R13. II B. Tech I Semester Regular/Supply Examinations, Oct/Nov DATA STRUCTURES (Com. to ECE, CSE, EIE, IT, ECC) PART B

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1 Code No: RT21042 R13 SET - 1 II B. Tech I Semester Regular/Supply Examinations, Oct/Nov DATA STRUCTURES (Com. to ECE, CSE, EIE, IT, ECC) 1. a) Compare between linear search and Binary search (4M) b) What are the applications of stack? (4M) c) What are the advantages of circular linked list. (4M) d) Write the routine for in-order traversal of Binary tree. (4M) e) Define balanced binary tree? (3M) f) What is minimum spanning tree? Explain. (3M) PART B 2. a) Explain about Towers of Hanoi problem. b) Write a program for sorting the given elements using quick sort. 3. a) What is stack? How to represent stacks? Explain. b) Write a program for performing queue operations. 4. a) What are the advantages and disadvantages of linked list.? b) Swap two adjacent elements by adjusting only the pointers using singly linked lists. 5. a) Explain about the binary tree traversing techniques. b) Write a program that accepts a pointer to a node and returns TRUE if that node is the root of a valid binary tree and FALSE otherwise 6. a) What is BST? Explain the operations of BST. b) Prove that the depth of a random binary search tree is O(logn), on average. 7. a) What is Graph? How to represent graphs? Explain. b) Discuss about BFS with example. ****

2 Code No: RT21042 R13 SET - 2 II B. Tech I Semester Regular/Supply Examinations, Oct/Nov DATA STRUCTURES (Com. to ECE, CSE, EIE, IT, ECC) 1. a) What is recursion? Give examples. (4M) b) Differentiate between circular queue and priority queue. (4M) c) What are the disadvantages of circular linked list. (4M) d) What are the operations of binary tree? Explain. (4M) e) Define Threaded Binary tree. (3M) f) Define DFS. (3M) 2. a) Explain about the heap sort with an example. b) Write a program for Fibonacci search. 3. a) What is stack? What are the applications of stack? Explain. b) How to implement the Queues? Explain. 4. a) What are the advantages and disadvantages of doubly linked list.? b) Swap two adjacent elements by adjusting only the pointers using doubly linked lists. 5. a) Explain about the creation of binary tree using the preoder and postorder traversals b) Write a program for the creation of binary tree using the preoder and postorder traversals 6. a) Explain about the rotations in AVL tree. b) Give a precise expression for the minimum number of nodes in a n AVL tree of height h. 7. a) Explain about the kruskal s algorithm with example. b) How to represent graphs? Explain. ****

3 Code No: RT21042 R13 SET - 3 II B. Tech I Semester Regular/Supply Examinations, Oct/Nov DATA STRUCTURES (Com. to ECE, CSE, EIE, IT, ECC) 1. a) Write short notes on algorithm analysis and complexity. (4M) b) What the applications of stack? Explain. (4M) c) How to represent polynomial expressions using linked list? Explain. (4M) d) What are the properties of Binary trees? (3M) e) What are the applications of Balanced binary tree? (4M) f) Define transitive closure. (3M) 2. a) Discuss about the merge sort with an example. b) Write a program to sort the given elements using the radix sort. 3. a) What is Queue? What are the applications of Queue? Explain. b) Write a program for evaluating an arithmetic expression. 4. a) Explain about circular linked lists. b) Given two sorted lists, L 1 and L 2, write a procedure to compute L 1 L 2 using only the basic list operations. 5. a) Explain about the creation of binary tree using the preoder and inorder traversals b) Write a program for the creation of binary tree using the preoder and inorder traversals 6. a) Explain the procedure for deleting an element from a binary search tree b) Write a routine for inserting an element into the binary search tree. 7. a) Explain about the prim s algorithm with example. b) Discuss about BFS with example. ****

4 Code No: RT21042 R13 SET - 4 II B. Tech I Semester Regular/Supply Examinations, Oct/Nov DATA STRUCTURES (Com. to ECE, CSE, EIE, IT, ECC) 1. a) Discuss about bubble sort. (4M) b) Define priority queue. (3M) c) Write a program to print out the elements of the linked list. (4M) d) Explain about different binary tree traversal techniques. (4M) e) What is Balanced binary tree? What is the need of this tree? (4M) f) What are the applications of Graphs? (3M) PART B 2. a) Explain about different searching mechanisms. b) Write a program for sorting the given elements using insertion sort. 3. a) Define Queue? Differentiate between Queue and circular queue. b) Write a program for converting infix to postfix expression. 4. a) Define linked list? What are the applications of linked list? Explain. b) Given two sorted lists, L 1 and L 2, write a procedure to compute L 1 U L 2 using only the basic list operations. 5. a) How to represent binary trees? Explain. b) Show that the maximum number of nodes in a binary tree of height h is 2 h a) Explain about the single and double rotations with examples b) Write routine for deleting an element from the binary search tree. 7. a) What are different Graph Traversal techniques? Explain. b) Discuss about Dijkstra s algorithm. ****

5 Code No: RT21041 R13 SET - 1 ELECTRONIC DEVICES AND CIRCUITS (Com. to ECE, EIE, ECC) 1. a) Draw the energy band structures of Insulators, Semi conductors and Metals (3M) b) Draw the Construction diagram and characteristics of the SCR (4M) c) Derive expression for the efficiency of a Half wave rectifier circuit (4M) d) Transistor works as an amplifier, justify? (4M) e) Draw the BJT collector to base bias circuit and derive for the stability factor S (4M) f) Draw the small signal low frequency h-parameter model of a CE Transistor (3M) 2. a) Derive expression for current density of an intrinsic semiconductor b) Show that the Fermi energy level lies in the centre of forbidden energy band for an intrinsic semiconductor? Derive. 3. a) Determine the forward resistance of a Silicon PN junction diode when the forward current is 6 m A at room temperature b) Draw the energy band structure of an open circuited PN junction and derive expression for the total shift in the energy level E 0 4. a) Draw the Half-wave rectifier with relevant waveforms and derive expression for its efficiency b) Design LC filter for a Full-wave rectifier circuit to provide an output voltage of 10 V with a load current of 200 m A and the ripple is limited to 2%. (10M) (6M) 5. a) Draw the construction diagram, operation characteristics and parameters of JFET b) For the NPN transistor connected in CE configuration with V CC =9 V, V BB =4V, I C = 5 m A, V CE =5 V, β=50 and V BE =0.7 V. Find β and R B 6. a) Discuss the need for biasing a transistor and illustrate the DC load line analysis of BJT b) A p-n-p Germanium transistor is used in CE mode with self bias circuit. The circuit component values are V CC = 4.5 V, R C = 1.5 kω, R e = 0.27 kω, R 1 = 2.7 kω, R 2 = 27 kω. If β = 44, find the quiescent point. 7. a) Give the complete analysis of CE transistor amplifier circuit using h-parameters and derive expressions for the current gain, voltage gain, input impedance and output admittance b) Give the complete low-frequency analysis of Common Source FET amplifier ****

6 Code No: RT21041 R13 SET - 2 ELECTRONIC DEVICES AND CIRCUITS (Com. to ECE, EIE, ECC) 1. a) Compare and contrast drift and diffusion mechanisms (4M) b) Draw the energy band diagram of an open circuited PN junction (3M) c) Draw the Bridge rectifier circuit with input and output waveforms (4M) d) If the transistor has an α of 0.98, find the value of β and if β is 200 find α (4M) e) Draw the self bias circuit for BJT and derive for the stability factor S (4M) f) Draw the small signal low frequency h-parameter model of a CB Transistor (3M) 2. a) Elaborate how Hall effect is used to measure mobility and conductivity? Derive relevant expressions b) Calculate the resistivity of an intrinsic germanium at K. Given, n i =2.5x10 13 per cm 3, µ n =3800 cm 2 /V-Sec. and µ p =1800 cm 2 /V-Sec.. 3. a) Draw the Construction diagram, operation and characteristics of SCR b) Derive expression for the Transition capacitance of PN junction diode 4. a) Draw the Full-wave rectifier with center tapped transformer, draw relevant waveforms and derive expression for its efficiency. b) A Full-wave rectifier is connected with LC filter, derive expression for the ripple factor and draw relevant waveforms 5. a) Draw the drain characteristics of depletion mode MOSFET. Explain different operating regions. b) For the NPN transistor connected in CE mode with V CC =12V, V BB =5V, I C =15 m A, V CE =5 V, β=99, V BE =0.7 V and R E =55Ω Find I B,R B and R C 6. a) What is the need to fix the operating point of a transistor and illustrate the complete AC load line analysis of BJT b) A p-n-p transistor is used in a common collector circuit with R C =0. The circuit component values are V CC =3 V, R e = 1kΩ, R 1 =R 2 = 5kΩ. If β = 44, find the quiescent point. 7. a) Give the complete analysis of CC transistor amplifier circuit using h-parameters and derive expressions for the current gain, voltage gain, input impedance and output admittance b) Find the value of h oe in terms of CB h-parameters ***** (10M) (6M)

7 Code No: RT21041 R13 SET - 3 ELECTRONIC DEVICES AND CIRCUITS (Com. to ECE, EIE, ECC) 1. a) State Hall effect and what are its applications (4M) b) The reverse saturation current of a Silicon PN junction diode is 10 µa. calculate the diode current for the forward bias voltage of 0.5V at 27 0 C. (4M) c) Draw the Full wave rectifier circuit with input and output waveforms (3M) d) Draw the Ebers-Moll model of a transistor (3M) e) What is thermal runaway? Brief it (4M) f) Compare different transistor amplifiers (4M) 2. a) A specimen of silicon has a square cross section of 3x3 mm and length of 3.5 cm, the current is due to electrons with mobility of 1300 cm 2 /V-Sec. A DC voltage of 1V is impressed across the bar results 8 m amp of current. Calculate the concentration of free electrons and the drift velocity. b) State and explain Hall effect and derive for Hall voltage? What are the applications of Hall effect? 3. a) Compare and contrast Zener breakdown and Avalanche breakdown b) Draw the Construction diagram, operation and characteristics of UJT 4. a) Draw the Bridge rectifier with relevant input and output waveforms and derive expression for its efficiency b) A Full-wave rectifier is connected with an inexpensive capacitor filter, derive expression for the ripple factor and draw relevant waveforms 5. a) Compare and contrast JFET with MOSFET? Draw the symbols of all MOSFETs b) The NPN transistor has α=0.98, I CO =1.6µA. This transistor is used in CE configuration with V CC =12V and R L =6KΩ. Calculate the minimum base current required for the transistor to enter into saturation 6. a) Draw the self bias circuit with BJT and derive expressions for all the three stability factors b) Assume a Silicon transistor with self bias arrangement. Given that β=50, V BE active =0.7, V CC = 22.5 V, and R C = 5.6 k Ω. It is desired to establish the Q-point at V CE = 12 V, I C = 1.5 m A, and stability factor S 3. Find R E, R 1 and R 2 7. a) The CE transistor amplifier circuit has the following specifications: (10M) h ie = 1100Ω, h re = 2.5 x 10-4, h fe = 50, h oe = 24 µa/v. If R L = 10 k Ω and R S = 1 k Ω, Find various gains and input, output impedances b) Find the value of h re in terms of CB h-parameters (6M) ****

8 Code No: RT21041 R13 SET - 4 ELECTRONIC DEVICES AND CIRCUITS (Com. to ECE, EIE, ECC) 1. a) Relate conductivity with current density in a semiconductor (4M) b) Draw the Construction diagram and characteristics of the Photo diode (4M) c) Compare various filter circuits in terms of ripple factors used with rectifier circuits (4M) d) Compare JFET and MOSFET (4M) e) A FET has a drain current of 4 ma, if I DSS is 10 ma and V P is - 6V. Find the value of Gate to Source voltage (3M) f) Draw the small signal model of FET (3M) 2. a) In a P-type semiconductor, the Fermi level is 0.35 e V above the valance band at room temperature. Determine the new position of the Fermi level for temperatures of K and K b) Derive expression for the continuity equation 3. a) What is a Tunnel diode? Explain the construction and working with neat band diagrams? Draw its characteristics b) Calculate the dc and dynamic ac resistances of a Silicon diode at K with I 0 =2.5 µa and at an applied voltage of 0.25 V across the diode 4. a) Define transformer utilization factor and derive its expression for i) Half wave rectifier ii) Full wave rectifier. b) A Full-wave rectifier is connected with an inductor filter, derive expression for the ripple factor and draw relevant waveforms 5. a) From the transistor current components, deduce the current equation of transistor b) Calculate the values of I D and g m for V GS = -0.8V, if I DSS and V P are given as 12.(4M)A and -6V respectively. 6. a) The CE transistor uses a Collector to Base bias circuit has V CC =12V, R C =2 kω and R B = 100 kω. Calculate quiescent point and stability factor S b) What is thermal runaway? Derive relevant expressions to obtain thermal stability 7. a) From the low-frequency small signal FET model, derive for the FET parameters b) The CC transistor amplifier circuit has the following specifications: h ic = 1100Ω, h rc = 0.99, h fc = -51, h oc = 25 µa/v. If R L = 15 k Ω and R S = 1 k Ω, Find various gains and input, output impedances ****

9 Code No: RT21043 R13 SET - 1 ENVIRONMENTAL STUDIES (Com. to ECE, EIE, ECC) 1. a) What is meant by food chain? (3M) b) List the effects of deforestation. (4M) c) What is meant by the term Biopiracy? (3M) d) Differentiate between smog and photochemical smog. (4M) e) Classify the rainwater harvesting methods. (4M) f) What are the objectives of Environmental impact assessment? (4M) 2. a) List the major urban environmental issues in India. b) Explain the functioning of hydrological cycle. 3. a) Write about Mineral Resources in detail. b) Explain about the use and over utilization of surface and ground water 4. a) Write about the India as a mega and diversity nation. b) Explain about conservation of Biodiversity 5. Explain about causes, effects and control measures of Air pollution? (16M) 6. a) Suggest various methods for the improvement of irrigation efficiency by reducing loss due to evaporation. b) Write the issues related to enforcement of environmental legislation 7. What is significance EIA and various stages of EIA. (16M) *****

10 Code No: RT21043 R13 SET - 2 ENVIRONMENTAL STUDIES (Com. To ECE, EIE, ECC) 1. a) What are ecological pyramids? (4M) b) Write a short notes on the mineral resources of India. (4M) c) Define the term Hotspot in Biodiversity. (4M) d) Define Marine pollution. (3M) e) What is acid rain? (4M) f) Write the key elements of EIA. (3M) PART B 2. a) Explain the components of environment and their major interactions. b) Compare the flow of energy and nutrients through an ecosystem. 3. Write about Food resources, World food problems and effects of modern (16M) agriculture. 4. a) Write about the Hot spots of Biodiversity in detail. b) Explain about the threats of Biodiversity 5. Explain about causes, effects and control measures of Water Pollution. (16M) 6. Write in detail about the water (Prevention and Control of Pollution) Act, (16M) 7. What is significance of EMP and various stages of EMP. (16M) *****

11 Code No: RT21043 R13 SET - 3 ENVIRONMENTAL STUDIES (Com. To ECE, EIE, ECC) 1. a) What are pioneer species? (3M) b) What is geothermal energy? (4M) c) Explain the term Endemic Species with examples. (4M) d) Define noise. (3M) e) List the major pollution control acts in India. (4M) f) What are the possible avenues in which NGOs can contribute to the cause of (4M) environmental protection? PART B 2. a) Explain the possible impacts of ozone depletion on the ecosystem. b) Explain the components and functions of a forest ecosystem. 3. Write about renewable and non renewable energy resources. (16M) 4. a) Write about the values of Biodiversity in detail. b) Explain about Endangered and endemic species of India Explain about causes, effects and control measures of Soil Pollution. Write in detail about The Air (Prevention and Control of Pollution) Act, What is the significance of EIS and various stages of EIS. ***** (16M) (16M) (16M)

12 Code No: RT21043 R13 SET - 4 ENVIRONMENTAL STUDIES (Com. To ECE, EIE, ECC) 1. a) Why decomposers are called micro consumers? (4M) b) Define the term Desertification. (3M) c) Define biodiversity. (4M) d) Define the Municipal solid waste. (4M) e) What are the principal functions of central pollution control board? (4M) f) List the different types of impact assessments possible. (3M) PART B 2. a) Explain the components and functions of a Grass Land ecosystem. b) Explain the role of renewable energy sources in achieving a sustainable energy base. 3. Write about the land resources, waste land reclamation and man induced land slides (16M) 4. a) Write about the Endangered and Endemic species of India in detail. b) Explain about man-wild life conflicts 5. Explain about causes, effects and control measures of Noise Pollution. (16M) 6. Write in detail about The Environment (Protection) Act, (16M) 7. What are significance and various stages Environmental audit and Ecotourism? ***** (16M)

13 Code No: RT21045 R13 SET - 1 II B. Tech I Semester Regular/Supplementary Examinations, Oct/Nov-2016 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE) 1. a) What is the principles of electromechanical energy conversion b) Based on what principle a DC generator works? c) What are the applications of DC motors? d) What is the procedure for performing the open circuit test on a single phase transformer? e) Why starters are necessary for starting of 3-phase induction motors? f) What are the various applications of AC servomotors? 2. a) Using energy equation, derive an expression for force on a conductor of the armature of dc motor. b) For a single-excited magnetic system, derive the relation for the magnetic stored energy in terms of reluctance. 3. a) Explain the performance characteristics of shunt generator and derive the expression for critical speed. b) A separately exited generator when running at 1200 rpm supplies a current of 200 A at 125 V to a circuit of constant resistances.what will be the current when speed drops to 1000 rpm if the field current is unaltered? Armature resistance is 0.04 ohms and the total voltage drop at brushes is 2 V. Ignore the change in armature reaction 4. a) Derive an expression for torque developed in the armature of DC motor b) Explain the operation principle of 3-point starter with neat diagram? 5. a) Draw and explain the phasor diagram for a single phase transformer when it is connected to a resistive load? b) Short-circuit test is conducted on a 5KVA, 400V/100 V single phase transformer with 100 V winding shorted. The input voltage at full load current is 40 V. The wattmeter, on the input reads 250 W. Find the power factor for which regulation at full load is zero. 6. a) Derive the expression for torque of an Induction motor under no load and running conditions. b) The power input to a rotor of 400V, 50 Hz, 3-phase, 12 pole Induction motor is 100w.The rotor emf has a frequency of 2Hz. Calculate (i) slip (ii) Rotor speed (iii) rotor Cu losses (iv) Mechanical power developed. 7. Briefly discuss the constructional details of various types of capacitor motors in 1- ф induction motor. ****

14 Code No: RT21045 R13 SET - 2 II B. Tech I Semester Regular/Supplementary Examinations, Oct/Nov-2016 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE) 1. a) Define energy and co-energy b) What are the important characteristics of DC generator? c) What is the necessary of a starter for DC motor? d) Prove the condition for maximum efficiency of a transformer? e) Why the rotor of a three phase induction motor can never attain the synchronous speed f) What are the salient features of Servomotors? 2. a) Discuss the necessity of a multiple excited magnetic field system in certain electromechanical devices. b) A cylindrical rotating machines has the following parameters Lss = 0.15H, Lrr = 0.06H, Lsr = 0.08cosθ H. Determine the voltage induced in the rotor and its frequency where the rotor rotating at 3000 rpm and stator current is 5A at 50Hz. 3. a) What is a separately and self exited DC generators, Explain them with help of neat sketches b) A 6-pole wave connected DC generator has 1000 armature conductors and a flux/pole of 0.035wb. At which speed must it be driven to generate 600V? 4. a) What are the different methods speed controls of DC motor? Give the advantages and disadvantages b) An 800 kw, 500 V DC shunt generator has fallowing data: armature resistance is 0.005ohms,mechanical losses is 10 kw, iron losses is 11kW,shunt field resistance is 50 ohms, brush contact drop is 1 V per brush and stray loss is 1% of output. Find (i) efficiency at full load and (ii) efficiency at half load. 5. a) Discuss how you perform open circuit test and short circuit tests on a single phase transformer in the laboratory. How do you find the efficiency of the transformer? b) The voltage per turn of a single phase transformer is 1.1V. When the primary winding is connected to a 220V, 50Hz A.C. Supply, the secondary voltage is found to be 550V. Find (i) Primary and Secondary turns. (ii) Core area if the maximum flux density is 1.1T. 6. a) Explain why a 3-phase induction motor cannot develop torque when running at synchronous speed. b) Calculate the synchronous speed, %slip and rotor frequency of three-phase, 50Hz, 6-pole Induction motor running at 970rpm. 7. Explain the constructional details of shaded pole 1-ф induction motor. ****

15 Code No: RT21045 R13 SET - 3 II B. Tech I Semester Regular/Supplementary Examinations, Oct/Nov-2016 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE) 1. a) What is the basic principle of single excited machine b) What are the causes of failure to excite self excited generator? c) Obtain the condition for maximum efficiency d) What is the need of stepping up and stepping down voltages in a power system e) Define the slip of an induction motor. f) Why 1-phase induction motor is not self starting 2. Define energy and co-energy and explain how that torque expression for an electro-mechanical energy conversion is derived from these. 3. a) Draw and explain the no-load magnetization characteristics of a separately excited generator? b) Derive the expression for emf generated in a DC machine 4. a) Which method preferred when speed of a DC shunt motor is to be controlled below rated speed and explain with help of diagram. b) A 220V DC shunt motor has an armature resistance of 0.5ohms and is excited the procedure constant flux. At full load the motor runs at 1000rpm.Taking an armature current of 40A. If a resistance of 0.8ohms is inserted in series with the armature determine speed at the full load. 5. a) Develop the equivalent circuit of a single phase transformer. b) Find (i) active and reactive components of no load current and (ii) no load current of a 440/220V single phase transformer if the power input on no load to the high voltage winding is 80W and power factor of no load current is 0.3 lagging. 6. Explain how the rotating magnetic field is developed in a 3-ø induction Motor? 7. a) Explain how the pulsating mmf of a 1-phase induction motor may be considered equivalent to two oppositely rotating fields. Develop an expression for the torque of the motor. b) Explain how 1-phase motors are classified depending on construction & method of starting? ****

16 Code No: RT21045 R13 SET - 4 II B. Tech I Semester Regular/Supplementary Examinations, Oct/Nov-2016 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE) 1. a) Derive the expression for forces and torque in a magnetic field systems b) State the purpose of magnetic yoke in a DC machine c) What are the various factors affecting the torque of a DC motor d) What is a transformer? e) List out the merits and demerits of slip ring and squirrel cage induction motor. f) How 1-phase motors are classified depending on construction and method of starting? 2. a) Explain the multi excited magnet field system with necessary diagrams. b) i The λ -relationship for an electromagnetic system is given by λ = 2, where g g is the air gap length. For current i=2a, and g=10cm. Determine the mechanical force on the moving part using a) energy of the system and b) co-energy of the system. 3. Explain the construction features of a DC machine with the help of neat sketches? 4. a) Explain principle of operation of 4-pole starter with neat diagram b) A short shunt compound DC generator supplies a current of 75A at a voltage of 225V. Calculate the generated voltages if the resistance of armature, shunt field and series field windings are 0.04ohms, 90ohms, and 0.02ohms respectively. 5. a) Explain the constructional details of a single phase transformer. b) A 4 KVA, 200/400V, 50Hz single phase transformer is supplying full load current at 0.8 power factor. The following are the test results: O.C. Test (LV Side) : 200V, 0.8A, 70W (L.V. Side) S.C. Test (HV Side): 20V, 10A, 60W (H.V. Side) Calculate efficiency, secondary voltage and current into primary at the above load. 6. a) Explain any one method of starting of an induction motor with neat diagram. b) Calculate the synchronous speed, slip, slip speed and rotor frequency of three-phase, 50Hz, 4-pole Induction motor running at 1440rpm. 7. Explain double field revolving theory with the help of neat diagrams ****

17 Code No: RT21034 R13 SET - 1 MANAGERIAL ECONIMICS AND FINANCIAL ANALYSIS (Com. to ME, ECE, CSE, IT, ECC, MTE) 1. a) Limitations of Law of Demand (4M) b) Properties of Iso-Quants(Iso-Product) Curves (4M) c) Features of Monopoly Competitions (3M) d) Features of Business Organization (4M) e) Dual Aspect Concept of Double Entry Book Keeping (3M) f) Features of Capital Budgeting Decisions (4M) PART B 2. a) What are the nature, characteristics, importance & scope of managerial economics? b) What is the importance of price elasticity and illustrate different models of price elasticity with suitable formulas and graphs? 3. a) What is law of variable proportions and identify the behavior of total physical product curve, average physical product curve and marginal physical product curve? b) Determine P/V Ratio %, Fixed Cost and BEP with the help of following Information: Description Sales(Rs.) Profits(Rs.) a) Determine price & output for both firm & industry in both short run period and long run period under perfect competition? b) What are the different managerial theories of Firm? 5. a) Differentiate Private and Public Limited Companies in their features & merits? b) What is the importance of Business Cycle and what are the different phases of Business Cycles? 6. a) List out various Accounting Concepts and Conventions and illustrate any six of them? b) What is a Ratio, what are the different types ratios that prevail to assess the performance of various companies? 7. a) Differentiate traditional & DCF Techniques of capital budgeting techniques b) Determine Pay Back Period for the following projects: Rs. In Lakhs Year Initial Cost Project-X Project-Y *****

18 Code No: RT21034 R13 SET - 2 MANAGERIAL ECONIMICS AND FINANCIAL ANALYSIS (Com. to ME, ECE, CSE, IT, ECC, MTE) 1. a) Factors Influencing Law of Demand (4M) b) Producers Equilibrium (3M) c) Features of Monopolistic Competitions (3M) d) Features of Partnership (4M) e) Debit and Credit Governing Rules for Real & Personal Accounts (4M) f) Merits of Pay Back Period (4M) PART B 2. a) What are the nature, characteristics, importance & scope of managerial economics? b) Illustrate income, advertisement, cross and price elastcities with suitable formulas and graphs? 3. a) What is producer s equilibrium and identify the behavior of Iso-product and Iso- Cost curves? b) Determine P/V Ratio %, Fixed Cost and BEP with the help of following Information: Description Sales(Rs.) Profits(Rs.) a) Determine price & output for both firm & industry in both short run period and long run period under monopoly competition? b) What are the objectives, situations, methods of pricing? 1 of 2

19 Code No: RT21034 R13 SET a) What are the features, merits and demerits of cooperative society? b) What are the different phases of Business Cycles, how these concepts are correlated for industrial development? 6. a) Identify the recording process of Journal Entry in a systematic manner? Date Description Amount Rs Business Commenced with a cash 5,00, Deposited in Lokesh Bank Ltd 3,00, Goods Purchased from Heritage Ltd. 25,00, Sold Goods to Brahmani Ltd. 45,00, Salaries & Rent Paid 3,00, Received a Bank Cheque From Brahmani Ltd 30,00, Paid to Heritage Ltd. 20,00, Paid Office Expenses 1,00,000 b) Compute Current Ratio and Quick Ratio. If Cash is Rs.1.50 Lakhs, ST Investments are Rs.2.50 Lakhs, Bank is Rs.8.50 Lakhs, Debtors is Rs.5.50 Lakhs, Creditors is Rs.3.50 Lakhs, Outstanding Expenses are Rs.2.50 Lakhs, Bills Receivables are Rs.5.50 Lakhs, Stock is Rs.8.00 Lakhs and Bills Payables are Rs.6.50 Lakhs,? 7. a) Differentiate Accounting Rate of Return(ARR) and Internal Rate of Return(IRR) techniques of capital budgeting? b) Determine Accounting Rate of Return for the following projects, assuming that the company follow straight line method of depreciation: Rs. In Lakhs Year Initial Cost Scrap Project-X Project-Y ***** 2 of 2

20 Code No: RT21034 R13 SET - 3 MANAGERIAL ECONIMICS AND FINANCIAL ANALYSIS (Com. to ME, ECE, CSE, IT, ECC, MTE) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ PART-A 1. a) Characteristics of Managerial Economics (4M) b) Determine BEP if Fixed Cost is Rs Lakhs, Contribution Margin Per Unit is Rs.20/- (4M) c) Features of Perfect Competitions (3M) d) Features of Public Sector Undertakings (4M) e) Find Inventory Turnover Ratio & Velocity if Sales is Lakhs, Opening Stock is Rs Lakhs, Closing Stock is Rs Lakhs and Number of Days in a Year is 365. (4M) f) Demerits of Accounting Rate of Return (3M) PART-B 2. a) What are the properties of demand curve and also identify different factors influencing demand? b) What are the objectives, types and methods of demand forecasting? 3. a) What are sources, reasons and types internal and external economies of scale? b) Determine P/V Ratio %, Fixed Cost and BEP with the help of following Information: Description Sales(Rs.) Profits(Rs.) a) Determine price & output for both firm & industry in both short run period and long run period under monopolistic competition? b) What are the theories and methods of pricing? 1 of 2

21 Code No: RT21034 R13 SET a) What are the features, merits and demerits of Partnership form of business organization? b) What are the different phases of Business Cycles, identify recent trends of business cycles in Indian and its impact on industry? 6. a) Identify the recording process of Journal Entry in a systematic manner? Date Description Amount Rs Business Commenced with a cash 10,00, Deposited in Bhuvaneswari Bank Ltd 8,00, Goods Purchased from Hindu Heritage Ltd. 50,00, Sold Goods to Amaravathi Infra Ltd. 75,00, Salaries & Rent Paid through bank 8,00, Received a Bank Cheque From Amaravathi Infra Ltd 30,00, Paid to Hindu Heritage Ltd. 25,00, Paid Office Expenses through bank 5,00,000 b) Compute Current Ratio and Quick Ratio. If Cash is Rs.3.50 Lakhs, ST Investments are Rs.6.50 Lakhs, Bank is Rs.5.50 Lakhs, Debtors is Rs.7.50 Lakhs, Creditors is Rs.4.50 Lakhs, Outstanding Expenses are Rs.1.50 Lakhs, Bills Receivables are Rs.2.50 Lakhs, Stock is Rs.6.00 Lakhs and Bills Payables are Rs.8.50 Lakhs,? 7. a) Differentiate Net Present Value Methods, Profitability Index Method and Internal Rate of Return(IRR) technique of capital budgeting? b) Determine NPV & Profitability Index for the following project: Rs. In Lakhs Year Initial Cost Scrap Project-Y % ***** 2 of 2

22 Code No: RT21034 R13 SET - 4 MANAGERIAL ECONIMICS AND FINANCIAL ANALYSIS (Com. to ME, ECE, CSE, IT, ECC, MTE) 1. a) Determine Price Elasticity with an Increase & Decrease by 20% if original Price is (4M) Rs.50/- and Quantity Demanded is 1000 Units b) Determine BEP if Fixed Cost is Rs Lakhs, Contribution Ratio is 33.33% (3M) c) Differentiate Monopoly and Monopolistic Competitions (4M) d) Differentiate Private Limited and Public Limited Companies (3M) e) Find Debtors Turnover Ratio & Velocity if Sales is Lakhs, Opening Balance (4M) of Debtors is Rs Lakhs, Closing Balance of Debtors is Rs Lakhs and Number of Days in a Year is 365. f) Steps in Working Capital Estimation (4M) PART B 2. a) What are the properties of demand curve and also identify different factors influencing demand? b) What are the objectives, types and methods of demand forecasting? 3. a) What are sources, reasons and types internal and external economies of scale? b) Determine Margin of Safety for two periods and BEP with the help of following Information: Description Sales(Rs.) Profits(Rs.) a) Differentiate very short period, short period, and long period markets? How price & output determined for increasing costs, constant costs and decreasing costs to industry? b) What are the different methods of pricing? How strategic pricing different from cost based pricing? 5. a) Compare features, merits and demerits of Departmental Undertakings to that of Public Corporations? b) How Business Cycles help market analysts to forecast new product development? 1 of 2

23 Code No: RT21034 R13 SET a) Identify the recording process of Journal Entry in a systematic manner? Date Description Amount Rs Business Commenced with a cash 5,00, Deposited in Bhuvaneswari Bank Ltd 3,00, Goods Purchased from Hindu Heritage Ltd. 25,00, Sold Goods to Amar Infra Ltd. 50,00, Salaries & Rent Paid through bank 6,00, Received a Cheque From Amar Infra Ltd 40,00, Paid to Hindu Heritage Ltd. 20,00, Draw Cash for Office Expenses 5,00,000 b) Compute Inventory Turnover Ratio & Velocity and Debtors Turnover Ratio & Velocity, assuming there are 360 days in a year. Description Rs. In Lakhs Opening Balance of Debtors 7.50 Closing Balance of Debtors 4.50 Opening Balance of Bills 2.50 Receivables Closing Balance of Bills 1.50 Receivables Sales(60% Credit) Opening Balance of Stock 4.00 Closing Balance of Stock 8.00 Gross Profit 25% 7. a) What is the nature & process of Capital Budgeting Decisions and what are its limitations? b) Determine Internal Rate of Return(IRR) for the following project: Rs. In Lakhs Year Initial Cost Scrap Project-Y % ***** 2 of 2

24 Code No: RT21044 R13 SET - 1 SIGNALS AND SYSTEMS (Com. to ECE, EIE, ECC) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1. a) Write any two properties of Fourier series. (4M) b) What is aliasing? How can it be reduced? (3M) c) Explain about Linearity of a system. (3M) d) The auto-correlation of a continuous time signal is R x (τ) = 10e -2τ. Find its energy (4M) spectral density. e) Explain the concept of region of convergence (ROC) for Laplace transforms. (4M) f) Explain the time reversal property for Z - transform. (4M) 2. a) Define orthogonal signal space and bring out clearly its application in representing a signal. b) Show that whether x(t) = A e -α(t) u(t), α > 0 is an energy signal or not. 3. a) Find the energy spectral density of the signal x(t) = 10 Sinc 10t. Also find its total energy. b) Signal x(t) has Fourier Transform x(f) = [ j2πf ] / [3+( j / 10)]. What is total net area under the signal x(t). 4. a) Explain about LTI system by taking an example. b) Discuss about the Causality and physical reliability of a system. 5. a) For the signal g(t) = 2a/(t 2 +a 2 ),determine the essential Band width B Hz of g(t) such that the energy contained in the spectral components of g(t) of frequencies below B Hz is 99% of signal energy Eg. b) Explain the method of detection of periodic signals in the presence of noise by correlation. 6. a) Explain the Linearity and time shifting properties of Laplace transform. b) Find the Laplace transform of t u (t). List any 2 properties of ROC for Laplace transforms. 7. a) Solve X(Z) = Z 2 (1-1/2 Z -1 ) (1 + Z -1 ) (1 - Z -1 ) b) Explain the properties of ROC for Z Transforms. *****

25 Code No: RT21044 R13 SET - 2 SIGNALS AND SYSTEMS (Com. to ECE, EIE, ECC) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1. a) Differentiate between Fourier series and Fourier transform. (4M) b) Find the Fourier transform of the signal x(t) = 20 sinc (20t). (4M) c) The transfer function of a continuous time system is H(s) = 5/ s+5. Test if the (4M) system is stable? d) Write any 2 Properties of Convolution. (4M) e) Explain the relation between L.T, and F.T. of a signal. (3M) f) Explain the time shifting property for Z - transform. (3M) 2. a) Obtain the condition under which two signals f1(t) & f2 (t) are said to be orthogonal to each other. Hence, prove that Sin (nw 0 t) and Cos (mw 0 t) are orthogonal to each other for all integer values of m,n. b) Explain any 3 properties of Fourier Series. 3. a) Find the Fourier transforms of an even function x e (t) and odd function x o (t) of x(t). b) Differentiate between energy and power signals. 4. a) Explain the difference between the following systems. i) Linear and non-linear systems. ii) Time variant and time invariant systems. b) Find the DTFT of the discrete signal x(n)=nu(n). 5. a) Explain the method of detection of periodic signals in the presence of noise by correlation. b) Explain the relation between auto correlation function and energy/power spectral density function. 6. a) Explain the Scaling and Frequency shifting properties of Laplace transform. b) Find the inverse Laplace transform of F(s) = (s + 4) / ( s+3) (s+2) ; -3 < Re(s) < a) Explain the concept of ROC in Z- transforms and list any 2 properties of the same. b) Find the inverse of Z transform of X (Z) = Z / (3Z 2-4Z+1). *****

26 Code No: RT21044 R13 SET - 3 SIGNALS AND SYSTEMS (Com. to ECE, EIE, ECC) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1. a) Test if the two signals x 1 (t) = A cos 100t, x 2 (t) = 2A cos 200t are orthogonal in the interval 0< t< T where T is time period of x 1 (t). (4M) b) What is Hilbert transform? (3M) c) Y (t) =ax 2 (t) +b. Test for linearity and time variance. (4M) d) Write the Parseval s identity for the discrete Fourier series. (4M) e) Explain any 2 properties of Laplace transform. (4M) f) Explain the linearity property for Z - transform. (3M) PART B 2. a) Prove that the complex exponential functions are orthogonal functions. b) State the properties of Fourier series. 3. a) Explain the importance of Sampling theorem. What is aliasing and how is it avoided. b) An AM signal is given by f(t) = 15 Sin (2π 10 6 t) + [ 5 Cos 2π 10 3 t + 3 Sin2π 10 2 t] Sin 2π 10 6 t. Find the Fourier Transform and draw its spectrum. 4. a) Find the impulse response of series RC limit. Explain the difference between causal and non-causal systems. b) Write notes on Distortion less transmission through a system. 5. a) What is Hilbert Transform and give its importance. Also state Parseval s theorem. b) Explain Cross correlation and Auto correlation of functions. Discuss the properties of correlation function. 6. a) Explain the Time convolution and Scaling properties of Laplace transform. b) Find the inverse Laplace transform of x(s) = 2s / ( s+1) 2 (s+2) ; Re(s) < -2. Given that the ROC lies to the left of s = a) Derive the relation between Z transform and Fourier transform. b) Find the inverse Z-transform of X(Z) = Z / [Z (Z-1) (Z-2) ] for Z > 2. *****

27 Code No: RT21044 R13 SET - 4 SIGNALS AND SYSTEMS (Com. to ECE, EIE, ECC) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1. a) Prove that Sin n ω0 t & Cos m ω0 t are orthogonal to each other. (4M) b) State the time differentiation property of Fourier transform. (3M) c) Test if the system described by the transfer relationship y(t) = t x(t) is linear. (4M) d) Explain the relation between convolution and correlation. (4M) e) L.T [f(2t)] = (3M) f) Distinguish between Laplace, Fourier and Z transforms. (4M) 2. a) State and explain the Dirichlets Conditions. b) Differentiate clearly between the even, odd and half wave symmetry waveforms with respect to their Fourier co-efficients (use appropriate waveform) in their Fourier series representation. 3. a) Determine the Fourier transform of a two sided exponential pulse x (t) = e - t. b) State and prove the following properties of Fourier transform. i) Duality ii) Time-shifting 4. a) Find the impulse response of series RL circuit. What is an LTI system? Explain its properties b) Consider a causal LTI system with frequency response H (jw) = 1 / (3+jw). For a particular input x(t) this system is observed to produce the Output = e -3t u (t) e -4t u (t). Find x(t). 5. a) State and explain Parseval s theorem. b) Discuss the properties of correlation function. 6. a) Discuss any 3 properties of Laplace transform. b) Find the inverse Laplace transform of x(s) = 5(s+5)/ s(s+3) (s+7); Re(s) > a) Prove the differentiation property of Z-transform. Explain the concept of ROC in Z transform. b) Using Z-transforms find x 1 (n) x 2 (n) if x 1 (n) = u(n) and x 2 (n) = (1/2) n u(n). *****