrams.
- To determine the flow of water a horizontal venturimeter having inlet and throat diameters 20 cm and 10 cm respectively is used. The differential manometer connected to the inlet and throat shows a reading of 20 cm of mercury. Assuming Cd = 0.98, what will be the flow rate of water?
- Oil of absolute viscosity 0.15 Ns/m2 and specific gravity 0.85 flows through a pipe of diameter 0.3 m. If the head loss in 3000 m length of pipe is 20 m and the flow is laminar, then find :
- The velocity of flow through the pipe
- Reynolds number
- Fanning friction factor
- Darcy friction factor.
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SECTION-C
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- Explains the generalized equation for the visco-elastic material. What is significance of plasticity of visco-elastic material? Differentiate between shear thinning and shear thickening fluids. Explain with suitable examples.
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- Explain Capillary Tube Viscometer with a neat sketch. Also derive an expression for the coefficient of viscosity measured by it:
- A capillary tube viscometer of diameter 40 mm is used to measure the viscosity of an oil of specific gravity 0.9. The difference of pressure head between two points 1.4 m apart is 0.4 m of water. If the mass of oil collected in a measuring tank is 50 kg in 100 seconds, then determine the viscosity of the oil.
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- Describe the factors affecting the rheological parameters.
- A pipe 1 m in diameter carrying water at a velocity of 4 m/s is branched into two pipes. The first branch is 0.6 m in diameter and it carries one-third of the water flow. If water flows in the second branch with a velocity of 3 m/s, then determine the flow velocity in the first branch pipe and the diameter of the second branch.
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Tech Question Papers 2020 December (All Branches)