Company: Airports Authority of India (AAI)
Airports Authority of India question paper 2011 June (shad an college of engineering) Hyderabad
Chandrika appeared AAI Written Test Here she is sharing her experiences.
AAI PATTERN OF QUESTION PAPER
Written Test Pattern
Aptitude Analytical and Verbal Aptitude-20 Questions
Topics to refer-Simple Problems on sum,Ratio,Profit and Loss,Time and Distance
Verbal Ability-Synonyms,Antonyms,Reading Comprehension,analogies
G.K -7- 10 QUESTIONS
Electronics and communications(around 70-80 questions)
Almost all one word answers and a few problem solving type.
No.of subjects from each subject
20-23 Questions from Digital Electronics
15-20 Questions from Analog Devices
10-15 Questions from Digital Communication
10-12 Questions from Microprocessor(8085)
10-12 Questions from Signals and Systems
4-6 Questions from Opamps
5-8 Questions from Controls
2-5 Questions from Microwave Engineering
2 Questions iso-osi model
3 Questions rs 232 standard
TOPICS OF EACH SUBJECT FROM WHICH MOST OF QUESTIONS WERE ASKED
1) DIGITAL ELECTRONICS(GATE, MUX,F/F)
2) MICROPROCESSOR(8085,MICROCONTROLLER)( Q’S ON interrupt structure,rs 232 standard,ppi,8257,8259,8255,memory mapping schemes,icw,ocw)
3) ANALOG DEVICES (AMPLIFIERS(class a,b,c)OPAMPS(q’s on a/d,d/a converters,differentiator,integration,frequency formulas)
4) DIGITAL COMMUNICATIO(Q’S ON FDM AND TAD THEORY BASED)
5) MICROWAVE (SPACE WAVE PROPAGATION,ANTENNAS)
6) CONTROL SYSTEMS( SIMPLE PROBLEMS,QUESTIONS ON FEEDBACK,CONTROLLERS)
7) SIGNALS AND SYSTEMS(Q’S ON FOURIER TRANSFORMS,SINC FUNCTIONS,Q’S ON CONVOLUTIONS)
8) CONTROL SYSTEMS
9) Q’S CONTROLLERS,ROUTH STABILITY,FINAL VALUE THEORY,PHASE SHIFTINF OF 1/S^2,
10) Q’s on marginal stability of a system s^5+s^4+—–
11) Q’s on effect of + ve & -ve feedback on stability
12) Digital Electronics
13) Q’s mostly on gates,muxes,f/f’s
14) 2 k-map questions,9’s compliment 0f 19,find out hexadecimal code of…
15) Q’s on encoder,decoder asking no. of active lines
16) Flashing memory is??,q’s on octal to hexadecimal
17) Microprocessor
Questions on stack register,instruction pointer,rst 6.5,7,5
18) Microcontroller:
Questions what is interrupt,q’s on interrupt structute,memory mapping schemes,q’s on 8255,8257,8259,rs232 standards
19) Signals and systems:
Questions on fourier transform, sinc functions,q’s on convolution
20) Communications
21) Digital communication: q’s on tdm and fdm etc…
22) How pulse train generated using rectangular pulse
23) Questions on quantiser in pcm
24) why fm is less prone to noise,what is envelope detector,fn’s of limiter in detector of fm
25) cascading lpf and hpf results in…
26) a question : signal limited to 1000khz sampled at nyquist rate,quantized 128 ,calculate bit rate
27) q’s on optical fibre,total internal reflection
28) networks: 2 q,s aspaper more of theory based q on resonant freq formula
29) instrumentation: only 22-3 q’s from instrumenta : input impedance of cro, q’s on why fet in electronic voltmeter,q’ on pitot tube
30) analog,edc:
31) q’s on tunnel diode,zener diode,q’s on class a,b,c amplifiers efficiency,duty cycle
32) q’s on opamps:
33) o/p voltage calculation of opamp,cascading lpf and hpf
34) q’s on a/d,d/a converter,
35) differentiator,integrator using opamp,their freq formuila