Download AKTU B-Tech 7th Sem 2016-2017 NME 701NPL 701 Computer Aided Design Question Paper

Code: 20A03301

B.Tech II Year I Semester (R20) Supplementary Examinations December 2023

FLUID MECHANICS AND HYDRAULIC MACHINERY

(Mechanical Engineering)

Time: 3 hours

Max. Marks: 75

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Answer any 5 of the following questions. All questions carry equal marks.

1. Define fluid mechanics. Explain the properties of fluid in detail.

2. Derive Euler’s equation of motion along a stream line and hence obtain Bernoulli’s equation, stating clearly the assumption made.

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3. Explain the terms:

   1. Hydraulic gradient line
   2. Total energy line
   3. Pipe in series and parallel

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4. What do you understand by dimensional homogeneity? Explain its uses with suitable examples.

5. A Pelton wheel is to be designed for the following specifications: Shaft power = 11,772 kW; Head = 380 meters; Speed = 750 r.p.m.; Overall efficiency = 86%; Jet ratio = 6; Assume speed ratio as 0.45 and C_v = 0.98.

   Determine:

   1. The wheel diameter,

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   2. The jet diameter,
   3. The number of jets required.

6. Explain the function of a draft tube. Describe with neat sketch different types of draft tubes.

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7. Define specific speed of a turbine. Derive expressions for the specific speeds of turbine.

8. Write short notes on the following:

   1. Centrifugal pump
   2. Reciprocating pump

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