(c) List the limitations of CW radar. Interview questions with sample answers Here are some interview questions that are common for high school admissions interviews, as well as advice on how to answer them and sample answers. Explain in detail about different types of phased array radars and list out their advantages and disadvantages. c (April/May 2012) 7. 14. a) Explain the principle of operation of MTI radar with power oscillator transmitter with neat block diagram? Describe the different noise components present in radar systems 8. 13. 3. Here are a set of actual antenna engineer interview questions, to give you an idea. (b) Compare FM-CW Radar with pulse radar? How it is used in communications? (b) Describe the effect of Pulse repetition frequency on the estimated unambiguous range of radar. You Might Like: Top 50 JQuery Interview Questions & Answers 50 Most Common Interview Questions & Answers in HR round Top 50 Leadership Interview Questions & Answers Resume & CV Mega Guide: How to, Tips, Template, Format, Examples & Samples. (a) With necessary mathematical expressions, describe Range and Doppler measurement if the transmitted signal of a CW Doppler radar is frequency modulated. (a)Explain about the Doppler effect? (b) What are the basic functions of radar? Reference: WomenCo. (April/May 2012) 3. (a) Compare the performance of simultaneous lobing technique with conical scanning techniques? Healthcare employers tend to lean towards asking behavioral-based interview questions. (a) Explain the equivalence between matched filter and correlator? You Might Like: Top 50 JQuery Interview Questions & Answers 50 Most Common Interview Questions & Answers in HR round Top 50 Leadership Interview Questions & Answers Resume & CV Mega Guide: How to, Tips, Template, Format, Examples & Samples. (a) Discuss about staggered pulse repetition frequencies? Illustrate the concept of blind speeds based on the frequency response of a single delay line canceller? Explain the significance of each term. 20. PHP is a web language based on scripts that allow developers to dynamically create generated web pages. (b) Explain how system losses will affect on the Radar Range? You Might Like: Top 50 Project Manager Interview Questions & Answers 50 Most Common Interview Questions & Answers in HR round Top 50 Leadership Interview Questions & Answers Resume & CV Mega Guide: How to, Tips, Template, Format, Examples & Samples. 2) Explain the block diagram of amplitude comparison monopulse radar for single angular coordinate and explain its operation 22. (b) Substantiate the requirement of duplexers in efficient radar systems. What is the impedance of a dipole antenna? Be prepared with examples of your work 7. Draw the block diagram of pulse radar and explain the function of each block and its operation? (b) Draw the simple radar block diagram and explain its operation? (January 2010) 2. 3).Explain the characteristics of a cross –correlation receiver with a block diagram (April/May 2012 & April 2011) 9. (April 2011) 3) Explain the operation of sideband superhetreodyne CW Doppler radar with block diagram. Read our tips from top interview experts and be more prepared at your interview than anyone else. 15 Toughest Interview Questions and Answers! 8. (January 2010) (a) What is the purpose of filter banks in CW radar receivers? (a) Derive the matched filter characteristic? 15. (i) Radar cross section of Target (a) Draw the block diagram and explain the operation of CW Doppler radar using an intermediate frequency in the receiver. (a) Explain the basic concept of phased array antennas. (b) Write about the necessity of using filter banks in CW radar receiver. 4. Obtain the expression for minimum detectable signal in terms of noise bandwidth, noise figure and other relevant parameters. (b) A radar receiver is connected to a 50 ohm resistance antenna that has an equivalent noise resistance of 30 ohm. 12. Write notes on the following: (May/June 2009) 13. Peak pulse transmitted power = 320 kW. (b) What are the specific bands assigned by the ITU for the Radar? (April/May 2012) Why do you want to work in this industry? (b) How blind speeds can be controlled by using staggered PRF? Get the free PDF in your inbox * Send me the PDF. (May 2008) (a) What is False alarm and probability of detection? (c) Why post detection integration is not as efficient as pre-detection integration of radar pulses? 18. (a) Draw the block diagram of IF Doppler bank and explain the operation of it with the help of frequency response of it. (April/May 2012) (a) Explain the principle behind the operation of duplexer and receiver protectors (April 11) Draw the block diagram of a correlation receiver and explain its operation with necessary equations? (b) Explain the two frequency CW technique for measuring the Radar range? 18. Hence derive the expression for its frequency response function. (b) Radiation patterns and feed arrangements for array antennas in a radar system. 6. Instead give a pitch—one that’s (Nov 08) (May/June 2009) ELECTRONICS and COMMUNICATION Engineering Questions and Answers PDF download for freshers experienced.ece interview questions,core technical basic questions. (May/June 2009) Read our tips from top interview experts and be more prepared at your interview than anyone else. Here are some common behavioral interview questions you may be asked during a job interview. 20. (a)Draw the block diagram of a simple CW radar and explain the working of each block? (b) List major applications of radar in civil and military systems. (b) What is the need of delay line canceller? 2).Explain various types of radar displays Suggest the appropriate isolator. What is the maximum range of the radar? b) What are its limitations? 3. What Is Phase? Here's the deal: Don't give your complete employment (or personal) history. (Apr/May ’12) Explain about the following: Antenna Engineer Interview Questions. 7. (January 2010) List its applications. 5. (b) With a (CW) transmit frequency of 5 GHz, calculate the Doppler frequency seen by a stationary radar when the target radial velocity is 100km/h (62.5mph). (May/June 2009) (May 2008) Discuss how the direction and range of an object is determined using this system. Draw the block diagram of a Pulsed radar and explain its operation Explain about the following: (i) Minimum detectable signal (ii) False alarm (iii) Missed detection. �� � w !1AQaq"2�B���� #3R�br� (May/June 09) Minimum detectable power = 10-13 W. 5) What are advantages and disadvantages of FM-CW radar over multiple frequency CW radar. (Apr/May 07) 2011) (a) Explain the operation of FM-CW radar when the modulation is triangular and object is not stationary with help of neat Sketches. Explain the following �W�kwºJ�O�_Oj��Iw0G|�ݖ��@z��ıK�C�I���b�#k`�^��jX�U��3��s��VXYY��7��3I�a�֧gy6�,��M˨#��n�Z0G������$�2ޭ���k����" ���t��Lx���B��I)x��Q�B�2җ��w��a�WȌ� �N�w�ޝ�aY��'�E�rh�m�Ǫ,��Ǐ~s���8�Һ�[�u�k�-�yeuQI��j[�閳yl�H����L� (b) Explain how isolation between transmitter and receiver of a radar system can be achieved if single antenna is used for transmission and reception. 31. What are Maxwell's Equations? (b) An MTI Radar system operating at 10GHz and a repetition rate of 1000Hz receives echoes from an aircraft that is approaching the radar with a radial velocity component of 1 km / sec. (a) What is the beat frequency? (a) Derive the maximum range for a radar system from first principles. 37. (April 2011) 22. 20. 9. (a) What is the difference between single cancellation and double cancellation in delay line cancelers? 8. 24. What is the maximum range of the radar? Write notes on the following : (i) Delay line cancellers (ii) Blind speeds (iii) Clutter attenuation (iv) Transversal filters (May/June 2009) 16. 1. (April/May 2012) – April 2011 Determine the radial velocity component as measured by the radar? (a) Expand Radar? 21. May 2008 3. Explain the operation of CW radar with neat block diagram (b) Write about the frequencies that are used for Radar Communications? (January 2010) 28. 5. (b) Explain how the noise signals are limiting the performance of FMCW altimeter. Given the beat frequency fb (up) = 20kH and fb (down) = 30 kHz for the triangular modulation, the modulating frequency is 1MHz and Doppler frequency shift is 1 kHz. 30. (a) Compare the tracking techniques? 3. (a) Explain in detail the filter characteristics of the delay line canceler. (May 2008 & April/May 2008) This is the easiest way to answer sales interview questions when you have no experience. (b) Write notes on: Noise jamming, Repeater jamming. Where and why is it used in a radar system? (b) Describe any two types of duplexers used in radar receivers (November 2008) 23. April 2012 This is the dreaded, classic, open-ended interview question and likely to be among the first. By Jeff Gillis. In indicating the position of a target, what is the difference between azimuth and elevation? 2. How it is used in FMCW Radar? 11. 16. (April/ May 2012) (b) Describe different noise components present in radar systems. (b) Derive the equation for maximum Radar Range in terms of radar and target parameters. (a) Discuss in detail the quantitative analysis of Receiver noise and hence derive the expression for minimum detectable signal. 9. (June 2006) 22. (November 2008) (a) Write the simplifier version of radar range equation and explain how this equation does not adequately describe the performance of practical radar? (a) With the help of necessary block diagram explain the operation of an MTI radar system with a power amplifier in the transmitter. (a) Explain the principle of the balanced mixer ? a)noise figure b)noise temperature c)system noise (b) With the help of a suitable block diagram, explain the operation of a CW tracking illuminator application of a CW radar. 27. (a) Passive ECM. 22. (November 2008) It is the time interval between two peak pulses. Draw the block diagram of amplitude comparison Monopulse tracking radar in azimuth and elevation directions. (a) A low power, short range radar is solid-state throughout, including a low-noise RF amplifier which gives it an overall noise figure of 4.77dB. (b) Radar cross section of Target (January 2010) 4. (b) Derive an expression for blind speeds of MTI radar. 6. 10. – Here are ten of the most common sales interview questions as well as brief explanations behind why these questions are asked and an example answer. Transmitting gain, G of the antenna = 9.6 X 104 (a) Describe a pulsed Radar System. (b) Explain Monopulse tracking in two angle coordinates? (NOTE: Don’t bring these items into your actual interview. 24. (January 2010) (b) Explain and distinguish between different ECCM options. Explain the basic principle of elementary form of Radar. 13. (b)The average false alarm time is a more significant parameter than the false alarm probability. 11. (April/May 2008) If it is defined to detect a target with a cross section of 12 sqm and the minimum detectable signal is Pmin = -90dBm. Contacting Radar Questions What is the principle of operation of Guided Wave Radar ? (b) Compute the maximum detectable range of a radar system specified below: January 2010 Get the job you want. 29. (a) What are the major drawbacks of a simple CW radar? (a) With an MTI Radar system we can get the radial velocity as well as the distance of the moving target. 17. Explain the following limitations of MTR Radar If the antenna diameter is 1m, IF bandwidth is 500kHz, the operating frequency is 8 GHz and the radar set is supposed to be capable of detecting targets of 5m2 cross sectional area at a maximum distance of 12 km, what must be the peak transmitted pulse power? (a)Draw the block diagram of delay line filter which produces a 3-pole Chebyshev low pass filter characteristics with 0.5db ripple in the pass band? 14. It gives the interviewer an idea of who you are, and how you fit into the role and company at large. 15. 26. (a) Establish the impulse response characteristic for a matched filter. (a) Explain how FM-CW radar is used to find the height of the aircraft above the surface of the earth? May/June 2009 (b) Explain the applications of radar. (Nov2008) (June 2006) (b) Write the applications of CW Radar. 5. (a) Explain the characteristics of a matched filter receiver, with necessary equations. (b) Draw the block diagram of a simple CW radar and explain its working? (b) Discuss the effect of pulse repetition frequency on the receiver. (Apr. (b) Discuss about the frequencies used for radar. 8. (b) Write about the following (i) Coherent detector (ii) Likelihood-ratio receiver (January 2010) (a) Describe briefly various visual displays to view radar echo signals in radar systems. 17. (b) With a block diagram explain the operation of pulse radar (April/May 2007) ��+;�sXhW�v� b�r�23^b>"x���o� ~�I��6���^A� �޷� �u��ok����/���� qNJQWhM�3�(�!o�z�v��������k^կ�x��]�^c��i5$��+=.z=��/� 'u�����w��Ɵ�iW�E��&��{P�M&�f�s�h�*��y�]궶�� ze���q�eV�9�&��b�GVխt�t��4�8�]�#z(�Q�:ݦ��$K43�@���"g�EU�⹥E5]]C+SЃ��$C��wNz��RnP�w ǜg�7���@E4��Xn���������y叝2@�p��>����k��.�uot�Wq�(�"�OjvasZ���j��V�r�=�ݱV�?-��r�9�[jV�7��q����0���Q`.QHH0 � ���Z������2����=��EP���ZIkp���a�z��MV4�T��%�+*������5��j�� �f�ut�?�3�N����a�;�{k�C8�{�z�4.��%�i�VR�q�F+��� �3��"B�ed~H�^��

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