III/IV B.Tech. DEGREE EXAMINATIONS, NOV/DEC-2017

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1 EC 314 (R-15) Total No. of Questions :09] [Total No. of Pages : 02 III/IV B.Tech. DEGREE EXAMINATIONS, NOV/DEC-2017 First Semester ELECTRONICS & COMMUNICATION ENGINEERING COMPUTER ORGANISATION AND OPERATING SYSTEM Time: Three Hours Answer Question No.1 Compulsory Answer ONE Question from each Unit Maximum marks:60 12X1=12 M 4X12=48 M 1. a) What are the basic functional units, of a computer? b) What is multiprogramming or multitasking? c) Expland CISC and RISC? d) What is the use of cache memory? e) Discuss about OS as system software? f) What is Process? g) Define Paging? h) What are the registers generally contained in the processor? i) What is the Logical address space? j) Explain MDR and MAR. k) What are the properties of Scheduling Algorithms? l) What are the Components of a Linux System? UNIT-I 2. a) Draw the CPU organization and explain the basic functional units of a computer? b) Explain the speed up features of modern computers? 3. a) What are hardwired and micro programmed controls? Compare the hardwired control with micro programmed control in terms of complexity of the instruction set, ease of modification and clock speed. b) Explain about Logic micro operations. 1 P.T.O

2 UNIT-II 4. a) Define Interrupt. What are the different types of interrupts? b) What are reduced instructions set computers (RISC)? Draw and explain the basic RISC architecture. 5. a) List and explain different instruction formats? b) Write in detail about various addressing modes. UNIT-III 6. a) Discuss in detail about Operating systems structures and system calls? b) What are Process scheduling criteria? Give various algorithms and their evolution? 7. a) Discuss the operating-system services provided for users. b) Explain about multiprocessor scheduling. UNIT-IV 8. a) What is paging? Describe the basic method of paging. Explain the structure of page table and its types in detail. b) Write short notes on Demand segmentation. 9. Discuss the following i) Virtual Memory ii) Page Replacement iii) Thrashing 2

3 EE/EC 314 (CR) Total No. of Questions :09] [Total No. of Pages : 02 III/IV B.Tech. DEGREE EXAMINATIONS, NOV/DEC-2017 First Semester EC/EE LINEAR INTEGRATED CIRCUITS & APPLICATIONS Time: Three Hours Maximum marks:70 Answer Question No.1 Compulsory 14X1=14 M Answer ONE Question from each Unit 4X14=56 M 1. Answer the following a) Define Slew rate. b) What is Differentiator c) What is the principle of oscillator d) What is a precision diode. e) Draw the circuit diagram of all pass filter using op-amp f) Define capture range of PLL g) What is the gain equation of an inverting amplifier. h) What is zero crossing detector i) How can you calculate the cut off frequency of a filter. j) What is input bias current k) What is Low pass filter l) Draw the circuit diagram for Non-inverting amplifier. m) Draw the pin diagram of IC 741 n) Define clamper circuit. UNIT-I 2. Explain the operation of Instrumentation amplifier with neat diagram. 3. a) Draw the circuit of current to voltage converter and explain. b) Draw the diagram of basic integrator and derive the equation for its output voltage. P.T.O 1

4 UNIT-II 4. a) Explain the operation of comparator with neat diagram and waveforms. b) Explain the operation of Phase shift oscillator. 5. a) Explain the operation of Square wave generator with neat diagram. b) A Schmitt trigger with upper threshold level VLT=0V and hysteresis width VH=0.2 V converts a 10kHZ sine wave of amplitude 8V p-p into a square wave. Calculate the time duration of the negative and positive portion of the waveform. UNIT-III 6. a) Draw and explain the peak detector with neat diagram. b) Draw and explain the operation of successive approximation ADC. 7. a) Design a V to I converter using op-amp and explain its operation. b) What is clamper? With circuit diagram explain the operation of positive and negative clampers. UNIT-IV 8. a) Explain positive and negative voltage regulator. b) Explain the operation of mono stable multi vibrator using 555 timer. 9. a) Design a first order low pass filter with a cut off frequency of 4kHz and a pass band gain of 2. b) Design a wide band pass filter with f L =200 Hz and f H =1 khz and a pass band gain=4. Draw the frequency response and find Q factor. 2

5 EC/EE 314 (RR) Total No. of Questions :09] [Total No. of Pages : 02 III/IV B.Tech. DEGREE EXAMINATIONS, APRIL/MAY First Semester EC/EE OOPS & OS Time: Three Hours Answer Question No.1 Compulsory. Answer One Question from each Unit. 1. Define the following a) BST b) Complexity of sort c) Type conversion d) Pointer e) Constant f) Object g) Token h) Inheritance i) Type cast operator j) Member function k) Demand paging l) Process control m) Multithreading n) Fragment UNIT-I 2. a) Explain about Benefits of OOPS. b) Explain about Applications of OOPS. 3. a) Explain the Basic data types of C++ b) Explain the derived data types of C++ UNIT-II 4. a) Explain about Function Prototyping b) Explain about Function overloading 5. a) Explain about friendly functions 1 Maximum marks:70 14X1=14M 4X14=56 M P.T.O

6 b) Explain about member functions. UNIT-III 6. a) Explain about Computer system structures. b) Explain about Process concepts. 7. a) Explain about criteria in scheduling b) Explain algorithm evolution UNIT-IV 8. a) Explain about contiguous allocation b) Explain about segmentation with paging 9. a) Explain about Demand segmentation. b) Explain about Allocation of frames. 2

7 EE/EC 314 (CR) Total No. of Questions :09] [Total No. of Pages : 02 III/IV B.Tech. DEGREE EXAMINATIONS, APRIL/MAY First Semester EE/EC LINEAR INTEGRATED CIRCUITS & APPLICATIONS Time: Three Hours Answer Question No.1 Compulsory. Answer One Question from each Unit. 1. a) Draw the symbol of Op-amp. b) Define Input offset current. c) What is slew rate? d) Define input impedance. e) Write any two applications of Op-amp. f) What is voltage follower? g) Define LTP. h) Draw the circuit diagram of Integrator using Op-amp. i) What is DC restorer? j) Define resolution of DAC k) Define duty cycle. l) Draw the pin diagram of IC555 Timer. m) What is all pass filter? n) Define Locking range. UNIT-I Maximum marks:70 14X1=14M 4X14=56 M 2. a) Draw the block diagram of Operational Amplifier and explain each block in detail b) What are the characteristics of Instrumentation amplifier and explain its circuit. 3. a) Explain about Differentiator circuit and derive its output voltage. b) Discuss about Operational Amplifier DC characteristics. UNIT-II 4. a) With neat circuit diagram explain about Phase shift oscillator and write the advantages. b) What is basic comparator and explain about Voltage comparators. 1 P.T.O

8 5. a) Explain the operation of Schmitt Trigger with neat sketches. b) Discuss about Wein bridge oscillator and derive the expression for frequency of oscillation. UNIT-III 6. a) Explain about the working of Successive approximation type A/D converter with neat sketches. b) What is Peak detector? And explain basic Peak detector circuit with necessary waveforms. 7. a) With neat circuit explain the operation of Binary weighted resistor type D/A converter. b) What is Clipper? And explain about Negative and Positive clippers with wave forms. UNIT-IV 8. a) Discuss the operation of IC555 as Monostable multivibrator? Draw the waveforms and explain. b) Design a Low pass filter for 10KHz frequency and Pass band gain of a) Discuss about Narrow Band pass filter with neat circuit diagram. b) Explain about IC565 PLL and list its applications. 2

LINEAR IC APPLICATIONS

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