ONGC  Placement Paper   Whole Testpaper   ahmedabad-19 Jun 2010

ONGC  Placement Paper   Whole Testpaper   ahmedabad-19 Jun 2010


  • Posted by  FreshersWorld 
    7 Jan, 2012

    Hi All,
     
    ONGC Paper was Easy Technical but difficult GK.
    Paper had : 120 Qs : 40 GK (tough) + 80 Technical (easy) with NO NEGATIVE MARKING and AMPLE AMOUNT OF TIME (3 hours)
    However test centre was full of aspirants so you have to be very accurate with the answers.
     
     
    ONGC 2010 Questions (Based on Memory) (After : options are given based on memory )

     1.       Modulation index increased from 0 to 1 . Transmitted power now ?

     2.       Deemphasis is used because

     3.       In FM, maximum deviation at what point of modulating signal

     4.       Voltage gain of emitter follower : <=1 , =1 , >=1 , cannot say

     5.       CRO uses which method of focussing

     6.       Slew Rate unit

     7.       Positive Feedback is same as  : degeneration , regeneration

     8.       Integrator is : LPF , HPF

     9.       Lowest Efficiency in Power amplifier : A , B , AB , C

    10.   When PLL is used as frequency multiplier, O/P is taken from

    11.   Ideal OP Amp ? Input Impedance = ? Output Impedance = ? , Voltage Gain = ?

    12.   IC 555 uses how many Flip Flop combination

    13.   PF of inductive circuit : 0 , 1

    14.   Unit of magnetic flux

    15.   2 heater 1000W, 250V connected in series in 250V , 50Hz ac mains. Power drawn =?

    16.   100 batteries , 9V each in parallel combination, Voltage across combination ?

    17.   HTTP = stateful/stateless protocol ?

    18.   IP address starts with binary address 110 it is class : A , B , C , D

    19.   Layer responsible for delivery of packet from node to node

    20.   ADSL behaviour : upload and download which is more or less ?

    21.    Damping factor = 1 : underdamped , critically damped , overdamped

    22.   Difference between controlled variable and desired value of process control system

    23.   Why differentiator is not part of control system : Increases input noise , increases error , reduces gain, reduces damping

    24.   Definitiuon of Transfer Fn

    25.   Identical Telephone no. under different exchanges are distinguished by : Modulation indices , language digit , access digit , area code

    26.   Which is analog : DCM , DM , DPCM , PWM

    27.   Carrier synchronization not needed in : BPSK , DPSK , QPSK , QAM

    28.   Common ckt in Freq Hopp Spread Spectrum and Direct Seq Spread Spectrum : correlator , Freq Synthesizer , Sweep Generator , Pseudo Random Noise Code Generator

    29.   Bit Rate _ Baud Rate ? : > , < , = 

    30.   Minimum Bwto transmit 56 kbps with no noise ?

    31.   Asynchronous  data transfer : start stop as mark and space

    32.   f = 10 kHz sampled at Nyquist rate time int B/W 2 success samples ?

    33.   Find correct parity as odd parity : Rightmost bit as parity bit : 1111111 1 , 0011010 1 , 1100110 1 , 0000000 0

    34.    Dynamic memory cell store data in : register , capacitor

    35.   +0.5 V in TTL logic is : high , low , undefined , high impedance

    36.   Convert BCD 0001 0111 to binary

    37.   Resolution of 6 bit DAC

    38.   5th clock of johnson counter gives o/p = 0111 , 6th clock gives o/p = ?

    39.   Lissajous figure are eant for measuring : R , V , I , f

    40.   Unit of Voltage Sensitivity : Ohm/V , V/Ohm , Ohm V , V

    41.   Volts / div on CRO changes  : gain in vertical / sec , : gain in horizontal / sec , freq of timebase , freq of trigger

    42.   Measurement of Q is based on principle of : Resonance , Mutual Inductance , Piezoelectric Effect , Peltier Effect

    43.   Laser light is brighter because : Pure , Coherent , White , Monochromatic

    44.   Contents of Instruction Poointer Specify

    45.   Waveguide has cut of freq = 17KHz . Which freq will not pass by waveguide : 15 Khz, 22 Khz

    46.   1 nepar = _ db

    47.   Transmission length < (lambda/4) in short ckt behaves as

    48.   Holding ckt in SCR

    49.   Centre tapped transformer in single phase cycloconeuses : 2 , 4 , 6 , 8 SCR

    50.   Maximum height of satellite : Apogee , Perigee

    51.   Satellite stays in orbit because : Satellite wt. + speed , gravitational pull + inertia , centripetal force +speed , satellite wt +pull of sun and moon

    52.   FET depends on controlling current through SC change : 1 polarity , 2 polarity , 4 , 8 polarity

    53.   Beta : Current gain in CC Mode , Current gain in CE Mode, Voltage gain in CC Mode, , Voltage gain in CE Mode

    54.   Flash Analog To Digital of each comparator is connected to : decoder , priority encoder , MUX , Demux

    55.   To serially shift a nibble of data in shift register there must be clock pulses : 2 , 4 , 8 , 1 clock pulse for each data

    56.   Mod 10 counter uses Flip flop : 10 , 4 , 2 , 8

    57.   Which family IC have better noise immunity : TTL , ECL , CMOS , DTL

    58.   Address required for 4096 bit memory arranged in 512 X 8 memory

    59.   When 8 bits serial in / out shift reg. I sused for 20 (mew)sec  time delay. Find clock frequency

    60.   Conversion time of 6 bit successive approximation type ADC : 32 , 64 , 6 , 1/6 usec

    61.   Wein Bridge is used to measure : f , L , R , C

    62.   Fibre optic cable best for high speed data transfer : single mode step index  , multiple mode step index  , single mode graded index  , multiple mode graded index 

    63.   Microcontroller includes : CPU + Memory + I/O + Clock Generator , CPU + Memory + I/O , CPU + I/O

    64.   Fetch cycle  is : 1st part of instruction cycle ,

    65.   Flag to manipulate movement of string : parity , zero , direction , inter

    66.   Microwave signal propagates by way of : direct , surface , sky , standing wave

    67.   Makes equivalent current generator in circuit analysis : Norton , Thevenin  , Maxm. Power Transfer , Superposition

    68.   When HPF and  LPF section are connected  in // it as Band reject filter with : fl > fh , fl = fh , fl < fh

    69.   When peak transmitted power of a radar is increased by a factor of 16 , maxm range increases by a factor : 2 , 4, 8, 16

    70.   Tunnel diode : is  a point contact diode with high reverse resistance, is highly doped pn junction diode

    71.   Arrow head of transistor symbol indicates : (drift / diffusion of  electron/hole)

    72.   TRAPATT

    73.   Currently nearly equal : Ic Ie , Ib Ie , Ic Ib , Ib Ic Ie

    74.   Aspect ratio : raster width + height , Horizontal scanning frequency + Vertical Scanning frequency.  

     
    Subjective : Suggest a circuit and then prove : V0 = /(V1) + /(V2) + /(V3)    where /=integral, and prove it   
    Soln : Use summer in integrator
    Solve a Karnaugh map

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