BIT - III TOTAL PAGES:03BACHELOR IN TECHNOLOGY

(SEMESTER - III) (CIVIL)BSC3 - HYDRAULICS

TIME: 03 HOURS MAX. MARKS: 75GENERAL INSTRUCTIONS:

1. Question paper is divided into three groups2. Each group is of 25 marks each3. Figure to the right in bracket indicates mark4. Assume suitable data if necessary

GROUP A: Answer any three questions. Question No. 1 is compulsory.Q.1 Define following terms i) Density ii) Specific weight iii) Specific volume iv) Specific gravity v) Viscosity Q.2 State & explain Bernoulli’s Theorem for liquids Q.3 Explain coefficient of contraction, coefficient of velocity the coefficient

of Discharge , coefficient of resistance ?Q.4 Derive an expression for discharge through open channel by chery’s

formula ? Q.5 Explain various forms of energies in fluid flow ?

GROUP B: Answer any three questions. Question No. 6 is compulsory.Q.6 A pipe line which is 5m in diameter. Contains a gate valve. The pipe

contains oil of specific gravity 0.87 . The pressure at the centre of pipe is 2 kg /cm2. Find the force exerted by the oil upon the gate and the position of the centre of pressure?

Q.8 A pipe of diameter 300 mm and length 3500 m is used for the transmission of power by water. The total head at the inlet of pipe is

500 m. Find the maximum power available at the outlet of pipeIf the value of f = 0.006 ?

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(10)

(10)

(10)(10)

(10)

(10)

Q.9 A uniform body of size 3 m long x 2 m wide x 1 m deep floats in water. What is the weight of the body if depth of immersion is 0.8 m ? Determine meta centric height ?

Q.10. A horizontal venturimeter with inlet and throat diameters 30 cm and 15cm respectively is used to measure the flow of water. The reading of differential manometer connected to the inlet and the throat is 20 cm of mercury. Determine the rate of flow . Take cd = 0.98

GROUP C: All Questions are Compulsory.Q.11 Fill in the blanks (each question carries 2 marks)(i) The distance between the meta-centre of a floating body and the centre of

gravity of the body is called ________.(ii) Device used for measuring the rate of flow of a fluid flowing through a

pipe is _______.(iii) Loss of head in pipes due to friction as calculated from Darcy- weisbach

equation is hf = ________.(iv) ________ is a device used for lifting heavy weights by the application of

a much smaller force.(v) Device used for measuring the velocity of flow at any point in a pipe is

________.

Q.12 Multiple choice question. (Each question carries 2 marks)A double overhung pelton wheel has(a) Two Jets (b) Two Runner (c) Four Jets (d)Four Runners

(ii) Kaplan turbine is(a) Impulse turbine (b)Tangential flow turbine(c)Reaction turbine(d)None

(iii) The number of blades of the runner of a Francis turbine generally are of(a) 2 to 4 (b)4 to 8 (c) 8 to 16 (d)16 to 4

(iv) In a centrifugal pump, the liquid enters(a) At centre (b)At top (c) At bottom (d)From sides

(v) Maximum hydraulic efficiency of an impulse turbine is given by

(a) (b) (c) 1 + (d)1 -

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1+CosØ2

CosØ2

CosØ2

1-CosØ2

Q.13 True or false (each question carries 1 mark).(i) Specific weight of sea water is more than that of pure water because of

dissolved air. (ii) Fluid change volume under external pressure due to compressibility. (iii) Total pressure on the top of closed cylindrical vessel completely filled

with liquid is directly proportional to (radius) 4.(iv) The velocity of fluid particle at the centre of pipe section is minimum.

(v) The most familiar form of Bernoull’s equation is

The pressure gauges fitte

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d upstream and downstream of the orifice meter given

Reading of 19.12 N/cm2

and 9.

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81 N/cm2

respectively. Co-efficient of discharge for the

Meter is given as 0.6 . Fi

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nd the discharge of water through pipe.

Q.8 A pipe of diameter 300 mm and length 3500 m is used for the transmission of power

by water. The total head at the inlet of pipe is 500 m. Find the maximum power

available at the outlet of pipe. If the value of f = 0.006 ? Q.9 A uniform body of size 3 m long x 2 m wide x 1 m deep floats in water.

What is the weight of the body if depth of immersion is 0.8 m ? Determine meta centric height ?

Q.10. A horizontal venturimeter with inlet and throat diameters 30 cm and 15cm respectively is used

to measure the flow of water. The reading of differential manometer connected to the inlet and

the throat is 20 cm of mercury. Determine the rate of flow . Take cd = 0.98

Model Question Paper

(10)

(10)

(10)

GROUP C: All Questions are Compulsory.

Q.11 Fill in the blanks (each question carries 2 marks)

Q.12 Multiple choice question. (Each question carries 2 marks)Q.13 True or false (each question carries 1 mark).

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