Code No. 321053 III B.Tech. II-Semester Supplementary Examinations, November-2003 COMMUNICATION ENGINEERING (Common to Electronics and Instrumentation Engineering and Bio-Medical Engineering) Time: 3 hours Max. Marks: 70 Answer any FIVE questions All questions carry equal marks --1.a) Define amplitude modulation and modulation index. Use a sketch of sinusoidally modulated AM waveform to help definition. b) The tuned circuit of the oscillator in a simple AM transmitter employs a 50 microhenry and a 1 nanofarad capacitor. If the oscillator output is modulated by audio frequencies upto 10KHz, what is the frequency range occupied by the sidebands?
Derive the expression for FM wave in terms of modulation index and carrier frequency. The equation of an angle-modulated voltage is v=IOsin(I08t+3sinI04t). What form of angle modulation is this? Calculate the carrier and modulating frequencies, the modulation index and deviation, the power dissipated in a 100- ohm resistor. With a block diagram , explain the working of phase modulated FM transmitter? Explain the working of frequency modulated transmitters using reactance tube modulators.
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Write short notes on: i) Frequency synthesizers ii) Spurious responses in radio receivers Bring out the factors influencing the choice of IF and indicate the values of IF employed in each of the following cases (i) AM Broadcast receivers (ii) FM Broadcast receiver (iii) TV receivers in the VHF and UHF bands.
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What are the various noise components in a transistor ?. Deduce its noise voltage equivalent circuit. A mixture stage has a noise figure of 20 db and this is preceded by an amplifier that has a noise figure of 9 db and an average powergain of 15 db. Calculate the overall noise figure referred to the input.
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Distinguish between PAM, PWM and PPM. What is TDM? Distinguish between synchronous and asynchronous TDM.
7.a) b)
Draw the block diagram of FSK transmitter and explain. Draw the block diagram of non coherent receiver for the detection of binary FSK signals. Contd..2
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6.a) b)
Code No: 321053
c)
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Explain the two modes for transmitting binary data across a link. Compare the two methods of serial transmission. Discuss the advantages and disadvantages of each. Explain the concept of modem.
3.a) With a block diagram , explain the working of phase modulated FM transmitter? b) Explain the working of frequency modulated transmitters using reactance · tube modulators. 4.a) Write short notes on: · i) Frequency synthesizers ii) Spurious responses in radio receivers · b) Bring out the factors influencing the choice of ...
synchronizing pulse at the end of each code word. Determine the bit rate of the · resulting PCM signal. 7.a) What is 'switching'. Where do you apply switching techniques. b) Distinguish between circuit, message and packet switching. 8.a) Derive the e
b) Design a hydrodynamic full journal bearing for a centrifugal pump of 200mm ... 1.a) Discuss in detail about materials and applications of journal bearing. ... Section = 50 mm And the thickness of the web = 10 mm, the diameter aI1d.
1.a) What are the improvements in 8086 over the 8085 microprocessor? Explain in · detail. b) What are the different directives in 8086 programming? Explain each one of · them with an example. 2.a) Determine the memory location addressed by the follow
6.a) Design a decoding logic circuit to interface two 16k x 8 SRAM chips to 8086 · starting at address 40000h. b) Explain in brief the Interrupt Structure of 8086.
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
III B.Tech. II-Semester Supplementary Examinations, November-2003. MANAGEMENT SCIENCE · (Common to Mechanical Engineering, Production Engineering, Mechanical · Manufacturing Engineering and Metallurgy and Material Technology) · Time: 3 hours · Max. M
Code No:320455. III-B.Tech. II Semester Examinations April, 2003 · MICROWAVE ENGINEERING · (Electronics and Communication Engineering) · Time: 3 Hours · Max. Marks: 70 · Answer any FIVE questions · All questions carry equal marks · --- · 1. A two-cav
Explain the following top-down parsing methods with example. a) Recursive-Descent parsing · b) Predictive parser · 5.a) Explain about the specification of a ...
system? Explain briefly about the various instructions used and also the possible · variations in each ... d) Storage mechanism and (e)Data transfer rate. ... b) Explain the direct memory access (DMA) mechanism of transfer of date between.
The following are the summarized Profit and Loss A/C of Joy products ltd. for the year · ending 31 · st · December 1997 and the Balance sheet as on that date.
(b) the limiting value of the wind pressure so that no point in the base is under ... pitches of the rivets in the two rows if the working stresses are not to exceed.
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:.
... 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
2.a) With a neat sketch explain the operation of a cupola, its charge composition and · control of the melt composition. b) Briefly explain the pressure die casting ...
b) Explain heat treatment given to high speed tool steels. 7. Explain structure, properties and applications of any THREE of the following: · (a) Al-Si alloys (b) ...
b) Draw a graph showing the refractive index distribution of central core cladded · optical fibre and explain the plot. 2.a) Give any three applications of optical ...
ARTIFICIAL INTELLIGENCE · ( Common to ... (b) Distinguish between propositional and predicate logics. What are ... (b) Explain Bayesian method of reasoning.
Write a short note on 'compressor surge and its prevention'. 6.a) In rocket propulsion, explain the following: · (i) Thrust coefficient (ii) Characteristic velocity (iii) Specific impulse. b) Derive the 'Generalised Thrust Equation, of a rocket from
Code No: 320452. III-B.Tech II-Semester Supplementary Examination December2002/January 2003 · LINEAR DIGITAL I.C.APPLICATIONS · (Common to Electronics and Communication Engineering, · Electronics and Control Engineering, Electronics Instrumentation ·
DATA COMMUNICATIONS · (Common to Computer Science & Engineering and Computer Science & · Information Technology) · Time:3 hours · Max.Marks:70 · Answer any FIVE questions · All questions carry equal Marks · --- · 1.a) What is a constellation diagram
Code No: NR311901. NR. III B.Tech I Semester Supplimentary Examinations, May/Jun 2009 · DIGITAL SYSTEMS DESIGN · (Electronics & Computer Engineering) ... that check the eight possible binary values of three control variables x, y and ... (b) Tabulate
c) What is the difference between the BSA instruction and the interrupt cycle? 8. Write short notes on any two: · a) RISC and CISC Processors. b) Priority interrupt ...
