Top 20 Questions of MRE (B-TECH Electronics and Communication Engineering 6th)
Most Repeated Questions
Top 20 Questions of Microwave and radar engg
Previous year question paper with solutions for Top repeated questions of Microwave and radar engg
PTU • B-TECH • Electronics and Communication Engineering • 6th
Browse Top 20 questions of MRE (B-TECH Electronics and Communication Engineering 6th) previous year question papers for Top repeated questions of Microwave and radar engg. This page helps MRE students find semester-wise papers for revision, exam practice, and understanding previous exam patterns. These are the top twenty repeated questions identified from previous year papers for MRE (B-TECH Electronics and Communication Engineering 6th), helping students focus on the most frequently asked topics.
Microwave Tubes: Limitations of conventional tubes, construction, operation and properties of
Klystron Amplifier, reflex Klystron, Magnetron, Travelling Wave Tube (TWT), Backward Wave
Oscillator (BWO), Crossed field amplifiers.
Microwave Solid State Devices: Limitation of conventional solid state devices at Microwaves,
Transistors (Bipolar, FET), Diodes (Tunnel, Varactor, PIN), Transferred Electron Devices (Gunn
diode), Avalanche transit time effect (IMPATT, TRAPATT, SBD), Microwave Amplification by
Stimulated Emission of Radiation (MASER).
Microwave Components: Analysis of Microwave components using s-parameters, Junctions (E,
H, Hybrid), Directional coupler, Bends and Corners, Microwave posts, S.S. tuners, Attenuators,
Phase shifter, Ferrite devices (Isolator, Circulator, Gyrator), Cavity resonator, Matched termination.
Microwave Measurements: Power measurements using calorimeters and bolometers,
Measurement of Standing Wave Ratio (SWR), Frequency and wavelength, Microwave bridges.
Introduction to Radar Systems: Basic Principle: Block diagram and operation of Radar, Radar
range Equation, Pulse Repetition Frequency (PRF) and Range Ambiguities, Applications of Radar.
Doppler Radars: Doppler determination of velocity, Continuous Wave (CW) radar and its
limitations, Frequency Modulated Continuous Wave (FMCW) radar, Basic principle and operation of
Moving Target Indicator (MTI) radar, Delay line cancellers, Blind speeds and staggered PRFs. Scanning
and Tracking Techniques: Various scanning techniques (Horizontal, vertical, spiral, palmer, raster,
nodding), Angle tracking systems (Lobe switching, conical scan, monopulse), Range tracking systems,
Doppler (velocity) tracking systems.
Top repeated questions
Top 20-
1.
Derive Radar range equation.
Appeared 2 times
Appeared in: May 2025, May 2023
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2.
Explain the different methods used for measuring microwave frequency.
Appeared 2 times
Appeared in: May 2025, May 2023
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3.
Explain the modes of Gunn diode.
Appeared 2 times
Appeared in: May 2025, May 2023
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4.
A reflex klystron operates under the following conditions: V0 = 600 V, Rsh = 15 kΩ, fr = 9 GHz, L = 1 mm, e1/mi = 1.759 x 10^11. The tube is oscillating at fr at the peak of the n = 2 or 1 3/4 mode. Assume that the transit time through the gap and beam loading to be neglected. Determine, the value of the repeller voltage, the direct current necessary to give a microwave gap voltage of 200 V, and the electronic efficiency under this condition.
Appeared 1 times
Appeared in: May 2023
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5.
Explain with neat diagram, the working of CW radar with non-zero IF.
Appeared 1 times
Appeared in: May 2023
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