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ONGC Domain (electronics) question :
1.k-map equation related proved that .
2. Design of a analog circuit which have output as V=∫V1dt+ ∫V2dt+∫V3dt
Domain questions :
1.aspect ratio in TV is width to height.
2. Adsl download rate is high compare to upload.
3.110 is class C in IP address.
4. if sun near to earth it is called ?
5.what is indicted the arrow head in transistor ?
6. if 100 battery of 9 volt is connect in parallel the what is output voltage ?
7.question related to satellite orbit
10. Carrier SYNCHRONIZATION not needed in QPSK,PSK,FSK?
11.CRO AND SCR
13.laser is produce white light due to ?
14.wein bridge is use to measure of frequency.
15.radar system is using multiple of 16 then what is the multiplier
a)2 b)4 c)8 d)16
16.x= ab +bc is having how many how's in the truth table?
17.1 nepar=_ db
18. resolution of 6 bit is ?
19. Find correct parity as odd parity : Rightmost bit as parity bit : 1111111 1 , 0011010 1 , 1100110 1 , 0000000 0.
22.voltmeter sensitivity is measure in ?
23.microcontroller is having?
26.BCD to binary converter
27.baud rate and bit rate which is grater ?
28.ideal op amp is having _i/p , _o/p , _bandwidth ?
29.IC 555 timer is having how many flip flop and comparator
31. Modulation index increased from 0 to 1 . Transmitted power now ?
32. De-emphasis is used because
33. Voltage gain of emitter follower : <=1 , =1 , >=1 , cannot say
34. CRO uses which method of focusing
35. Positive Feedback is same as : degeneration , regeneration
36. Lowest Efficiency in Power AMPLIFIER IS CLASS A , B , AB , C ?
37. 2 heater 1000W, 250V connected in series in 250V , 50HZ AC mains. Power drawn =?
38. HTTP = stateful/stateless protocol ?
39.which Layer responsible for delivery of packet from node to node ?
40. Difference between controlled variable and desired value of process control system
41. Why differentiator is not part of control system : Increases input noise , increases error , reduces gain, reduces damping
42 Which is analog : DCM , DM , DPCM , PWM
43. Identical Telephone no. under different exchanges are distinguished by : Modulation indices , language digit , access digit , area code
44. Common ckt in Freq Hopp Spread Spectrum and Direct Seq Spread Spectrum : correlator , Freq Synthesizer , Sweep Generator , Pseudo Random Noise Code Generator
45. Minimum Bwto transmit 56 kbps with no noise ?
46. Minimum Bwto transmit 56 kbps with no noise ?
47. f = 10 kHz sampled at Nyquist rate time int B/W 2 success samples ?
48. Find correct parity as odd parity : Rightmost bit as parity bit : 1111111 1 , 0011010 1 , 1100110 1 , 0000000 0
49. Dynamic memory cell store data in : register , capacitor
50. +0.5 V in TTL logic is : high , low , undefined , high impedance
51. 5th clock of johnson counter gives o/p = 0111 , 6th clock gives o/p = ?
52. Volts / div on CRO changes : gain in vertical / sec , : gain in horizontal / sec , freq of timebase , freq of trigger
53. . Measurement of Q is based on principle of : Resonance , Mutual Inductance , Piezoelectric Effect , Peltier Effect
54. Laser light is brighter because : Pure , Coherent , White , Monochromatic
55 Centre tapped transformer in single phase cycloconeuses : 2 , 4 , 6 , 8 SCR
56. . Maximum height of satellite : Apogee , Perigee
57. Satellite stays in orbit because : Satellite wt. + speed , gravitational pull + inertia , centripetal force +speed , satellite wt +pull of sun and moon
58. FET depends on controlling current through SC change : 1 polarity , 2 polarity , 4 , 8 polarity
59. Beta : Current gain in CC Mode , Current gain in CE Mode, Voltage gain in CC Mode, , Voltage gain in CE Mode
60. Flash Analog To Digital of each comparator is connected to : decoder , priority encoder , MUX , Demux
61. To serially shift a nibble of data in shift register there must be clock pulses : 2 , 4 , 8 , 1 clock pulse for each data
62. Mod 10 counter uses Flip flop : 10 , 4 , 2 , 8
63. Which family IC have better noise immunity : TTL , ECL , CMOS , DTL
64. Address required for 4096 bit memory arranged in 512 X 8 memory
65. When 8 bits serial in / out shift reg. I sused for 20 (mew)sec time delay. Find clock frequency
66. Conversion time of 6 bit successive approximation type ADC : 32 , 64 , 6 , 1/6 usec
67. 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
68. Microcontroller includes : CPU + Memory + I/O + Clock Generator , CPU + Memory + I/O , CPU + I/O
69. Flag to manipulate movement of string : parity , zero , direction , inter
70. . Microwave signal propagates by way of : direct , surface , sky , standing wave
71. Makes equivalent current generator in circuit analysis : Norton , Thevenin , Maxm. Power Transfer , Superposition
72. When HPF and LPF section are connected in // it as Band reject filter with : fl > fh , fl = fh , fl < fh
73. When peak transmitted power of a radar is increased by a factor of 16 , maxm range increases by a factor : 2 , 4, 8, 16