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1st September 2014, 02:09 PM
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Airport Authority of India ATC exam previous year question papers
Will you please share with me the Airport Authority of India ATC exam previous year question papers?
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#2
1st September 2014, 04:08 PM
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Re: Airport Authority of India ATC exam previous year question papers
As you want to get the Airport Authority of India ATC exam previous year question papers so here it is for you: 1. In a communication system, noise is most likely to affect the signal (a) at the destination (b) In the channel (c) in the information source (d) at the transmitter 2. Indicate the false statement. Fourier analysis shows that the saw tooth wave consist of (a) fundamental and subharmonic sine waves (b) a fundamental sine wave and an infinite number of harmonics (c) fundamental and harmonic sine waves whose amplitude decreases with the harmonic number (d) sinusoidal voltages, some of which are small enough to ignore in practice 3. One of the following types of noise becomes a great importance at high frequencies. Is the (a) random noise (b) shot noise (c) impulse noise (d) transit-time noise 4.Indicate the false statement. The square of the thermal noise voltage generated by a resistor is proportional to (a) its temperature (b) Its resistance (c) Boltzmann’s Constant (d) the bandwidth over which it is measured 5.If the plate supply voltage for a plate modulated class C amplifier is V, the maximum plate-cathode voltage could be almost as high as (a)4v (b)3v (c)2v (d)1v 6. Which one will be stable if characteristics equation is (a) AS^2+BS+C (b) AS^2-BS-C (c) AS^4+BS^2+CS+D (d) -AS^2+BS-C 7.When microwave follows curvature of the earth, this I know as (a) fading (b) Ducting (c) troposphere scatter (d) ionosphere reflection 8. Broadband long distance communications are originally made possible by the advent of (a) telegraph cables (b) repeater amplifiers (c) HF radio (d) Geostationary satellites 9. Switching systems (a) Improve the efficiency of data transfer (b) are not used in data system (c) require additional lines (d) are limited to small data networks 10. Basic group B (a) occupies the frequency range from 60 to 108 k hz (b) consist of erect channels only (c) is formed at the group translating equipment (d) consist of five super group 11. In differential amplifiers, the common emitter current is made constant (a) To make Ad (differential gain) very small (b) To make Ac (common mode gain) very small (c) To make the amplifier symmetrical (d) To keep CMRR constant 12. Given BCD number 1001 0011, its decimal equivalent is (a) 147 (b) 143 (c) 93 (d) 39 13. An amplifier has voltage gain of 50. this gain in db will be (a) 17 db (b) 31 db (c) 34 db (d) 68 db 14. In a E plane Tee, the output of the two rams are (a) 180 degree out of phase (b) In the same phase (c) 90 degree out of phase (d) none of these 15. waveguide are generally made of (a) Aluminium (b) Bronze (c) Both (a) and (b) (d) none of these Answers 1.(b) 2.(a) 3.(d) 4.(a) 5.(a) 6.(a) 7.(b) 8.(b) 9.(a) 10.(a) 11.(b) 12.(c) 13.(c) 14.(a) 15.(c) The AAI written Question paper dwells of two sections first: – Non Technical, second Technical, The first section has 4 types of questions 1. GK (General Knowledge questions) 2. General EnglishThe general english test questions are fill in the blanks type and errors 3. Reasoning 4. Other (puzzles, etc.) Section 2: The subjects for the section 2 are Microwave & Radar, Communication, Linear – Digital Devices, Networking (CN) Important sample technical questions for AAI Placement Test: Electronics (engineering), Communication, Electrical, B.Tech What is a radar used for? Which frequency do we use in MTI radar (COHO)? What do you mean by CMRR of an amplifier? Conversion related questions (binary to hexadecimal, decimal to hex) Numericals (peak power) What do you mean by FPGA? In which OSI layer do we use the bridge? Various other questions based on OSI Layer (Computer networking questions), TCP/IP protocols (multiple choice type) Why do we use a delayed AGC? What is VCO? Why do we use firewalls? What is mirroring, RAID, etc. Relation between transmitted power & range If we increase power by 16, range increases by? Where do we use an AGC in a circuit? TWO hours. 1. question on Ruth’s criterion. 2. charecteristic equation for stable state. 3. common collector amplifier (current, voltage relations…). 4. FET transconductance, Gm is directly proportional to… 5. at 3dB frfequency line, gain reduces to… 6. maximum distortion occurs in which amplifier? 7. class B pushpull amplifier suffers from… 8. Barkhausen’s criterion for sustained oscillations.. 9. low frequency response of RC coupled amplifier ( characteristics) 10. ideal operational trans conductance amplifier ( i/p & o/p impedance relations) 11. radiation resistance of folded dipole is ….ohms. 12. IC timer 555, low on pin4(reset), what happens? 13. decimal to binary conversion… 14. question on full adder circuit( no of i/p o/p digits) 15. ckt involving: oscillator -> divider -> schmitt trigger -> flip flop -> o/p= ? ( -> represents followed by symbol ) 16. a ckt: op amp ->diode and capacitor -> o/p; name the ckt? 17. pblm on binary adder ( 6 bit) 18. feedback factor is 0.1, forward gain of system is 10, sensitivity w.r.t f/b element? 19. linux is implemented as? 20. feedback control system characteristics? 21. phased locked loop is used in ? 22. a pblm on random variables… 23. freq response char of ideal comm chnl.. 24. best error performance for same avg energy per bit (options 16QAM, 16ASK, 16PSK, QPSK) 25. Tx band width od SSB? 26. nyquist interval.. 27. r/n b/n spectral density &auto correlation fpor a periodic function. 28. thermal noise power in a conductor is proportional to… 29. numerical on modulation index… 30. question on radar range.. 31. question on doppler radar… 32. microwave signal follows earth curvature, phenomenon called as… 33. flex klystron functions as… 34. microwave junction matched at all points is called…’ 35. numerical on schmitt trigger ckt operation on a sine wave. 36. question on assembly language ( up ) . 37. assembly language ( up ). 38. assembly language (up)/(uc). 39. operating system architecture. 40. o.s architecture.. 41. protocol to receive mails from server.. 42. question on ethernet involving distances( 2500 mts ). 43. pc to hub distance in 10base T ethernet. 44. ip-sec is an internet security mechanism for ? Contact Details: Airport Authority of India Rajiv Gandhi Bhawan, Safdarjung Airport, Sri Aurobindo Marg, Safdarjung Airport Area, Satya Sadan, New Delhi, Delhi 110003 011 2463 2950 India Map Location: [MAP]https://www.google.co.in/maps?q=Airport+Authority+of+India,+Sri+Aurobindo+M arg,+Satya+Sadan,+New+Delhi,+Delhi&hl=en&ll=28.586 18,77.211056&spn=0.010589,0.015171&sll=28.540572,7 7.196229&sspn=0.010594,0.015171&oq=Airport+Authori ty+of+India+&t=m&z=16&iwloc=A[/MAP] |