AIRPORTS AUTHORITY OF INDIA 2010 EXAM QUESTION PAPER

1. In a row of children, Manoj is fifteenth from the left end of the row. If he is shifted towards the right end of the row by four places, he becomes eighth from the right end. How many children are there in the row?
(a) 27
(b) 26
(c) 28
(d) 24
2. How many such numerals are there in the number 2576489, which will remain at the same position when arranged in ascending order from left to right?
(a) One
(b) Two
(c) Three
(d) More than three
3. In a class of 40 children, Manmeet’s rank is eighth from the top. Vishal is five ranks below Manmeet. What is Vishal’s rank from the bottom?
(a) 27
(b) 29
(c) 28
(d) 26
4. Three of the following four are alike in a certain way. Find the one that does not belong to this group?
(a) Coriander
(b) Mustard
(c) Cumin
(d) Clove
5. ‘Seed’ is related to ‘Fruit’ in the same way as ‘Fruit’ is related to:
(a) Tree
(b) Branch
(c) Flower
(d) Petal
6. Three of the following four are alike in a certain way. Find the one that does not belong to this group?
(a) Van
(b) Truck
(c) Cargo
(d) Trolley
7. If it is possible to make a three digit number, which is perfect square of a two digit number from the second, the fourth and the eighth digits of 31792056 using each digit only once, what is the two digit number? If the perfect square cannot be formed, your answer is ‘N’ and if more than one such numbers can be formed , your answer is ‘X’
(a) 14
(b) 16
(c) N
(d) X
8. Pointing to a woman, Suresh said, she is the daughter of my grandfather’s only daughter. How is Suresh related to the woman?
(a) Brother
(b) Cousin
(c) Uncle
(d) Cannot be determined
9. ‘Visual’ is related to ‘Light’ in the same way as ‘Audio’ is related to:
(a) Voice
(b) Sound
(c) Drama
(d) Noise
10. ‘Jackal’ is related to ‘Carnivorous’ in the same way as ‘Goat’ is related to
(a) Omnivorous
(b) Carnivorous
(c) Herbivorous
(d) Multivorous
11. In a certain code ‘DESCRIBE’ is written as ‘FCJSDTFE’. How will ‘CONSIDER’ be written in that code?
(a) SPEJTOPD
(b) SEFJTOPD
(c) QFETJOPD
(d) QEFJTOPD
12. Four of the following five are alike in a certain way and so form a group. Which is the one thatdoes not belong to that group?
(a) Shampoo
(b) Talcum Powder
(c) Hair Oil
(d) Cosmetics
13. Four of the following five are alike in a certain way and so form a group. Which is the one thatdoes not belong to that group?
(a) 71
(b) 73
(c) 67
(d) 77
14. Four of the following five are alike in a certain way and so form a group. Which is the one thatdoes not belong to that group?
(a) Leaf
(b) Flower
(c) Branch
(d) Pollen
15. Four of the following five are alike in a certain way and so form a group. Which is the one thatdoes not belong to that group?
(a) Jasmine
(b) Rose
(c) Dahlia
(d) Lotus
16. ‘Radish’ is related to ‘Root’ in the same way as ‘Brinjal’ s related to
(a) Fruit
(b) Stem
(c) Flower
(d) Root
17. Four of the following five are alike in a certain way and so form a group. Which is the one thatdoes not belong to that group?
(a) Physiology
(b) cardiology
(c) Pathology
(d) Radiology
18. ‘Iron’ is related to ‘Metal’ in the same way as ‘Brass’ is related to
(a) Iron
(b) Alloy
(c) Copper
(d) Zinc
19. In a certain code RAID is written as %#ê$, RIPE is written as %ê@©. How is DEAR written in that code?
(a) @©#%
(b) $@#%
(c) @$#%
(d) $©#%
20. If blue is called red, red is called green, green is called black and black is called white, what is the colour of grass?
(a) red
(b) black
(c) white
(d) green
Directions (21-25): In each of the question below are given three statements followed by two conclusions numbered I and II. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts, and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Give the answer:
(a) if only conclusion I follows.
(b) if only conclusion II follows.
(c) if either conclusion I or II follows.
(d) if neither conclusion I nor II follows.
(e) if both conclusions I and II follow.
21. Statements:
a. Some pins are forks.
b. All forks are keys.
c. No key is lock.
Conclusions:
I. Some forks are pins.
II. No lock is a pin.
22. Statements:
a. Some shirts are trousers.
b. Some trousers are jackets.
c. All jackets are shawls.
Conclusions:
I. Some shawls are shirts.
II. Some jackets are shirts.
23. Statements:
a. Some leaves are plants.
b. Some plants are trees.
c. Some trees are fruits.
Conclusions:
I. Some fruits are trees.
II. Some trees are plants.
24. Statements:
a. Some rats are dogs.
b. Some dogs are horses.
c. Some horses are camels.
Conclusions:
I. Some horses are rats.
II. Some camels are horses.
25. Statements:
a. Some books are dictionaries.
b. Some dictionaries are files.
c. Some files are papers.
Conclusions:
I. Some papers are files.
II. Some files are books.

Answers:

1. b, 2. d, 3. c, 4. b, 5. c
6. c, 7. d, 8. b, 9. b, 10. c
11. a, 12. d, 13. d, 14. d, 15. e
16. a, 17. d, 18. b, 19. d, 20. b
21. c, 22. d, 23. e, 24. b, 25. a

AAI Junior Executive (Electronics)

Junior Executive (Electronics) Engineering Degree in Electronics / Tele Communication / Electrical with specialization in Electronics with Ist class (60%) OR M.Sc Degree or its equivalent with wireless communication,Electronics, Radio Physics or Radio Engg. as a special Subject. OR Equivalent with 1st Class (50% for SC/ST).

exam for both posts are of objective type and after written exam there are interview for both post but there is an additional voice test for the post of Junior Executive ATC.

exam paper of both examination is of two hours and exam paper consists two sections technical section and non technical section. however there are no fixed number of questions in exam some times total number of question may be 100 oir some time it may be 150. technical section contains 55% to 60% (questions from electronics / communication / microwave / digital electronics / control system / computer / information technology) non technical questions contains 40% to 40 % questions (from general knowledge, English language, reasoning and general mathematics).

some model questions from technical section is as given below -

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)

Airport Authority of India Placement Paper

  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?

AAI PAPER ON 9th NOVEMBER AT DELHI

Question paper consists of two sections:
Section I: non-technical
Section II: technical

SECTION I1.general knowledge
2. general english (fill in  the blanks, error  correction, one word is given and u have to check that the use of given word  is correct in the options  given or not, and some other questions)
3. reasoning( coded relations questions and other questions)
4. questions of intelligence

SECTION  IISubjects in technical section are:
1.Radar
2.Communication
3.Linear/digital device
4.Computer networking 
Some technical questions that I remember are:
1.Radar is used for?
2.COHO in MTI Radar uses which freq.?
3.CMRR of amplifier?
4.Binary to hexadecimal conversion?
5. Decimal to hexadecimal conversion?
6.Firewalls are used for?
7.Full form of FPGA?
8.Numerical based on Duty cycle and peak power?
9.IF transmitted power is increased by 16 than range is increased by  a) 16, b)8, c)4, d) none of these?
10.AGC is used in which of the stage a) receiver b) oscillator c) both a and b d) none of these?
11.Delayed AGC is used for which purpose?
12.Question based on the value of mirroring?
13.Question based on RAID.
14.Bridge is used for which of the OSI layer?
15.  5-6 questions are based on various  OSI layer and TCP/IP.
16.Which type of feedback is used in amplifier a) +ve b) -ve c) both a and b d) none of these?
17.question based on i/p impedance of transmission line  of a given wavelength.
18.What is three things for workstations of DNS server?
19.Which of the followinf is free-running?a)monostable multivibrator ,b)astable multivibrator, c)both a and b, d) none of these?
20.  2-3 questions based on voltage and current source.
21. One question of VCO.

AAI ATC – 2009 EXAM PAPER

Total 100 Qns. Around 50 technical . 

1. Which of the following schemes have the best error performance with the same energy per bit?
   1. 16QAM      b.  16PSK   c.  QPSK
2. Same Antenna is used for Tx and Rx. Radar range related to Antenna gain as
   1. Directly prop. To G
   2. Direc. Prop. To sq. root of G
   3. Inversely prop to G
3. Thermal Noise in conductor related to B
   1. B
   2. 1/B
   3. B2
   4. Square root of B
4. A control system with feed back gain 0.1 and forward gain 10. What is the sensitivity of the system w.r.t the feed back system.
5. The value of  ‘k’ for the system to be stable is. ( 6th degree Characteristic Eqn given)
6. Which of the following system is stable.
   1. As2 + Bs +C
   2. As2 - Bs +C
   3. As4 + B s3 +Cs+D
   4. -As2 - Bs -C
7. Linux OS based on which architecture
8. Comparison betweeb Macro and Subroutine
   1. Macro better that Sub Rtne with respect to storage time and execution time
   2. Vice versa
   3.  Macro better that Sub Rtne with respect to execution time only
   4. Vice versa
9. Which of the following is a privileged instruction?
   1. MOV A B
   2. INT 21
   3. ADD A B
   4. IN 08
10. Which of the following instruction is not converted to binary by an Assebly Language Program?
    1. TRAP
    2. Interrupt
    3. Privilige instruction
    4. Sorry don’t remember
11. In which type of machine can multiple tasks be done
    1. Virtual Machine
    2. Sorry don’t remember
12. Which of the following has the highest distortion?
    1. A
    2. B
    3. AB
    4. C
13. Which of the following distortions occur in Class B push pull amplifier?
    1. Harmonic
    2. Intermodulation
    3. Phase
    4. Sorry don’t remember
14. Ө(s)/T(s) of a rotational system (J,B,k regular notaions)
15. Schmitt Trigger with 3V & 1V UTP and LTP respectively. A sinusoidal input with 10V peak is fed as the input. The output swings between
16. Op-amp circuit given. Identify the circuit (Ans: Peak detector)
17. 6 bit binary ladder with 101001 as input ( 0= 0V , 1 = 10V). Output voltage is ------
18. Doppler Radar of 1125 MHz. Frequency of received echo is 125  MHz. The conclusion is
    1. Target also has a radar
    2. Target moving away
    3. Target approaching
19. Microprocessor cycles between
    1. Fetch and Execution operations.
    2. Fetch and Halt
20. Modulation index of an FM system with 2.5V, 500 Hz input and 5KHz deviation is
21. Routh’s Criterion gives
    1. Number of roots on the LHS of S plane
    2. Number of roots on the RHS of S plane
22. For the system to be stable, the roots of the characteristic Equation must lie
    1. Left side of the S plane
    2. Right side of s plane
23. Impulse response h(t) of a system is
    1. Inverse Laplace transform of Transfer Function
24. The output of a LTI system with Guassian process input is
    1. Gaussian
    2. Poisson
25. Spectral Density and Auto-Correlation are
    1. Laplace Transform pair
    2. Fourier Transform Pair.
26. A flex Klystron is a
    1. Microwave amp
    2. Microwave Oscillator
    3. Both amp and Oscillator
    4. High cavity tube
27. S Matrix related question.
28. Block diagram given

Oscillator(1MHz)  à  Divider (/ 10^6)  à Schmitt Trigger  à   Flip Flop  à.  Output is

1. Pulse Train of width 1 sec
2. Pulse Train of width 2 sec
3. Pulse Train of width 0.5 sec

AAI Jr.Executive (ATC) held on 20-12-2009.

TECHNICAL QUESTIONS asked for the Jr.Executive (ATC) held on 20-12-2009.
syllabus is:
subjects covering General Knowledge, Intelligence, Reasoning, General English, Electronics, Tele Communication, IT, Electrical, Physics, Mathematics, Computer Science etc.
duration is TWO hours.
here are only technical questions asked in the paper, hope helpful for u...
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 ?

AAI for the post JE( ELECTRONICS)

AAI for the post JE( ELECTRONICS). Test consists of total 100 questions.The paper consists of General Aptitude,Reasoning, GK,and techincal questions.
TECHNICAL:

1) The radiation pattern of yagiuda antenna? a)omnidirectional b)broadside c)end side
2)Function of synchro? a)transducer b) modulator c)demodulator d)encoder & decoder
3)Voltage feedback gives?
4)bcd value of 001100100001?
5)questions on micro controller pins?
6)simple questions on logic gates?
7)simple problems on rlc networks?
8)function of RAM?
9)hall effect is used to measure?
10)in RC phaseshift oscillator a condition to get oscillations is        hfe>= 4K+23+29/K...
11)directivity of half wave dipole is....1.64..
12)READY signal is used in MP becoz of slow devices connected.....
13)TRAP is non maskable interrupt.....
14)value of threshold voltage?
15)function of magnetron?
16) combinational ckt means a)with memory b)with out memory c)constucted with logic gates d) both b & c
17) 2 q's on nmos transistor.
18) 1 q on wheatstone bridge, 1 q on kcl, kvl
19)what is rom ? a) temporary storage b)permanent storage c).....d)...
20) 1 q on rat race junction.
21) 1 q on txn line short ckted condition.
22)1 q on sqrt(81max).
23) take a 4 digit binary noi.e A.and then what is A+Abar= a)1101 b)1011 c)1111 d)0000
24) 1 q on op amp prob , 1 q on slew rate
25) 1 q on which filter is used for extracting sine signalof 1mhz
26) if there are 8 rc filter sections what is the individual phase shift? a)180 b)45 c)22.5

GK
1) RIGHT TO EXPRESS COMES UNDER WHICH ARTICLE?
2) QUESTION ON COUNTRY CURRENCy?
3) QUESTION ON MULTI PURPOSE DAMS?
4)what are boxing rules called?
5)2 q's on spellings.
6)2 q's on correction of sentences.

REASONING
 one simple paragraph with 5 q's below.
 5 q's based on p*q means p is greater than q
                        p&q means pis less than q.
2 q's based on missing numbers, shifting the alphabets .

Airport authority of india (AAI) Syllabus for junior executives

Exam for both posts are of objective type and after written exam there are interview for both post but there is an additional voice test for the post of Junior Executive ATC.

exam paper of both examination is of two hours and exam paper consists two sections technical section and non technical section. however there are no fixed number of questions in exam some times total number of question may be 100 oir some time it may be 150. technical section contains 55% to 60% (questions from electronics / communication / microwave / digital electronics / control system / computer / information technology) non technical questions contains 40% to 40 % questions (from general knowledge, English language, reasoning and general mathematics).

some model questions from technical section:

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)