Recent questions tagged isro-ece

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61
A $S$-$R$ flip flop with a clock input can be converted to a $’D’$ flip flop using :Two invertersthe flip flop outputs ($Q$&$\bar{Q}$) connected to its inputs ($S$&$R...
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62
100 Base T refers to(a) Fibre connectivity(b) BNC connectors(c) SONET(d) Twisted pair
3 votes
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63
Difference between a switch and Hub(a) Both are same(b) Switch avoids flooding(c) Hub avoids broadcast(d) None of the above
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64
machines tend to make use of internal resources of the processor, a rich set of registers and a pipelined organization.(a) CISC(b) Parallel processor(c) RISC(d) Array...
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65
An array processor is a machine(a) SIMD(b) MIMD(c) SISD(d) MISD
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66
Micro programming refers to(a) Emulation(b) Programming at micro level(c) The use of storage to implement the control unit(d) Array processing
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67
The performance gain that can be obtained by improving some portion of a computer can be calculated using(a) Moore's law(b) Djikstra's algorithm(c) Amdahl's law(d) Murphy...
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68
Which type of memory has fast erase and write times(a) EPROM(b) EEPROM(c) Flash memory(d) None of these
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69
Odd parity generator uses _____ logic(a) XNOR(b) XOR(c) Sequential(d) OR
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70
The mod number of a Johnson counter will be always equal to the number of flip flops used :sametwice$2N$ where $N$ is the number of flip flops.None of the these
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71
The fastest ADC among the following is(a) Successive approximation type(b) Dual slope type(c) Sigma - Delta ADC(d) Flash converter
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72
The advantage of write (copy) back data cache organization over write through organization is(a) Main memory consistency(b) Write allocate on write miss(c) Less memory ba...
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73
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74
A man with n keys wants to open a lock. He tries his keys at random.The expected number of attempts for his success is (keys are replaced after every attempt)a) n/2b) nc)...
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75
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76
A source produces 4 symbols with probabilities 1/2,1/4,1/8,1/8. For this source, a practical coding scheme has an average code- word length of 2 bits/symbol. The efficien...
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78
There is a function f(x), such that f(0) = 1 and f ' (0)= -1 and f(x) is positive for all values of x. Then,a) f"(x) < 0 for all xb) -1 < f'' (x) < 0 for all xc) -2 < f ...
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79
A straight line and a circle of radius a are given. A chord is drawn at random to this circle parallel to the given line. Expected length of the chord isa) 2ab) π ac) π...
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80
An 8-bit microcontroller has an external RAM with the memory map from 8000H to 9FFFH.The number of bytes this RAM can store isa) 8193b) 8192c) 8191d) 8000
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81
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82
The ethernet protocol usesa) CSMA/CAb) SCPCc) CSMA/CDd) Slotted ALOHA
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83
A 5 bit DAC has a current output. For a digital input of 10100, an output current of 10 mA is produced. What will be the output current for a digital input of 11101?a) 14...
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84
Number of real values of $(a + ib) ^{1/n} + (a-ib) ^{1/n}$ isa) 0b) 1c) nd) None of the above
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85
f(x) = [$ tan ^2$ x] ( [ ] stands for greatest integer function)a) f(x) continuous at x = 0b) limit f(x) does not exist as x tend to 0c) f '(0) = 1d) f(x) not derivable ...
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86
If α and β are the roots of the equation $x^2 + x + 1= 0$. Then$α ^{3n} +β ^{3n}$ isa) 1b) 2c) 0d) 3
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87
Which of the following technology results in least power dissipation ?a) CMOSb) ECLc) TTLd) NMOS
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89
Which of the following types of devices is not field programmable?a) FPGAb) ASICc) CPLDd) PLD
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90
$lim_{x ->0}$ (x log sin x) isa) 0b) 1/2c) 1d) 2