III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 HYDRAULIC MACHINERY AND SYSTEMS (Mechanical Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Derive an expression for the force exerted by a jet on a stationary curved plate when the jet strikes the curved plate at one end tangentially when the plate is unsymmetrical.
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(b) A plate is acted upon at its center by a jet of water of diameter 20 mm with a velocity of 20 m/s. The plate is hinged and is deflected through an angle of 150 . Find the weight of the plate if the plate is not allowed to swing. What will be the force required at the lower edge of the plate to keep the plate in vertical position. [6+10]
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2. A Francis turbine works a head of 150 m while running at 750 rpm. The outer and inner diameter of the runner is 1.4 m and 0.85 m. The water enters the runner with a velocity of 30 m/s. the outer angle of the guide blades is 100 . Estimate the runner blade angles at inlet and outlet, if the discharge is radial and velocity of flow is constant through the runner. Also calculate the hydraulic efficiency. [16]
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3. (a) Write a short note on the factors influencing the performance of turbines? (b) Obtain an expression for the specific speed of a turbine?
[8+8]
4. (a) Show from first principle, the work saved against friction in the delivery pipe of a double-acting reciprocating pump by fitting air vessel is 39.2%
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(b) A double acting reciprocating pump running at 60 r.p.m has a plunger diameter of 250 mm and a stroke of 500 mm. The delivery pipe is 100mm diameter and 50m long. If the motion of the pump is simple harmonic, find the power required to overcome friction of delivery pipe when a large air vessel is fitted at the center line of the pump. Assume f=0.01. [8+8]
5. (a) Derive the equation for the head developed by the impeller in a centrifugal pump.
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(b) Derive the equation for minimum starting speed of a centrifugal pump. [8+8]
6. (a) What are the common problems associated with the working of a centrifugal pump ? What are their remedial measures? (b) What are the similarity laws? What is the significance of each law?
[8+8]
7. (a) Describe with neat sketch the working of a hydraulic press. (b) A hydraulic press has diameter of ram 200 mm and of plunger 40 mm. It is provided with a lever for applying force to the plunger. If the ratio of leverage is 10, determine the weight lifted by the press, when the force applied to the level is 100 N. [8+8] 1 of 2
NR
Code No: NR310302
8. (a) What are hydraulic systems? Describe briefly a hydrostatic and hydro-kinetic system and cite examples. (b) Describe the principle of working of a vane pump with a neat sketch.
NR310302 III B.Tech I Semester Supplimentary Examinations, May ...
(b) A hydraulic press has diameter of ram 200 mm and of plunger 40 mm. It is provided with a lever for applying force to the plunger. If the ratio of leverage.
(a) Give an overview of C++ class structure? (b) Compare the ... What is the difference between the C++ standard library, and the C++ standard · template library ...
(b) Write the principle of gas analysis by thermal conductivity. [8+8] · 5. What are the various designs of manometers used to measure pressure. [16] · 6. A tank of ...
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(b) In what way C++ throw specification differs from throw clause in java. [8] · 8. Explain in detail the sequence control in ML. [16] · *****. 1 of 1. AjntuWorld.in.
III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 · PETROCHEMICAL ENGINEERING · (Chemical Engineering) · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. Explain Refining of Crude p
i. an Induction Motor of 40 HP, with 0.8 p.f. and efficiency 0.85 · ii. a synchronous motor of 25 HP, with 0.9 p.f. leading and efficiency 0.9 · iii. Lighting load of 10 ...
(b) Binary data is transmitted over a telephone line with usable bandwidth of. 2400 Hz using the FSK signaling scheme. The transmit frequencies are 2025.
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(ε)0.15 MPa. If the billet is 15 inches long and the extrusion is done through square dies without lubrication, Determine the force required for the operation. [8].
With glucose insulin model. Estimate insulin sensitivity, discuss in detail? [16] · 7. Discuss with characteristics, block diagram and mathematical equations of the ...
[8+8]. (b) Explain the working of a single stage impulse turbine. 8. (a) Enumerate the advantages and disadvantages of gas turbines. [8+8]. 1 of 2. AjntuWorld.in ...
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3. (a) Compute Discrete Fourier transform of the following finite length sequence ... (a) Explain how the analysis of discrete time invariant system can be obtained.
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(a) Power control of HVDC converters · (b) Starting and ... (b) Draw the flow chart for AC/DC load flow. ... (b) Discuss the various faults exist in converter station?
NR. II B.Tech I Semester Supplimentary Examinations, May/Jun 2009 ... (b) The electric vector E of an electromagnetic wave in free space is given by the.
[4x4=16] · (a) Scrotum · (b) Sex glands · (c) Fallopian tubes · (d) Seminiferous tubules. 7. What are Lymph Nodes? Discuss about the spleen with a neat structure.
4. (a) Use Warshall's algorithm to find the transitive closure of the relation [10+6] · R = {(1,2)(1,3)(1,4)(2,3)(2,4)(3,4)} · (b) Are the simple graphs with the following ...
