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-cavity amplifier klystron has the following parameters : Beam Voltage : VO = 900 V Beam Current : I O = 30 mA Frequency : f = 8 GHz Gap spacing in either cavity : d = 1 mm Spacing between the two cavities : L = 4 cm Effective shunt impedance : RSh = 40 K Determine: a) The electron velocity b) The dc electron transit time c) The input voltage for maximum output voltage d) The voltage gain in decibels.
Show that the theoretical efficiency of reflex klystron is 22.78%. How is tuning achieved in reflex klystron oscillators? Mention the tuning range of such a device.
3.a)
How is bunching achieved in a cavity magnetron? Explain the phase focusing effect. Discuss the Performance characteristics of a magnetrons with the help of a Reike diagram.
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4.a) b)
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Describe the principle of operation and characteristics of a TRAPATT diode, with neat illustrations. Draw the equivalent circuit of a typical parametric amplifier and explain the parameters involved. For a rectangular waveguide resonator operating in TE101 mode, derive a general expression for the Q.
6.
What is a Gyrator? Describe how isolators can be realized by using Gyrators and Hybrids? Write down the scattering matrix for an ideal Gyrator.
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Explain the measurement of VSWR and ATTENUATION using a sweeper
8.a) b) c)
Why is a micro stripline referred to as an “Open – Stripline” Does micro stripline support TEM modes? Justify the answer. What are the disadvantages of using micro stripline? @@@@@
Code No:320455 III-B.Tech. II Semester Examinations April, 2003 ...
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-cavity amplifier klystron has the following parameters :.
6.a) Explain flattening and factoring with examples. b) Explain the need for functional verification after RTL description and after · synthesis. 7.a) What are the ...
Discuss about the Hazards of Heat Transfer Operation. 4. Discuss about : · a) Float Switches · b) Bubbler type Level Gauges. 5. Write about industrial safety ...
LASER AND FIBER OPTICS IN MEDICINE · ( Bio-medical Engineering ) ... b) Write a note on medical surveillance. 6.a) What are the advance reactions to laser ...
SATELLITE COMMUNICATIONS · ( Electronics and Communication Engineering ) ... b) Draw the block diagram of a satellite communication and explain each ...
b) The annual input to a sub-transmission system is 1,75,200 MW hrs. On the peak- · load day of the year, the maximum demand is 50 MW and the energy input ...
The disk is of 200 tracks numbered 1 to 199. The queue of requests are kept in · FIFO order is 86, 147, 91, 177, 94, 150, 102, 175, 130. The algorithms are.
b) By proving Parseval's theorem show that Fourier transform is an isometry. 4.a) Write three properties of auto correlation function. b) Let r(t) represent a ramp ...
c) Discuss the mechanism of creep in deformation of metals. 4.a) With the help of band theory explain the conducting behavior of conductors, · semi-conductors ...
Write a detailed note on particle accelerators and Neutron sources. 3. Describe briefly about the interaction of Nuclear Radiation with matter. 4. Explain clearly about · a) Geiger Muller Counter · b) Scintillating detector. 5. Write a detailed note
II-B.Tech. II Semester Examinations April/May, 2003 · MECHANICS OF FLUIDS AND HYDRAULIC MACHINES · (common to Electronics and ... isothermal conditions if the pressure and density at sea level at this temperature · are 101.325KN/m · 2 · and 1.208Kg/m
... implementation issues that arise in interprocess communication. b) Explain memory protection based on the protection keys. 7.a) Explain briefly the functions of physical IOCS. b) With neat figure explain indexed allocation. 8. Write short notes o
Code No.: 320555. III-B.Tech. II-Semester Examinations April 2003 · COMPUTER GRAPHICS · (common to Computer Science and Engineering, Computer Science and · Information Technology.) Time: 3 Hours · Max. Marks: 70 · Answer any FIVE questions · All ques
b) Write a note on QMR. 5.a) Explain how computers can be used for the care of renal disorders. b) Explain the use of computers in the care of critically ill patients. 6.a) How are computers used for handicapped subjects? b) Write a note on ISDN in m
3.a) The expression giving work done in gas following polytropic compression can · not be used for ... discharge air to run a frictionless turbine. Atmospheric ...
Code No.: 320255. III B.Tech II-Semester Examinations April 2003 · PULSE AND DIGITAL CIRCUITS · (Electrical And Electronics Engineering) · Time: 3 Hours · Max. Marks: 70 · Answer any FIVE questions · All questions carry equal marks · - - - · 1.a) A s
cos (2пn/N) · b) Show that out put sequence y(n) of an LTI system is the convolution of input · sequence x(n) and the impulse response of the system h(n). c) A digital system is characterized by the following difference equation: · Y(n) = x(n)+ay(n-
Of what concern would the formal organization structure be to an information · systems designer? 3. âInventory Management System is a vital area of ...
How are network techniques useful to prevent time and cost over runs in project · implementation? 3. What is human resource planning? What are its objectives ...
Max.Marks:70 · Answer any FIVE questions · All questions carry equal marks · --- · 1. Solve the following equations using Cramer's rule: · x+3y+6z = 2; 3x-y+4z ...