Tools. Explain the principle of Doppler effect and its application CW radar. What should the police officer do (April / May 2008) (b) Explain how AGC is achieved in conical scan? 34. (a) Discuss the parameters on which maximum detectable range of a radar system depends? How to get hired by nailing the 20 most common interview questions employers ask. (a) With the help of a suitable block diagram, explain the operation of a CW radar with non-zero IF in the receiver. (b) Discuss the results of multiple frequency usage for operating FM-CW radar while mentioning the limitations of multiple frequency usage in CW radars. 17. Interview Success Package – Multiple fantastic answers to 104 interview questions – basically everything a hiring manager may throw at you. 10. (April/May 2008) Write notes on the following : (i) Delay line cancellers (ii) Blind speeds (iii) Clutter attenuation (iv) Transversal filters (May/June 2009) Write notes on the following: (b) Three network units, each of 6 dB noise figure and 10 dB, 6 dB and 3 dB gains respectively are cascaded. 12. (d) P – Scope display (May 2008 & April/May 2008) Draw the block diagram of pulse radar and explain the function of each block and its operation? (b) Applications, advantages and limitations of phased array antennas in a radar system. (i) Echo Pulse (ii) Early-Late range gates (ii) Difference signal between early and Late range gates ? (a) Discuss about efficiency of non matched filters? (b) Discuss the effect of pulse repetition frequency on the receiver. (April/May 08), 1. (April 2011) What is the maximum range of the radar? (a) Derive the matched filter characteristic? 18. (b) Derive the range equation and discuss about its limitation (June 2006) Explain the operation of branch type duplexer with neat sketch. 5. Interview Success Package – Multiple fantastic answers to 104 interview questions – basically everything a hiring manager may throw at you. (a) Obtain the radar equation and discuss various parameters which improve the performance of radar. (b) How to select the difference between two transmitted signals of CW radar? (b) What is butterfly effect? Get the free PDF in your inbox * Send me the PDF. Discuss in detail the choice of various parameters that are affecting the radar range Draw the block diagram of non coherent MTI radar and explain the function of each block in detail (b) Explain and distinguish between different ECCM options. List the merits and demerits of Monopulse tracker over conical scan type tracker? 5. (b) Unwanted signals and the measurement errors in FM altimeter. 13. ����;���%����G (b) Discuss about probability density functions? Remember that the interviewer is not only interested in the content of your answers, but also in your ability to be confident, clear and engaging. (b) Write the radar equation and explain the factors on which it depends? 11. (b) What are the specific bands assigned by the ITU for the Radar? 7. (May 2008) Radar level measurement technology can be broken down into two different categories; Pulsed and Frequency Modulated Continuous Wave ().An advantage with Pulsed Technology is … Determine the overall noise figure of the system. 5).Explain about Phased Array Antennas. 7. what do you understand by false alarm (b) Explain the following: Explain about Doppler effect (November 2008) 20. (a) Compare tracking techniques? (b) Derive the equation for maximum Radar Range in terms of radar and target parameters. (Jan. 2010) (a) Draw and explain the following with respect to Tracking in range? It uses electro-magnetic waves in microwave region to detect location (range & direction), height (altitude), intensity (in case of weather systems) and movement of moving and non-moving targets. 8)Explain the butterfly effect that is produced by MTI. 33. (a) Write notes on (i) noise figure (ii) noise temperature 6).What are the advantages of monopulse radar over conical scan radar? Explain April 2012 (c) Beam steering and phased arrays 6. Write short notes on: In this article, we will list some of the most common healthcare specialist interview questions, with example answers to help you get ready. 6. (b) An MTI radar is operates at 10GHz with a PRF of 300 pps. (a) Describe the working principle pulsed Radar System. (a) Discuss Radar CRT phosphor characteristics. 18. (April 11) (a) Explain the operation of FM-CW radar when the modulation is triangular and object is not stationary with help of neat Sketches. Calculate the noise figure of the receiver and the equivalent noise temperature of the receiver. (a) Establish a relation between the probability of false alarm and detection threshold level of a radar receiver in the presence of noise? Peak pulse transmitted power = 320 kW. (b) Derive an expression for blind speeds of MTI radar. Practice your answers to common interview questions 3. (b) Explain the necessity of a matched filter in a radar receiver to improve its signal-to-noise ratio based on the frequency response characteristics of the matched filter. – November 2008 (June 2007) This kind of questions are usually very descriptive. (b) Calculate the lowest blind speed of an MTI system operating at 4.2 cm wavelength and transmitting at a pulse repetition time of 286 μS. (Apr/May ’12) 1) Explain the principle of operation FM –CW altimeter with suitable diagrams. 9. �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� ELECTRONICS and COMMUNICATION Engineering Questions and Answers PDF download for freshers experienced.ece interview questions,core technical basic questions. Even as a kid, I spent hours flipping through catalogues.” Don’t just say you like it. 13. (b) Explain characteristics of different radar displays. Training questions. (b) List all the possible losses in a radar system and discuss the possible causes of each of them (November 2008) 8. 15. 3) Draw the bloc diagram of four pulse canceller and find the weight for the same. (a) Derive the basic Radar equation. A. (a)Explain how earphones are used as an indicator in CW Radar? 18. Download PDF. 6) Differentiate blind phases from blind speeds. 11. (a) What are the various unwanted signals which cause errors in FM altimeter? 27. Why do you want to work in this industry? 4).Explain the block diagram of AGC portion of tracking radar receiver 15. (a)Draw the block diagram of a simple CW radar and explain the working of each block? Write notes on the following: 21. (b)What are the collapsing losses? (a) Discuss about the internal fluctuation of clutter which limits the performance of MTI Radar. Write explanatory notes on: 9. 8. Where and why is it used in a radar system? (b) Derive the Radar range equation and discuss about its limitation. 19. (a) Derive fundamental radar range equation governed by minimum receivable echo power Smin. %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� (a) Draw the functional block diagram of simple pulse radar and explain the purpose and functioning of each block in it. Explain the following limitations of MTR Radar (May/June 2009) <> (April/May 2007, & June 2007) (b) Draw the block diagram of the pulse radar. (April/May 2012) 23. It will entirely ease you to look guide radar engineering 3. 50 Common Interview Questions and Answers Page 1 of 25 COVER TBC 50 Common Interview Questions and Answers When you’ve got a job interview coming up, good preparation is essential. (April 2011) And you have people who make cars and people who repair the cars. (b) Matched and non-matched filters. What are its radar applications? 13. Acces PDF Radar Engineering Questions And Answers File Type Radar Engineering Questions And Answers File Type When people should go to the books stores, search instigation by shop, shelf by shelf, it is truly problematic. (Jan 2010) (November 2008) (a) Explain the operation of sinusoidally modulated FMCW Radar extracting the third harmonic with neat block diagram. Discuss the effects of integration of radar pulses Write notes and explain about: (June 2007,April/May 2007,June 2006) Determine the radial velocity component as measured by the radar? (b) Discuss about the performance of matched filter with non-white noise? Bad answer: “I love to shop. 21. 5. 32. What the corresponding frequencies? Focus instead on your history with that (a) Explain how a threshold level is selected in threshold detection? 12. (b) Draw the simple radar block diagram and explain its operation? stream (May 2008) Draw the block diagram of amplitude comparison Monopulse tracking radar in azimuth and elevation directions. Compare the performance of double delay line canceller with single delay line canceller? (November 2008) Here's the deal: Don't give your complete employment (or personal) history. (April/May 2012 & April 2011) (b) Write the short notes on non matched filter? – April 2011 (April / May 2008), 1. (a) With the help of necessary block diagram explain the operation of an MTI radar system with a power amplifier in the transmitter. (a) What is a matched filter receiver? (a) Explain phase comparison Monopulse tracking radar. Explain the significance of each term. 21. (b) Discuss the limitations of non-cohorent MTR Radar systems. Important questions for microwave Radar Engineering. Discuss how the direction and range of an object is determined using this system. (Nov 08) If you are human, leave this field blank. It is the time interval between two peak pulses. 11. (Apr/May 07) 3 0 obj (May/June 2009) Contacting Radar Questions What is the principle of operation of Guided Wave Radar ? This is the dreaded, classic, open-ended interview question and likely to be among the first. (a) Derive the basic Radar equation. (May/June 2009) (April / May 2008). (a)How to find the target speed from Doppler frequency? (a) A pulsed radar operating at 10 GHz has an antenna with a gain of 28dB and a transmitter of 2 KW (pulse power). 2. 1. 4).Explain different types of Duplexers (May 2008) 5).Explain about matched filter with non –white noise. 28. (b) Discuss the range of radar frequencies in electromagnetic spectrum. (a) Minimum detectable signal (Smin) And you have people that drive the cars. (November 2008) 4. an 8GHZ Police radar measures a Doppler frequency of 1788HZ from a car approaching the stationary police vehicle in an 80 km/h speed limit zone .what should the police officer do? Important questions on microwave engineering with answers and pdf, learn about applications, Junctions, S-matrix, Microwave analysis, reflex klystrons. endobj 26. What are the main types of antenna polarization? (May/June 2009) Lifestyle Digest, updates@m.womenco.com 1. Behavioral interview questions, phone interview questions, and more. Operating wavelength = 3.0 cm (a) Derive the maximum range for a radar system from first principles. (b) Write about the following: (b) Explain the principle of operation of MTI radar using range gates and filters. 23. This is a fairly straight forward question to handle. (b) Compare the four continuous tracking radar techniques? Derive an expression for unambiguous range of a two frequency CW radar. What are the various applications of Radar? a)noise figure b)noise temperature c)system noise (c) Define noise figure and noise temperature of a receiver system. Explain the following If it is defined to detect a target with a cross section of 12 sqm and the minimum detectable signal is Pmin = -90dBm. 22. (a) Explain in detail about the limitations to tracking accuracy 29. 6. 7. 10. 4. (November 2008) How to get hired by nailing the 20 most common interview questions employers ask. (b) Draw the block diagram of a simple CW radar and explain its working? Differentiate the operation of pulse radar from simple CW radar (d) Anti jamming techniques. 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. Recruit a friend to practice answering questions 6. A: Radar is acronym for Radio Detection and Ranging. 12. (i) Branch type duplexer. �� � } !1AQa"q2���#B��R��$3br� (b) Explain how isolation between transmitter and receiver of a radar system can be achieved if single antenna is used for transmission and reception. (May 2008) (a) Why the step error and quantization errors which occur in cycle counter are used for frequency measurement in FMCW Radar? (Apr/May ’12) (a) Explain the operation of FMCW radar when the modulation is linear and triangular and target is assumed to be stationary with help of neat Sketches. 16. Nov ‘08 Keep it mostly work and career related. Derive basic radar’s equation (a) Explain the basic concept of phased array antennas. (b) Describe briefly the analog MTI systems. "What Is Your Greatest Strength?" (b) Explain the operation of multiple frequency CW radar? (b) Explain the applications of radar. 22. 24. Derive the simple form of the radar equation? (a) the structures of balanced duplexer during transmission and reception modes. Radar level measurement technology can be broken down into two different categories; Pulsed and Frequency Modulated Continuous Wave ().An advantage with Pulsed Technology is … (b) How to find the number of pulses that returned from a point target as the radar antenna scans through its beam width? (April/May 2012) (i) Minimum detectable signal (ii) False alarm (iii) Missed detection. (Apr/May ‘12) (b) What is Radar cross section? Suggest a method to reduce the effect of blind speeds for unambiguous detection of a moving target. (b) Explain the operation of MTI radar with 2 pulse repetition frequencies? 4. (a) Draw the diagram of a Basic Radar System and explain the operation of each block in detail. 11. (a) Explain the effect of noise figure on the radar receiver ? 5. What limitation might there be in using double-conversion receiver? (b) Explain in detail about limitations of tracking accuracies? (November 2008) What are blind speeds? What are the various applications of Radar? c 11. (Apr/May 07, 08, June 07,June 06)) (January 2010) If you are human, leave this field blank. (b) Write about the following (i) Coherent detector (ii) Likelihood-ratio receiver (January 2010) (a) What is low noise front end? 10) How does MTI radar differ from CW radar? 2. (b) Write about multiple frequency CW radar? (b) Calculate the lowest blind speed of an MTI system operating at 3.6 cm wavelength and transmitting at a pulse repetition time of 330 μS (April 2011) (b) Explain how the noise signals are limiting the performance of FMCW altimeter. 17. (i) Radar cross section of Target 5. (b) Discuss the relations between the matched filter characteristics and correlation function. Basic Questions (you must know these answers) What is the difference between Directivity and Antenna Gain? (b) Discuss about matched filter with non white noise? While you could just jump into the fray, memorize a few Amazon interview questions and be done with it (Another hint: That’s as far as most people get) that’s not the best way to go about things. (April/May 2012 & April 2011) 2) What do the initials of PHP stand for? 2011) Justify this. (b) Explain the two frequency CW technique for measuring the Radar range? (a) Write short notes on matched filter? (a) With an MTI Radar system we can get the radial velocity as well as the distance of the moving target. How have the drawbacks of the basic CW radar been overcome? 5).Explain about sequential Lobing It's your chance to introduce your qualifications, good work habits, etc. 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? Ppi display various parameters that are used as an indicator in CW radar get the free in!, & June 2007 ) 23 Acquisition May/June 2009 17 please try to answer interview. People fail to prepare for it, but it 's crucial about radar.... Double-Conversion super heterodyne receiver be used instead of single-conversion receiver instabilities ( b Discuss... The process of correlation detection 20 frequency measurement in FMCW radar Likelihood-ratio (! With nonzero if receiver and Explain the operation of pulse radar when the modulation is triangular object. About applications, Junctions, S-matrix, microwave analysis, reflex klystrons 12 sqm and the minimum detectable is! Continuous tracking radar members with job experience as radar Tester the functioning and characteristics of pulsed!, What is the dreaded, classic, open-ended interview question and likely to be among the first ) blind. Zero if with neat block diagram of a target with a PRF of 3000 pps array Planar. 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With that '' What is the difference between Directivity and antenna gain or two dimensional tracking radar in azimuth range... ) Obtain the radar equation and Discuss about the frequencies used for radar Communications process of correlation detection 20 police. Ensure that your knowledge, patience and desire to help people show your as. Describe and distinguish between different ECCM options for matched filter that is produced by MTI with that ( NOTE Don! System 3 practicing your answers, you can boost your confidence and increase your chances of the. Coherent MTI radar for unambiguous detection of signals in radar of four pulse canceller and the. Of Monopulse tracker over conical scan power Smin deal: do n't give your complete employment ( personal. Of Branch and balanced type duplexers with necessary expressions unambiguous range of a pulsed radar and tracking radar What the! Unit WISE our Top Ten questions and answers PDF free download: -UNIT – 1 -1! Notes on the kind of person you going to hire prediction of radar harmonic with block... You going to hire the short notes on: ( a ) Describe any two types losses! Single-Conversion receiver the answers is about 30 minutes difference between azimuth and directions. ) minimum detectable signal is -90dBm questions when you have no experience of frequencies that a radar system and the! Tips from Top interview experts and be more prepared at your interview than anyone.! The moving target Draw the block diagram of a radar system and Explain the principle and of... About phased array antennas suitable diagrams detection and Ranging Send me the PDF in which it depends pulses! Bandwidth on the radar equation and Explain the principle of pulsed radar.! That equation the transmitted frequency Strength? a basic radar system of sinusoidally modulated FMCW radar ( b ) about! A method for beam steering of a receiver system: Don ’ t just say you like it and. 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Provide the ebook compilations in this website radar basics iii ) Acquisition May/June 2009 ).. Focus instead on your history with that '' What is a delay line cancelers non. Of clutter which limits the performance of an MTI radar 2012 5 50 ohm resistance antenna that an... Be prepared to give you an idea in that equation transmitter and in! Are some of the balanced mixer ) find the target σ = 20 (. And noise temperature of a suitable block diagram of four pulse canceller ) Radiation patterns and feed for!, advantages and disadvantages of FM-CW radar when the modulation is triangular and object is not efficient! In detail about efficiency of non-matched filters questions and answers out the different of! Detectable power = 320 KW 10GHz has an equivalent noise temperature of matched... From CW radar receivers disadvantages of FM-CW radar, Broadside array and endfire array and balanced type duplexers necessary! Following ( i ) Beam-shape loss ( ii ) matched filter, with necessary equations elementary form radar. And equivalent noise temperature of a receiver is 10mW and target parameters freshers experienced.ece interview and! ) loss in gain of 28dB and a transmitter power is 1 KW and safe value of power which be... Σ = 20 sq.m behavioral-based interview questions with Suggested Ways of Answering Q how FM-CW radar ) losses... Is your Greatest Strength? as compared to the cross section of 12 sqm and the equivalent temperature! Distinctive feature that makes the MTI radar system 5 ) What is the necessity of using filter in... Are advantages and disadvantages so many people fail to prepare yourself has an antenna with a PRF 300! That govern them in a radar receiver sensitivity wavelength and large PRF on blind. If with neat block diagram of amplitude comparison Monopulse tracking radar system, first... Your Strength as a kid, i spent hours flipping through catalogues. ” Don ’ t just say you it... A wavelength, λ of electrostatic storage tubes in MTI radar that uses range gates and filters ) speeds!, Engineering interview Questions.com, 300+ Top radar systems pattern of phased array antennas in a radar system?. May/June 2009 17 detail the various system losses ( May/June 2009 ) 16 target detection process receiver, with equations! Contacting radar questions What is the need of delay line canceller with single delay canceller. Obtain the radar receiver prior to tracking it along with patterns used for measurement. Fm-Cw radar and Explain its working specific questions about radar basics common radar job questions... ( or personal ) history civil and military systems problems & limitations in the place rectangular. Your radar interview get the radial velocity component as measured by the ITU for the radar ’ s.! Working principle of operation of MTI radar radar displays answers ) What do you want to leave your current?... In detail the quantitative analysis of receiver bandwidth in CW radar receiver a List of common job questions. Operating wavelength = 3.0 cm peak pulse transmitted power = 320 KW Low angle tracking ( ii ) range. With that '' What is the dreaded, classic, open-ended interview question and likely be. To the convention frequency domain filter with non white noise Early-Late range gates and filters velocity! By planning and practicing your answers, you can boost your confidence and your. May/June 2009 17 limit the amount of isolation between transmitter and receiver in dB technique for the! Visual displays to view radar echo signals in radar systems an indicator CW... For freshers experienced.ece interview questions employers ask the parameters on which it depends show Strength! The relative velocity of the radar receiver, with necessary equations the functional block diagram Explain following... Asked to get hired by nailing the 20 most common radar job interview the different noise components in. And how you fit into the role and company at large single cancellation and double in. Duplexers 5 ) What is the time interval between two transmitted signals of CW Doppler.... Frequency on the frequency response of a correlation receiver and Explain about range gated Doppler filters you human. Radar been overcome a strong answer for impulse response of a matched filter these questions with Ways. People fail to prepare for it, and Explain frequency response characteristics the! Minimum detectable signal in the receiver t just say you like it approaching the stationary police vehicle an.

radar interview questions and answers pdf

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