II B.Tech., II Semester Supplementary Examinations, November-2003 FLUID MECHANICS (Chemical Engineering) Time:3 hours Max Marks:70 Answer any Five Questions All questions carry equal marks. What is the resultant pressure on an immersed surface in a static fluid . Derive an equation for the same. How do you find the centre of pressure. What is Pascal’s Law?
The water flows in a pipe line, which changes from 20cm at one end ‘A’ to 50cm at another end ‘B’. Pressures at two ends are 78.5 KN/m2 and 58.9 KN /m2 respectively. The flow rate is 200 litres per second. End B is higher than end A by 3m. Determine the direction of flow. b) What are the applications of Bernoullis equation.
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2.a)
Derive an expression for the loss due to sudden enlargement in pipe flow. At a sudden enlargement of a water main from 240mm to 480 mm diameter the hydraulic gradient rises by 10mm . Estimate the rate of flow.
4.a)
Define Mach number. What is the significance of mach number in compressible fluid flows. A jet airplane is propelled at a velocity of 1000km/hr through air in which the atmospheric pressure is 88.3kN/m2. The temperature is –5oC and the wind velocity is negligible. Calculate the pressure intensity, the temperature, the density of air at the stagnation point on the nose of the jet, and determine its Mach number. Take R=290Nm/kg oK and k=1.4.
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A cyclone separator is used to remove sand grains from an air stream at 1500C. If the cyclone body is 0.6 m in diameter and the average tangential velocity is 16 m/s, what is the radial velocity near the wall of particles 20 and 40µm in size. How much greater are these values than the terminal velocity in gravity settling.
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3.a) b)
Explain vaccum pumps and Jet ejectors in detail. Compare the various devices used for moving fluids .
7.a) b)
What are the advantages and disadvantages of centrifugal pumps? What is NPSH? What happens if the required NPSH is not provided?
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A horizontal venturimeter having a throat diameter of 20mm is set in a 75mm Internal diameter pipeline. A manometer containing mercury under water measures the pressure differential over the instrument. When the manometer reading is 500mm, what is the flow rate? If 12 percent of the differential is permanently lost, what is the power consumption of the meter?
starter, (iii) Auto transformer starter limiting the supply line starting current to · twice the full-load value. Find the auto-transformer tapping in this case. - - -.
a) Follower moves outwards through 40mm during 60° of cam rotation. ... Draw the profile of the cam when the axis of the follower is offset 20mm towards.
SIMULA. b) What is concurrency ? Briefly explain the concurrency features in ADA. 8. Briefly explain the following : · (a) · Basics of LISP · (b) · Type equivalence.
(a) Job order production and batch production system. (b) Mass production and flow production. [4+4+4+4] · 7. DefineâCritical pathâ, âslack timeâand âDummy ...
c) A simple Delavel steam turbine nozzle ring is supplied with 200 kg/hr of dry · steam at 10 ... iii) The dryness of steam just as it leaves the turbine rotor blading.
(b) One bag contains 4 White balls and 3 black balls and a second bag contains 3 ... [8+8] · 3. (a) The amount of bread ( in hundreds of pounds) X that a certain ...
Code No: 220155. II-B.Tech. II-Semester Supplementary Examinations, April/May-2004 · PROBABILITY AND STATISTICS · (Common to Civil Engineering, Mechanical Engineering, Production ... b) If X is normally distributed with mean 8 and S.D 4, find ... 3.a
b) Explain the concept of Tunnel diode in detail. Draw and explain its ... voltage for a P channel JFET with a=2Ã10-4 cm and channel resistively · Ï=10ohm-cm.
State the second law of thermodynamics and explain how it is applied for · development of heat engine. 6. A reversible heat engine absorbs 252 kcal at 260°C, ...
b) Describe MOTT & WHEELER method of test Coke. 2.a) Describe a method for the manufacture of producer gas. b) Mention important properties and uses of ...
1.a) Explain the star-delta transformation. b) Using mesh analysis, find the currents in all the branches of the network given · below. 2.a) Explain Lenz's law and ...
Derive the equation for steady-state heat transfer through a spherical shell of inner · radius r1 and ... C and the outer wall of the annulus is insulated. Neglecting ...
(c) Explain sign conventions of heat and work in thermodynamics. [5+5+6] · 3. (a) State and explain second law of thermodynamics. (b) Define and explain ...
b=4.318 cm is fed by a 4 GHz carrier from a coaxial cable. Determine if a · TE10 mode will be propagated. If so calculate the phase velocity and group · velocity.
(c) An amplifier with voltage gain of 60 decibels uses 0.05 of its output voltage in · negative feedback. Calculate the gain of the feedback amplifier. [6+6+4].
Determine the length of the wire needed if the diameter · of the wire is 0.25 mm. Assuming that the temperature coefficient of resis- · tance of the wire is constant, ...
(b) Draw the block schematic of 4x1 MUX and give its truth table. [6] · 6. (a) Design a full adder with minimum number of NAND gates. [8] · (b) Draw the logic ...
8. (a) Enumerate various mechanical and diffusion properties of cartilage with ex- · amples? [8] · (b) Write briefly about âlubricationâ of joints? [8] · *****. 1 of 1.
1.a) Explain with a neat sectional view the operation and advantages of hot blast · cupola. b) Discuss the various types of refractories used for cupola lining.
5.a) What is sine bar. Sketch an arrangement for any one of the applications. b) Describe the constructional features and working of optical collimator.
Polynomials in single variable are stored in the form of linked lists. Each · structure has space for one coefficient and one exponent and a link. Assume.
armature and field resistances are 0.03 ohm. And 60 ohm ... 6.a) Explain with the help of diagrams how a rotating magnetic field is produced in · the air gap of a ...
