OR Code No. 320358 III-B.Tech II-Semester Supplementary Examinations, May 2004 ADVANCED METAL CASTING (Common to Mechanical Engineering, Production Engineering and Mechanical Manufacturing Engineering) Max. Marks: 70 Answer any FIVE questions All questions carry equal marks ---
b) 2.a) b)
Explain with a neat sectional view the operation and advantages of hot blast cupola. Discuss the various types of refractories used for cupola lining.
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1.a)
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Time: 3 hours
Discuss the construction and the working principle of coreless induction melting furnace. Discuss the melting practice for Aluminium base alloy castings. Explain Chvorinov’s rule as applied to the design of size and shape of a riser. For the case of moulding it is decided to replace a spherical riser of diameter 100 mm by a cylindrical riser. Determine the size of the cylindrical riser that will have the identical solidification time. Assume risering ratio of height to radius of cylinder is 2:1.
4.
Explain investment casting process with neat sketches. Also Discuss the advantages, applications and limitations of the process.
5.
Why sand reclamation is necessary? methods.
6.
Explain the principle of ultrasonic method of testing the castings. What are the limitations of this method?
Discuss the various sand reclamation
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3.a) b)
With neat sketches explain the various types of gating systems. Discuss the advantages and limitations of each system.
8. a) b) c) d)
Explain any THREE of the following: Use of padding and chills. Permanent mould casting. Destructive testing for inspection of castings. Significance of gating ratios.
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.
1. a) With a schematic diagram explain the operation of a hot blast cupola. What is its · application? b) How are the refractories classified? Explain the factors in ...
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. - - -.
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 ...
Explain in detail gas liquid contact in mechanically agitated vessels. ... b) Derive the expression for height of a water cooling tower by using HTU and NTU.
Explain determinants and use of determinancy diagram. 2.a) ... Draw the E/R model representation of many-to-many relationship and · superfluous entity tables.
b) Give the steps of a registry-based algorithm for finding and using idle · workstations. 4.a) With reference to distributed file system implementation explain i) ...
b) With the help of a neat sketch of psychometric chart show the various psychrometric · processes naming them clearly. c) Explain what effective temperature is ...
b) State the method of manufacturing and special qualities of the following bricks. (i) sand â lime bricks (ii) Fly ash bricks (iii) Stabilised bricks. c) Explain briefly ...
the following (with comments and indentation) · a) To read the ... OR. Develop a complete COBOL program with indentation and comments to do the · following:.
... shown below. Take node 4 as reference · node. 7.a) Obtain the relation between Y and Z parameters. b) Find A B C D parameters of the network shown below.
320256. III-B.Tech. II Semester Supplementary Examinations December 2002/January 2003 · MODELLING OF POWER SYSTEM COMPONENTS · (Electrical and Electronics Engineering) · Time: 3 hours · Max. Marks: 70 · Answer any FIVE questions · All questions carry
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.
10 kVA at 0.8 pf lagging, load B draws 15 kW at a 0.5 pf lagging and load C · dissipates 5 kW at unity pf. (i) Find active power, reactive power and line current.
Code No:220352. II.B.Tech II-Semester. Supplementary ... not to exceed 90 N/mm · 2 · and (ii) The maximum shear stress is not to exceed 45 · N/mm · 2 . Tube.
1011. 7.a) Discuss the generation and detection of pulse width modulation. b) Explain the principle transversal equiliber. 8. Write short notes on the following:.
potential and muscle contraction. 2.a) With a neat ... b) Explain the origin of ECG from the heart muscles. ... 4.a) What are the different types of muscles? Explain ...
... plate capacitor is · equal to the conduction current in the leads. b) Investigate the vector magnetic potential for the infinite, straight, current element · L in free space. 3. Find the magnetic field intensity due to the presence of a finite st
