# Software Companies Placement Papers With Answers- -Free Download

##

**
1. The current I in the given network.
**

a) 1A b) 3A c) 5A d) 7A

2. For the Delta- Wye transformation in given figure, the value of the
resistance R is.

a) 1/3 ohms b) 2/3 ohms c) 3/2 ohms d) 3 ohms

3. In the given network, the Thevenin’s equivalent as seen by the load
resistance Rl is

a) V=10 V, R= 2ohms b) V=10V, R=3 ohms c) V=15V, R= 2ohms d) V=15V, R=3
ohms

4. The current I in a series R-L circuit with R=10 ohms and L=20mH is
given by i=2sin500t A. If v is the voltage across the R-L combination
then i

a) lags v by 45 degree b) is in-phase with v c) leads v by 45 d) lags v
by 90

5. In the given network, the mesh current I and the input impedance
seen by the 50 V source, respectively, are

a) 125/13 A and 11/8 ohms b) 150/13 A and 13/8 ohms c) 150/13 A and
11/8 ohms d) 125/13 A and 13/8 ohms

6. A voltage source having a source impedance Z = R + jX can deliver
maximum Average power to a load impedance Z, when

a) Z = R + jX b) Z = R c) Z = jX d) Z = R –jX

7. In the given circuit, the switch S is closed at t=0. Assuming that
there is no initial Charge in the capacitor, the current i(t) for
t>0 is

a) V/R e^ (-2t/RC) b) V/R e^ (-t/RC) c) V/2R e^ (-2t/RC) d) V/2R e^
(-t/RC)

8. For the circuit in given figure, if e(t) is a ramp signal, the
steady state value of the Output voltage v(t) is

a) 0 b) LC c) R/L d) RC

9. For the series RLC circuit in given figure, if w=1000 rad/sec, then
the current I (in Amperes) is

a) 2 ?-15 b) 2 ?15 c) v2?-15 d) v2?15

10. The Y-parameter matrix (mA/V) of the two-port given network is

a) [2 -1 -1 2] b) [2 1 -1 2] c) [1 -2 -1 2] d) [2 1 1 2]

11. The maximum number of trees of the given graph is

a) 16 b) 25 c) 100 d) 125

12. Given figure shows a graph and one of its trees. Corresponding to
the tree, the group of branches that CAN NOT constitute a fundamental
cut set is

a) 1,2,3 b) 1,4,6,8,3 c) 5,6,8,3 d) 4,6,7,3

13. The Y-parameter matrix of a network is given by Y=[1 1 -1 1] A/V.
The Z11 parameter of the same network is

a) ˝ ohms b) 1/v2 ohms c) 1 ohms d) 2 ohms

14. For the given circuit, the switch was kept closed for a long time
before opening it at t=0. The voltage v(0+) is

a) -10 V b) -1 V c) 0V d) 10 V

15. The input impedance of a series RLC circuit operating at frequency
W= v2w, w being the resonant frequency, is

a) R-j(wL/v2) ohms b) R+j(wL/v2) ohms c) R-jv2wL ohms d) R-jv2wL ohms

16. The threshold voltage V is negative for

a) an n-channel enhancement MOSFET b) an n-channel depletion MOSFET c)
an p-channel depletion MOSFET d) an p-channel JFET

17. At a given temperature, a semiconductor with intrinsic carrier
concentration ni= 10 ^ 16 / m^3 is doped with a donor dopant of
concentration Nd = 10 ^ 26 /m^3.

Temperature remaining the same, the hole concentration in the doped
semiconductor is

a) 10 ^ 26 /m^3 b) 10 ^ 16 /m^3 c) 10 ^ 14 /m^3 d) 10 ^ 6 /m^3}

18. At room temperature, the diffusion and drift constants for holes in
a P-type semiconductor were measured to be Dp = 10 cm^2/s and µp = 1200
cm^2/V-s, respectively. If the diffusion constant of electrons in an
N-type semiconductor at the same temperature is Dn = 20 cm^2/s, the
drift constant for electrons in it is

a) µn = 2400 cm^2/V-s b) µn = 1200 cm^2/V-s c) µn = 1000 cm^2/V-s d) µn
= 600 cm^2/V-s

19. A common LED is made up of

a) intrinsic semiconductor b) direct semiconductor c) degenerate
semiconductor d) indirect semiconductor

20. When operating as a voltage regulator, the breakdown in a Zener
diode occurs due to the

a) tunneling effect b) avalanche breakdown c) impact ionization d)
excess heating of the junction.

21. If the common base DC current gain of a BJT is 0.98, its common
emitter DC current gain is

a) 51 b) 49 c) 1 d) 0.02

22. Negative resistance characteristics is exhibited by a

a) Zener diode b) Schottky diode c) photo diode d) Tunnel diode

23. Let En and Ep, respectively, represent the effective Fermi levels
for electrons and holes during current conduction in a semiconductor.
For lasing to occur in a P-N junction of band-gap energy 1.2 eV, (En -
Ep) should be

a) greater than 1.2eV b) less than 1.2eV c) equal to 1.1eV d) equal to
0.7eV

24. In a P-well fabrication process, the substrate is

a) N-type semiconductor and is used to build P-channel MOSFET

b) P-type semiconductor and is used to build P-channel MOSFET

c) N-type semiconductor and is used to build N-channel MOSFET

d) P-type semiconductor and is used to build N-channel MOSFET

25. In a MOS capacitor with n-type silicon substrate, the Fermi
potential ˘ = -0.41 V and the flat-band voltage Vfb = 0V. The value of
the threshold voltage Vt is

a) -0.82 V b) -0.41 V c) 0.41 V d) 0.82

Refer given figure for question 26 and 27. Assume D1 and D2 to be ideal
diodes.

26. Which one of the following statements is true?

a) Both D1 and D2 are ON.

b) Both D1 and D2 are OFF.

c) D1 is ON and D2 is OFF.

d) D2 is ON and D1 is OFF.

27. Values of Vo and I, respectively, are

a) 2V and 1.1 mA b) 0V and 0 mA c) -2V and 0.7 mA d) 4V and 1.3 mA

28. In a BJT CASCODE pair, a

a) common emitter follows a common base

b) common base follows a common collector

c) common collector follows a common base

d) common base follows a common emitter

29. Inside a 741 op-amp, the last functional block is a

a) differential amplifier b) level shifter c) class-A power amplifier
d) class-AB power amplifier

30. For the MOSFET in the given circuit, the threshold voltage Vt =
0.5V, the process parameter KP = 150 µA/V^2 and W/L = 10. The values of
Vd and Id, respectively, are

a) Vd = 4.5 V and Id = 1 mA

b) Vd = 4.5 V and Id = 0.5 mA

c) Vd = 4.8 V and Id = 0.4 mA

d) Vd = 6 V and Id = 0 mA

31. A negative feedback is applied to an amplifier with the feedback
voltage proportional to the output current. This feedback increases the

a) input impedance of the amplifier b) output impedance of the
amplifier c) distortion in the amplifier d) gain of the amplifier

32. The early effect in a BJT is modeled by the small signal parameter

a) r0 b) r ? c) gm d) ß

33. For a given filter order, which one of the following type of
filters has the least amount of ripple both in pass-band and stop-band?

a) Chebyshev type I b) Bessel c) Chebyshev type II d) Elliptic

34. For a practical feedback circuit to have sustained oscillation, the
most appropriate value of the loop gain T is

a) 1 b) -1 c) -1.02 d) 1.02

35. Assume the op-amps in given figure to be ideal. If the input signal
vi is a sinusoid of 2V peak-to-peak and with zero DC component, the
output signal vo is a

a) sine wave b) square wave c) pulse train d) triangular wave

36. In a common source amplifier, the mid-band voltage gain is 40 dB
and the upper cutoff frequency is 150kHz. Assuming single pole
approximation for the amplifier the unity gain frequency fT is

a) 6 MHz b) 15 MHz c) 150 MHz d) 1.5 GHz

37. An op-amp is ideal except for finite gain and CMRR. Given the open
loop differential gain Ad=2000, CMRR = 1000, the input to the
noninverting terminal is 5.002 V and the input to the inverting
terminal is 4.999 V, the output voltage of the op-amp is

a) 14 V b) 24 V c) -6 V c) -8 V

38. The op-amp in the circuit in given figure has a non-zero DC offset.
The steady state value of the output voltage Vo is

a) –RC dvs(t)/ dt b) – (1/RC)|vs(t)dt c) –V d) +V

39. For the circuit in given figure, if the value of the capacitor C is
doubled, the duty-cycle of the output waveform Vo

a) increases by a factor of 2 b) increases by a factor of 1.44 c)
remains constant d) decreases by a factor of 1.44

40. Assume the op-amp in the given circuit to be ideal. The value of
the output voltage Vo is

a) 3.2 Vi b) 4 Vi c) 9 Vi d) 10 Vi

41. The complement of the Boolean expression F = (X + YŻ + Z)(XŻ +
ZŻ)(X + Y) is

a) XYZ+XZŻ+YŻZ b) XŻYZŻ+XZ+XŻYŻ c) XŻYZŻ+XZ+YZ d) XYZ+XŻYŻ

42. The Boolean function F(A,B,C,D) = ?(0,6,8,13,14) with don’t care
conditions d(A,B,C,D) = ?(2,4,10) can be simplified to

a) F = BŻDŻ+CDŻ+ABCŻ b) F = BŻDŻ+CDŻ+ABCŻD c) F = ABŻDŻ+CDŻ+ABCŻ d) F =
BŻDŻ+CDŻ+ABCD

43. The Boolean function F = AŻDŻ+BŻD can be realized by one of the
following figures

44. For the multiplexer in given figure, the Boolean expression for the
output Y is

a) AŻBŻ+BŻCŻ+AC b) ABŻ+BŻCŻ+ACŻ c) ABŻ+BŻC+AC d) AŻBŻ+BŻC+AŻC

45. Which one of the following is TRUE?

a) Both latch and flip-flop are edge triggered.

b) A latch is level triggered and a flip-flop is edge triggered.

c) A latch is edge triggered and a flip-flop is level triggered.

d) Both latch and flip-flop are level triggered.

46. In a schottky TTL gate, the Schottky diode

e) increases the propagation delay

f) increases the power consumption

g) prevents saturation of the output transistor

h) keeps the transistor in cutoff region

47. For which one of the following ultraviolet light is used to erase
the stored contents

a) PROM b) EPROM c) EEPROM d) PLA

48. Which one of the following is NOT a synchronous counter

a) Johnson counter b) Ring counter c) Ripple counter d) Up-down counter

49. In 8085 microprocessor, the accumulator is a

a) 4 bit register b) 8 bit register c) 16 bit register d) 32 bit
register

50. In the register indirect addressing mode of 8085 microprocessor,
data is stored

a) at the address contained in the register pair

b) in the register pair

c) in the accumulator

d) in a fixed location of the memory

51. The output w[n] of the system shown in given figure is

a) x[n] b) x[n-1] c) x[n] – x[n-1] d) 0.5(x[n-1] + x[n])

52. Which one of the following is a periodic signal

a) x(t) = 2 e^j(t+(p/4)) b) x[n] = u[n] + u[-n] c) x[n] =
?{?[n-4k]-?[n-1-4k]} where k = -8to 8 d) x(t) = e^ (-1+j)t

53. If the input-output relation of a system is y(t) = ?x(t) dt where t
= -8 to 2t

a) linear, time-invariant and unstable

b) linear, non-causal and unstable

c) linear, causal and time invariant

d) non-causal, time invariant and unstable

54. Which one of the can be the magnitude of the transfer function |
H(jw) | of a causal system

55. Consider the function H(jw) = H1(w) + jH2(w), where H1(w) is an odd
function and H2(w) is an even function. The inverse Fourier transform
of H(jw) is

a) a real and odd function

b) a complex function

c) a purely imaginary function

d) a purely imaginary and odd function

56. The laplace transform of given signal is

a) –A((1-e^cs)/s) b) A((1-e^cs)/s) c) A((1-e^-cs)/s) d) –A((1-e^-cs)/s)

57. If X(z) is the z-transform of x[n] = (1/2)^ |n|, the ROC of X(z) is

a) |z| > 2 b) |z| < 2 c) 0.5<|z|<2 d) the entire z-plane

58. In a linear phase system, tg the group delay and tp the phase delay
are

a) constant and equal to each other b) tg is a constant and tp is
proportional to w c) a constant and tg is proportional to w d) tg is
proportional to w and tp is proportional to w

59. A signal m(t), band-limited to a maximum frequency of 20 kHz is
sampled at a frequency fs kHz to generate s(t). An ideal low pass
filter having cut-off frequency 37 kHz is used to reconstruct m(t) from
s(t). The maximum value of fs required to reconstruct m(t) without
distortion is

a) 20 kHz b) 40kHz c) 57 kHz d) 77 kHz

60. If the signal x(t) shown in given figure is fed to an LTI system
having impulse response h(t) as shown in given figure, the value of the
DC component present in the output y(t) is

a) 1 b) 2 c) 3 d) 4

61. The characteristic equation of an LTI system is given as s^3 + Ks^2
+ 5s + 10. When the system is marginally stable, the value of K and the
sustained oscillation frequency w, respectively, are

a) 2 and 5 b) 0.5 and v5 c) 0.5 and 5 d) 2 and v5

62. The time required for the response of a linear time-variant system
to reach half the final value for the first time is

a) delay time b) peak time c) rise time d) decay time

63. The signal flow graph of the given network is

64. Let c(t) be the unit step response of a system with transfer
function K(s+a)/(s+K). If c(0+)=2 and c(8)=10, then the values of a and
K, respectively, are

a) 2 and 10 b) -2 and 10 c) 10 and 2 d) 2 and -10

65. The loop transfer function of an LTI system is G(s)H(s)=
K(s+1)(s+5) / s(s+2)(s+3). For K>0, the point on the real axis that
DOES NOT belong to the root locus of the system is

a) -0.5 b) -2.5 c) -3.5 d) -5.5

66. The state space equation of the circuit shown in given figure for
x1=v0, x2=I is

67. The open loop gain of a unity feedback system is G(s)=wn^2 /
s(s+2wn). The unit step response c(t) of the system is

68. If A = [2 0 0 2], then e^At is given by

a) [e^2t 0 0 e^2t] b) [e^-2t 0 0 e^-2t] c) [e^t/2 0 0 e^t/2] d) [e^-t/2
0 0 e^-t/2]

69. The angles of the asymptotes of the root loci of the equation s^3 +
5s^2 + (K+2)s + K = 0, for 0<=K<8, are

a) 0 and 270 b) 0 and 180 c) 90 and 270 d) 90 and 180

70. The bode plot corresponding to a proportional derivative controller
is the one shown in given figure

71. In frequency modulation, the instantaneous

a) amplitude of the carrier signal is varied with the instantaneous
amplitude of the message signal

b) amplitude of the carrier signal is varied with the instantaneous
frequency of the message signal

c) frequency of the carrier signal is varied with the instantaneous
amplitude of the message signal

d) frequency of the carrier signal is varied with the instantaneous
frequency of the message signal

72. If X is a zero mean Gaussian random variable, then P{X<=0} is

a) 0 b) 0.25 c) 0.5 d) 1

73. If a single-tone amplitude modulated signal at a modulation depth
of 100% transmits a total power of 15W, the power in the carrier
component is

a) 5W b) 10W c) 12W d) 15W

74. In a superheterodyne receiver, rejection of the image signal can be
achieved by using a

a) higher local oscillatorn frequency b) crystal oscillator c) narrow
band IF filter d) narrow band filter at RF stage

75. The number of bbits per sample of a PCM system depends upon the

a) sampler type b) quantizer type c) number of levels of the quantizer
d) sampling rate

76. Which one of the following is used for the detection of AM-DSB-SC
signal

a) Ratio detector b) Foster-Seeley discriminator c) Product demodulator
d) Balanced-slpoe detector

77. Which one of the following signal pairs can represent a BPSK signal

a) A cos2pfct, A sinpfct

b) A cos2pfct, - A sinpfct

c) - A cos2pfct, A sinpfct

d) A sin2pfct, A cospfct

78. Which one of the following can be used for the detection of the
noncoherent BPSK signal

a) matched filter b) phase-locked loop c) envelope detector

d) product demodulator

79. Bits of duration Tb are to be transmitted using a BPSK modulation
with a carrier of frequency Fc Hz. The power spectral density of the
transmitted signal has the first null at the normalized frequency

a) |F – Fc|Tb = 0 b) |F – Fc|Tb = 1 c) |F – Fc|Tb = 2 d) |F – Fc|Tb = 4

80. The probability of bit error of a BPSK modulation scheme, with
transmitted signal energy per bit Eb, in an additive white Gaussian
noise channel having one-sided power spectral density N0, is

a) (1/2) erfc(Eb/2N0) b) (1/2) erfcv(Eb/2N0) c) (1/2) erfc(Eb/N0) d)
(1/2) erfcv (Eb/N0)

81. For a given transmitted pulse p(t), 0<=t<=T, the impulse
response of a filter matched to the received signal is

a) –p(t-T), 0<=t<=T b) –p(T-t), 0<=t<=T c) p(t-T),
0<=t<=T d) p(T-t), 0<=t<=T

82. The multiple access communication scheme in which each user is
allocated the full available channel spectrum for a specified duration
of time is known as

a) CDMA b) FDMA c) TDMA d) MC-CDMA

83. GSM system uses TDMA with

a) 32 users per channel b) 16 users per channel c) 8 users per channel
d) 4 users per channel

84. If Rx(t) is the auto-correlation function of a zero-mean wide-sense
stationary random process X, then which one of the following is NOT
true?

a) Rx(t) = Rx(-t) b) Rx(t) = -Rx(-t) c) sx^2 = Rx(0) d) |Rx(t)|
<=Rx(0)

85. If E denotes the expectation operator, then E[X-EX]^3 of a random
variable X is

a) EX^3 – E^3X b) EX^3 + 2E^3X – 3EX Ex^2 c) 3EX^3 – E^3X d) 2EX^3 +
E^3X – 3EX EX^2

86. A discrete memoryless source produces symbols m1,m2,m3 and m4 with
probabilities 1/2, 1/4 , 1/8 and 1/8, respectively. The entropy of the
source is

a) Ľ b) 1 c) 7/4 d) 2

87. A channel has a signal-to-noise ratio of 63 and bandwidth of 1200
Hz. The maximum data rate that can be sent through the channel with
arbitrary low probability of error is

a) 600 bps b) 1200 bps c) 4800 bps d) 7200 bps

88. For the vectors A = X ax + Y ay and B = Z az, del . (A X B) is

a) 0 b) 1 c) XZ d) YZ

89. Which one of the following relations represents Strokes’ theorem
(symbols have their usual meaning)?

a) ?s del X A.ds = 0 b) ?L A.dl = ?s del X A.ds c) ?s A X dS = -?v (del
X A)dv d) ?v del.Adv = ?s A.ds

90. Which one of the following relations is not correct (symbols have
their usual meaning)?

a) del X E = - ?B/?t b) del X H = J + ?E/?t c) del.D = ?v d) del.B = 0

91. The electric field component of a uniform plane wave propagating in
a lossless magnetic dielectric medium is given by E(t,z)=ax 5cos(10^9 t
– 20/3 z)V/m. If ?0 represents the intrinsic impedance of the free
space, the corresponding magnetic field component is given by

a) H(t,z)= ay 5/2 ?0 cos(10^9t – 20/3 z)A/m

b) H(t,z)= ay 10/ ?0 cos(10^9t – 20/3 z)A/m

c) H(t,z)= az 5/2 ?0 cos(10^9t – 20/3 z)A/m

d) H(t,z)= az 10/ ?0 cos(10^9t – 20/3 z)A/m

92. The skin depth of a non-magnetic conducting material at 100 MHz is
0.15 mm. The distance which a plane wave of frequency 10 GHz travels in
this material before its amplitude reduces by a factor of e^-1 is

a) 0.0015 mm b) 0.015 mm c) 0.15 mm d) 1.5 mm

93. A lossless transmission line has a characteristic impedance of 100
ohms and an inductance per unit length of 1 µH/m. If the line is
operated at 1 GHz, the propagation constant ß is

a) 2p rad/m b) 20p/3 rad/m c) 20p rad/m d) 2p *10^5 rad/m

94. When a load resistance Rl is connected to a lossless transmission
line of characteristic impedance 75 ohms, it results in a VSWR of 2.
The load resistance is

a) 100 ohms b) 75v2 ohms c) 120 ohms d) 150 ohms

95. A two-port network characterized by the S-parameter matrix,

[S] = [0.3 L0 0.9 L90

0.9 L90 0.2 L0]

Is

a) both reciprocal and lossless b) reciprocal, but not lossless c)
lossless, but not reciprocal d) neither reciprocal nor lossless

96. A lossless air filled rectangular waveguide has internal dimensions
of a cm * b cm. If a=2b and the cutoff frequency of the TE02 mode is 12
GHz, the cutoff frequency of the dominant mode is

a) 1 GHz b) 3 GHz c) 6 GHz d) 9 GHz

97. A Hertzian dipole antenna is placed at the origin of a coordinate
system and it is oriented along z-axis. In which one of the following
planes the radiation pattern of the antenna has a circular shape?

a) x=0 b) y=0 c) z=0 d) ř=45

98. Which one of the following statements is not true?

a) Antenna losses are taken into account in calculating its power gain

b) For an antenna which does not dissipate any power, the directive
gain and the power gain are equal

c) Directivity of an antenna is the maximum value of its directive gain

d) The directive gain of a Hertzian dipole is same in all direction

99. The directivity of a half dipole antenna is

a) 1.0 b) 1.5 c) 1.64 d) 2

100. Which one of the following is not true for a step index optical
fibre?

a) It can support multiple modes

b) HE11 mode is its lowest order mode

c) The refractive index of the cladding is higher than that of the core

d) At a given wavelength, single mode operation is possible by proper
choice of core diameter, core and cladding refractive indices.

SECTION – B

101. Sarnath is situated in the state of

a) MP b) Bihar c) Punjab d) UP

102. Green house effect is due to the increase of atmospheric

a) CO2 level b) SO2 level c) CO level d) N2 level

103. In the month of July, it is winter in

a) New York b) Beijing c) Sydney d) London

104. The chairman of the Planning commission of India is

a) The prime minister b) The vice-president c) The union finance
minister d) The union commerce minister

105. The satellite launch vehicle that placed a number of satellites
ito orbit in May 2008 is

a) PSLV-C7 b) PSLV-C8 c) PSLV-C9 d) PSLV-C10

106.DRDO was formed in

a) 1947 b) 1950 c) 1954 d) 1958

107. SAMYUKTA is developed for the use of

a) Navy b) Army c) Air force d) RAC

108. DARL 202 is a variety of

a) pea b) garlic c) capsicum d) tomato

109. TRISHUL is

a) a surface to surface battlefield missile

b) a quick reaction surface to air missile

c) an intermediate range ballistic missile

d) a supersonic cruise missile

110. HUMSA is a

a) sonar b) tank c) mine d) night vision device

111. The value of 1+2i / 3-4i + 2-I / 5i , where i^2 is -1, is

a) -5/2 b) 5/2 c) 2/5 d) -2/5

112. The particular solution of the differential equation d^2y/dx^2 + 2
dy/dx + 5y = 0 satisfying the conditions y(0)=0 and y’(0)=1 is

a) y=1/2 e^-x cos2x b) y=1/2 e^-x sin4x c) y=1/2 e^-x sin2x d) y=1/2
e^-x cos4x

113. For the vectors A=3i-2j+k and B=2i-k, the value of (A*B).A is

a) 0 b) 1 c) 2 d) 3

114. The orthogonal trajectory of the family of curves x^2-y^2 = a
(where a is a constant) and passing through the point (1,1) is

a) y=-1/x b) y=1/x c) y=-x d) y=x

115. The value of the line integral ? y^2 dx + 2xydy over the curve
x=accost, y=asint is

a) 0 b) 1 c) 2 d) 4

116. The n-th partial sum of the infinite series 1/1*2 + 1/2*3 +
1/3*4+……1/n*(n+1)……..

a) 1/n+1 b) n+2/n+1 c) n/n+1 d) n-1/n+1

117. The complex-valued function f(z)=e^z is analytic for

a) no z b) all z c) real z only d) imaginary z only

118. The inverse of the matrix [ cos A sin A

-sin A cos A] is

a) [ -cos A Sin A b) [cos A sin A} c) [cos A -sin A d) [cos A -sin A

sin A cos A] sin A -cos A] -sin A cos A] sin A cos A]

119. Consider the function f(x) defined as

F(x) = 3x-1, x<0

0, x=0

2x+5, x>0

In the following table, List I shows 4 expressions for limits of f(x)
and List II indicates the values of the limits

List I List II

P.Lim x->2 f(x) 1. -1

Q.Lim x->0+ f(x) 2. 9

R.Lim x->0- f(x) 3. -10

S.Lim x->-3 f(x) 4. 5

The correct matches are

a) P-2,Q-4,R-1,S-3 B) P-2,Q-4,R-3,S-1 C) P-4,Q-2,R-1,S-3 D)
P-4,Q-2,R-3,S-1

120. Two events A and B with probability 0.5 and 0.7, respectively,
have joint probability of 0.4. The probability that neither A nor B
happens is

a) 0.2 b) 0.4 c) 0.6 d) 0.8

121. Consider the differential equation

X^2 d^2/dx^2 + x dy/dx + (x^2 - 4)y = 0. The statement which is not
true for it is

a) It is a linear second order ordinary differential equation

b) It can not be reduced to a differential equation with constant
coefficients

c) X=0 is a regular singular point

d) It is a non-homogeneous second order ordinary differential equation

122. The sum of two numbers is 16 and the sum of their squares is a
minimum. The two numbers are

a) 10,6 b) 9,7 c) 8,8 d) 5,11

123. The value of the definite integral 0?(p/2)^(1/3) x^2 sin(x^3)dx is

a) -1/3 b) 0 c) 1 d) 1/3

124. A circle C2 is concentric with the circle C1 : x^2 + y^2 -4x +6y
-12 =0 and has a radius twice that of C1. The equation of the circle C2
is

a) x^2 + y^2 -4x +6y -13 =0 b) x^2 + y^2 -4x +6y -87 =0 c) x^2 + y^2
-4x +6y -100 =0 d) x^2 + y^2 -4x +6y -88 =0

125. Consider the quadratic equation x^2 + px + q =0. If p and q are
roots of the equation, the values of p and q are

a) p=0, q=0 only b) p=1, q=-2 only c) p=0, q=0 and p=1, q=-2 d) p=0,
q=0 and p=-2, q=1

126. Consider the list of words: etiquette, accommodate, forty,
exaggerate, continous, independent, receipt. The number of misspelt
words are

a) 1 b) 2 c) 3 d) 4

127. Consider the following sentences

1. A few friends he has are all very rich.

2. Do not insult the weak.

3. The later of the two persons was more interesting.

4. All the informations were correct.

Out of these sentences, the grammatically correct sentence is

a) 1 b) 2 c) 3 d) 4

128. The appropriate auxiliary verb to fill in the blank of the
sentence “Gandhi knew that he __ soon be jailed.”is

a) would b) will c) shall d) may

129. The number of missing punctuation marks in the sentence “Rajesh
along with Amit went to the market.”is

a) 0 b) 1 c) 2 d) 3

130. The meaning of the word PLAGIARISM is

a) theft of public money b) theft of ideas c) belief in one god d)
belief in many gods

131. The antonym of the word TRANSIENT is

a) certain b) close c) permanent d) fast

132. ACROPHOBIA is the abnormal fear of

a) open spaces b) height c) fire d) water

133. The appropriate pair of prepositions to fill in the blank in the
sentence “He was angry __ me, because my remarks were aimed __ him.”is

a) at,to b) with, at c) with, to d) at, for

134. The appropriate word(s) to fill up the blank in the sentence “ I
remember __ voices in the middle of the night.”is (are)

a) hear b) to hear c) hearing d) heard

135. The passive voice form of the sentence “I have known him for a
long time.”is

a) He is known to me for a long time.

b) He is known by me for a long time.

c) He has been known to me for a long time.

d) He has been known by me for a long time.

136. If kennel is to a dog, then __ is to a hen.

a) nest b) coop c) hole d) stable

137. If NATION is to 5236765, then NOTION is to

a) 573675 b) 563765 c) 576375 d) 557365

138. The next two numbers of the series 3,5,11,21 are

a) 34 and 52 b) 34 and 53 c) 35 and 52 d) 35 and 53

139. A, B and C are three places in India with longitudes 80E, 85 E and
90 E respectively. Which one of the following statements about the
local times of the places is true?

a) Local time of C is ahead of that of B.

b) Local time of B is ahead of that of C.

c) Local time of A is ahead of that of C.

d) A, B and C all have the same local time.

140. In this question, notations +, / and * are used as follows

A + B means A is the husband of B.

A / B means A is the sister of B.

A * B means A is the son of B.

With these relations, the relationship denoted by P / Q * R is

a) P is son of R

b) P is daughter of R

c) P is uncle of R

d) P is father of R

141. If DELHI is written as EDHIL, then PARIS is written as

a) APRIS b) SARIP c) SAPIR d) APISR

142. The number of prime numbers between 10 and 50 is

a) 10 b) 11 c) 12 d) 13

143. The odd one in the list : LAN, TCP/IP, HACKER and KILLER is

a) LAN b) TCP/IP c) KILLER d) HACKER

144. SAW is to carpenter as SCALPEL is to

a) surgeon b) mason c) plumber d) tailor

**
**

1. If 100ns is Memory Access Time & 125 microsec is 1frame period.
The no. of line that can be supported in a Time Divison Switch is

a)125 Lines

b)625 Lines

c)525 Lines

d)465 Lines

2. The no. of edjes in disjoint Hamilton circuit in a complex graph
with 17 edges is

a) 8

b) 9

c) 136

d) 17^2

3. 15 persons in a club sit every day ina dinner table such that every
member has different neighbour. This arrangement will last for how many
days.

Assume a system has 16MB cache mean Disk Access Time & cache Access
time is 76.5 ns & 1.5 overall mean Access time us 465ms for each
tripling the memory the miss rate is halved. The memory required to
bring down the mean Access time to 24ns is

a) 16 MB

b) 24 MB

c) 32 MB

d) 48 MB

4.Average transfer speed of a i/p serial line is minimum 25,000 Bytes
& maximum 60000 Bytes. Polling Strategy adopted takes
4microsec(whether there is any i/p byte or not). It is assured that
byte that retrived from controller before next byte arrives are lost.
Then the maximum safe polling interveal is

a) 12

b) 12.33

c) 12.67

d) 32

5. A harddisk has a rotation speed of 4500RPM. then the latency time is

a) .4

b) .6

c) .7

d) .9

6.Suppose all elements above the principal diagonal od n x n matix A
are zero. If non zero elements of the lower triangular Matrix is stored
in an array B with A[1][1] stored at B[1]. The addressing formula to
the nonzero element in A[i][j]=?

a) A[i][j]

b) i(j-1)/2 +i

c) j(i-1)/2 +i

d) i(i-1)/2 +j

7.The minumum number of comparisons requied to find the second smallest
element in a 1000 element array is

a) 1008

b) 1010

c) 1999

d) 2000

8.The internal path length of a Bonary Tree with 10nodes is 25. The
external path length is

a) 25

b) 35

c) 40

d) 45

9.Average No. of Comparisons required to sort 3 elements is

a) 2

b) 2.33

c) 2.67

d) 3

10.In a switch the mean arrival rate of packets is 800 Packets/sec and
the the mean service rate is 925 Packets/sec

a) .008 Sec

b) .08 sec

c) .8 sec

d) 1.1 sec

11. What is Interface Control Information?

12. The minumum no. of Multiplications needed to compute x^768 is

a) 9

b) 10

c) 425

d) 767

13. Find values for a,b,c,d

c 1 1 1

0 a 1 b

_______

1 0 d 0

(967)basex = 321base9

14. The area of red planet where the Mars Rover Landed? In Which Day
world Telecom Day Celebrated? Laser is used for what?

a) Treatment of Cancer

b) Treatment of Eyes

c) Treatment of Heart

d) Treatment of Kidney

15.Which country is not a Member of SAARC

a) Bangladesh

b) Myanmar

c) Maldives

d) Nepal

The New Biotechnology Software intorduced by TCS is?

16.The New Biotechnology Software intorduced by TCS is? What is Wi Fi?

17.Which is the fastest Cruise Missile?

** **

## Source: Contents are provided by Technicalsymposium Google Group Members.

Disclaimer: All the above contents are provided by technicalsymposium.com Google Group members.

Further, this content is not intended to be used for commercial purpose. Technicalsymposium.com is not liable/responsible for any copyright issues.