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Wednesday, 31 October 2012

System software-Model question paper for B.E/B.Tech Computer Science

1(a) Write SIC instructions to swap the values of ALPHA and BETA. (6 Marks)
(b) Write a sequence of instructions for SIC to clear a 20-byte string to all banks. (6 Marks)
(c) Suppose that ALPHA is an array of 100 words. Write a sequence of instructions for SIC/XE to find the maximum element in the array and store results in MAX. (8 Marks)

2(a) Write an algorithm for SIC/XE assembler (6 Marks)
(b) How could an assembler that allows external references avoid the need for an EXTDEF statement? What would be the advantages and disadvantages of doing this? (5 Marks)
(c) The process of fixing up a few forward references should involve less overhead than making a complete second pass of the source program. Why don’t all assemblers use the one-pass technique for efficiency? (4 Marks)
(d) Outline the logic flow of a simple one-pass load-and-go assembler. (5 Marks)
3(a) What would be the advantages and disadvantages of writing a loader using a high level programming language? (6 Marks)
(b) Develop a modular design for relocating and linking loader. (7 Marks)
(c) Compose merits and demerits of all the loading schemes. (7 Marks)
4(a) Explain the method to create macro definitions appearing as a part of the assembly listing with the help of macro processor and assembler. (6 Marks)
(b) How should a programmer decide whether to use a macro or a subroutine to accomplish a given logical function? (4 Marks)
(c) Write an algorithm for a two-pass macro processor in which all macro definitions are processed in the first pass, and all macro invocations are expanded in the second pass.  (6 Marks)
(d) List utility functions and routines that might be shared by an assembler and an integrated macro processor. (4 Marks)
5 (a) Write BNF grammar for JAVA. (6 Marks)
(b) Mention a high-level programming language with which you are familiar. Write a lexical scanner for it. (5 Marks)
(c) What kind of source program errors would be detected during syntactic analysis? (5 Marks)
(d) Write algorithm for scanner, parser and code generator for input/output, definitions, control statements of C language. (4 Marks)
6(a) What are the advantages of having several different classes of interrupts, instead of just one class with flag bits to indicate the interrupt type? (5 Marks)
(b) Explain the method of selection of the number and size of partitions for a system using fixed-partition memory management. (5 Marks)
(c) Mention the advantages of using two buffers for a sequential file. (4 Marks)
(d) Suppose that additional processors are added to a master-slave multiprocessing system. What problems might arise because of this upgrade? (6 Marks)
7(a) Design and implement a debugger. (7 Marks)
(b) Design and implement DDL, DML and DCL operations. (6 Marks)
(c) Design and implement a text editor with options create, open, save, insert, delete, replace, move, copy, cut and paste. (7 Marks)
8 (a) What quality specifications might be appropriate for an operating system for a personal computer? (4 Marks)
(b) Write a complete set of specifications for module Access_symtab. (6 Marks)
(c) Write algorithms for implementing the methods of the object Source_line. (6 Marks)
(d) What are the methods implemented in the class Binary_search_tree which are absent in the class Hash_table? (4 Marks)

Sunday, 21 October 2012

Building construction-model question paper for B.E/B.Tech engineering

1(a) Write a note on sub-surface soundings. (6 Marks)
(b)Draw a typical sketch for combined steel grillage rectangular footing for two steel stanchions. (4 Marks)
(c)How do you account for the load due to light partitions. (6 Marks)
(d)A concrete pile is being driven with a drop hammer weighing 2500 kg and having a free fall of 1.2m. Determine the load carrying capacity of the pile if the penetration in the last blow is 4 mm. (4 Marks)

2(a)Write short notes on flint walling, polygonal rubber masonry and square rubber uncoursed masonry. (6 Marks)
(b) What is brick nogging? explain. (4 Marks)
(c) Write a note on hollow clay block masonry. (4 Marks)
(d) A short wall of 1m length and 20 cm thickness carries an axial load of 90 kN/m. The wall is free at both ends. The height of the wall from the level of foundation footing to the center of roof slab is 4.2 m. Design the masonry for the wall. (6 Marks)

3(a)What is a cavity wall? Mention its advantages. (4 Marks)
(b) Write notes on glass brick partition, metal lath partition and trussed partition. (6 Marks)
(c) Using neat sketches, explain the method of constructing timber flooring. (6 Marks)
(d) Write a note on precast concrete floor. (4 Marks)

4(a) Discuss various cases of loadings transmitted to a lintel from the wall supported by it. (6 Marks)
(b) Explain the method of providing water proof terracing on R.C.C. roof slab. (4 Marks)
(c) Write a note on fastenings used in wood work. (4 Marks)
(d) Plan a stair case for a residential building in which the vertical distance between each floor is 3.36 m. The size of the stair hall is limited to 6 m x 4m. (6 Marks)

5(a) Write a note on encasement window. (4 Marks)
(b) Explain various types of plaster finishes. (6 Marks)
(c) Describe the constituents of a varnish. (4 Marks)
(d) What are the requirements of an ideal material for damp proofing? (6 Marks)

6(a) Compare timber scaffolding and steel scaffolding. (6 Marks)
(b)Write a note on post-construction anti-termite treatment. (5 Marks)
(c) Explain fire-resisting properties of various building materials. (4 Marks)
(d) Compute the thermal transmittance value for a 22.5 cm thick brick outside wall provided with 15 mm thick cement plaster on both the sides. (5 Marks)

7(a)Describe in  brief various methods of proportioning concrete. (5 Marks)
(b)Mention the basic differences between industrial air conditioning and comfort air conditioning. (4 Marks)
(c)Write a note on acoustical defects. (5 Marks)
(d) Explain with the help of sketches, timber form work for a 3m high concrete wall. (6 Marks)

8(a) Write short notes on Gantt chart and milestone chart. (8 Marks)
(b)Explain in brief various types of water closets. (4 Marks)
(c) Sketch a typical foundation plan. Explain. (4 Marks)
(d)Explain earthquake resistant features in stone masonry buildings. (4 Marks)

Friday, 19 October 2012

Lasers and non-linear optics-model question paper for MSc/PhD

1(a)Explain in detail various characteristics of LASER. (4 Marks)
(b) Derive the relations between various Einstein coefficients. (6 Marks)
(c) Differentiate between three level laser systems and four level laser systems. (6 Marks)
(d) Determine the difference in energies between two energy levels which results in a LASER of wavelength 632.8 nm. (4 Marks)
2(a) Write a note on mode coupling. (4 Marks)
(b) What is optical pumping? Explain. (6 Marks)
(c) Explain different types of resonators used in LASER systems. (6 Marks)
(d) Length of the resonant cavity is 50 cm. Determine the number of modes if the refractive index of the active medium is 1.01. (4 Marks)
3(a)Explain the importance of creation and annihilation operators in a quantum mechanical harmonic oscillator. (8 Marks)
(b) What are Fock states? Explain. (4 Marks)
(c) Explain how the rates of absorption and emission are calculated using the second quantized interaction Hamiltonian. (8 Marks)
4(a)Explain the working ammonia MASER. (6 Marks)
(b)Explain the significance of Zeeman splitting in the construction of Hydrogen MASER. (6 Marks)
(c) Deduce the condition for obtaining population inversion in three level MASER system. (8 Marks)
5(a) Differentiate between spatial coherence and temporal coherence. (6 Marks)
(b) Write a note on kinetics of optical absorption. (8 Marks)
(c) Explain collision broadening in plasma systems. (6 Marks)
6(a)Explain with the help of suitable equations, fluorescence quantum yield of LASER. (6 Marks)
(b) Explain the working of Ruby laser. (7 Marks)
(c) Explain the working of Nd:YAG laser. (7 Marks)
7(a) With the help of energy level diagrams, explain the working of He-Cd LASER and He:Se LASER. (10 Marks)
(b) What are vibronic LASERS? Explain. (6 Marks)
(c) Write a note on Excimer LASERS. (4 Marks)
8 (a) What is phase matching? Explain. (6 Marks)
(b) Write a note on optical mixing and parametric generation of light. (8 Marks)
(c) Explain the phenomenon multiquantum photoelectric effect. (6 Marks)

Tuesday, 16 October 2012

Hydrology and water resources engineering-For B.E/B.Tech

1(a) What is ‘water stress index’? Explain its importance. (6 Marks)
(b) Discuss briefly the various uses of water supplies in a civilized society. (4 Marks)
(c) Write a note on ‘hydrologic cycle’. (6 Marks)
(d) Wheat requires 7.5 cms of water every 28 days. The base period for wheat is 140 days. Determine the value of delta for wheat. (4 Marks)
2(a) What are the limitations of radars in weather probes? (4 marks)
(b) Mention the basic forms of clouds and their subdivisions. (4 Marks)
(c) What is cyclonic precipitation? Differentiate between cold front and warm front. (6 Marks)
(d) The values of annual precipitations at a rain gauge station expressed in cm per year in chronological sequence from 1967 to 1976 are indicated below:
70.2     31.7     68.8     50.9     60.3     58.7     43.9     50.3     48.7     67.5
Estimate the value of precipitation which has a recurrence interval of 5 year. (6 Marks)
3(a) Write a note on ground water depletion curve. (4 Marks)
(b) Explain the terms ‘residual rain’, ‘infiltration capacity’ and ‘rainfall interception’. (6 Marks)
(c) Describe any one practical method for the determination of evaporation. (5 Marks)
(d) Assuming the initial infiltration rate of 10 mm/h, final infiltration rate of 5 mm/h and the constant value describing the rate of decay of the difference between the initial and final infiltration rates as 0.95 h-1, calculate the total infiltration depth for a storm lasting 6 h. (5 Marks)
4(a) Enumerate and briefly discuss the various factors which affect the runoff from a catchment. (6 Marks)
(b) Write notes on ‘ instantaneous unit hydrograph’ and ‘design flood’. (6 Marks)
(c) Sketch a typical rating curve and explain its use. (4 Marks)
(d) What return period you would adopt in the design of a culvert on a drain if you are allowed to accept only 5% risk of flooding in the 25 years of expected life of the culvert? (4 Marks)
5(a) Explain the construction, design and maintenance of dikes. (6 Marks)
(b) Explain the terms ‘emergency evacuation’, ‘flood losses’ and ‘flood-plain zoning’. (6 Marks)
(c) Write a note on flood-forecasting. (4 Marks)
(d) Define and explain the term ‘Antecedent precipitation index’. (4 Marks)
6(a) What is a ‘flood control reservoir’? Mention different types. (6 Marks)
(b)Discuss with a neat sketch, the various storage zones of the dam reservoir. (6 Marks)
(c) Write a note on reservoir sedimentation and its control. (4 Marks)
(d) The design annual rainfall for the catchment of a proposed reservoir has been computed to be 99 cm. The catchment area has been estimated to have the mean annual temperature of 200C. The catchment area contributing to the proposed reservoir is 1000 Calculate the annual design catchment yield for the reservoir using Khosla’s formula. (4 Marks)
7(a) Explain artificial recharge of ground water. (4 Marks)
(b) Differentiate between shallow dug wells and deep dug wells. (4 Marks)
(c) River valley projects are generally made multipurpose. Why? (4 Marks)
(d) A circular island 600m radius has an effective rainfall infiltration of 4 mm/day. A central well is pumped to deliver a constant discharge of 25 m3/h from an aquifer of hydraulic conductivity of 20 m/day. Diameter of the well is 0.6 m. The head around the island is 10 m. What is the drawdown at the well and at the water divide? (8 Marks)
8 (a) Enlist the various steps involved in engineering economy studies. (6 Marks)
(b) Discuss the hydraulic data that you would collect for proper calibration of a hydrologic model. (4 Marks)
(c) Write a note on flood-forecasting digital computer models. (4 Marks)
(d) An equipment used in construction activity costs INR 40000 at first purchase. The average annual expenditure thereon for OMR is estimated to be INR 9000 for the next three years for which funds to be procured at the beginning of each year. At the end of the third year, it can be scrapped at a then value of INR 10000. If the acceptable rate of return is 15% per annum, what should be the annual income by this machine as reckoned at the end of each year? (6 Marks)

Saturday, 6 October 2012

Dock and Harbour engineering-For B.E/B.Tech

1(a) How are the harbor surveys plotted? (6 Marks)
(b) What are the common errors in sextant and how are they rectified? (6 Marks)
(c) Write a note on formation of bars at the mouths of the rivers. (4 Marks)
 (d) The charted level is +3m. The height of the tide is 4m. What will be the effective depth of water? What will be the height of the tide at -0.2m?     (4 Marks)
2(a) What is a wind rose? Explain with a neat figure. (4 marks)
(b)Describe the different terms used in ship technology. (6 Marks)
(c) Write a note on the usage of figures of projected traffic while planning a new port. (6 Marks)
(d) Wind blows at 20 kmph. What is the pressure exerted on a surface at right angles to the wind? (4 Marks)
3(a) Explain Littoral drift and tidal currents. (6 Marks)
(b) Explain in detail different types of gravity wharves. (6 Marks)
(c) Write a short note on quay. (4 Marks)
(d) Design a channel and basin for a design ship of 25000 DWT for an estuarian port where tidal range is 7.2 m and wave height 3.1m outside harbor. (4 Marks)
4(a) What is rubble mound breakwater? Discuss the points in favour and against. (6 Marks)
(b) Distinguish between Mole and Pier. (6 Marks)
(c) What is a buoy? Illustrate its main shapes. (4 Marks)
(d) In a rubble mound breakwater, with maximum wave height of 2m, and slope 1 in 3, what is the weight of individual cap stone required for stones with specific weights of 2, 1.8 and 1.6. (4 Marks)
5(a) What is a platform mooring system? Explain. (6 Marks)
(b) What are the factors affecting RO-RO ferry service? Explain. (6 Marks)
(c) Compare the functions of dry dock and a lock. (4 Marks)
(d) Write notes on Groyne and Sand dune. (4 Marks)
6 (a) Write short notes on syncrolift and gridiron. (4 Marks)
(c) What are the different types of cranes and the suitability of each type used for cargo handling? (8 Marks)
(d) The biggest vessel to be slipped is a tug of 30m length and 3m draught. If the height of the cradle block from the slipway deck is to be 0.75 m and the inclination of the slipway to the horizontal is 3030. Find the total length of the slipway.  (4 Marks)
7(a) Distinguish between a transit shed and a warehouse. Discuss their functions. (6 Marks)
(b) Explain different types of harbor crafts. (4 Marks)
(c) What is the need for Navigational aids? Mention and explain different types of aides used on shore and at sea. (6 Marks)
(d) The quay is 220m in length and the shed is to be 175m. Assume that vertically bags 2m high could be stacked. What will be the width of the required shed for the storage of 10000 tonnes and with 40% space for movement? (4 Marks)
8 (a) Discuss the uses of hydraulic dredge on a pipe line and with hopper. (6 Marks)
(b) With the help of a neat sketch, explain the working of suction dredger. (8 Marks)
(c) Enumerate and briefly explain the types of cofferdams. (6 Marks)