# Software Companies Placement Papers With Answers- -Free Download

##

**
**

1. An ice block submerged in the water, if the ice melts level of water
(increase,decrease,remains same,none)

2. Simply supported beam with w point load at the middle, max. bending
moment?(wl/4)

3. Simply supported beam with UDL ,max.deflection (wl4/384EI)

4. Cantilevel beam point load at tip,max.bending momemt comes at (end)

5. When bearing life L10 represents (bearings 10%survive,bearings 10%
fails, none )

6. For welding high carbon steels which type of flame is used
(oxidizing,carburizing,neutral,none)

7. Arrange the following cutting tools in decreasing order of machining
hardness...Ceramics

8. When P1 and P2 are the loads acting on bearings with life L1 and L2
then L1/L2=? L1/L2={P2/P1}10/3

9. Product simplification does not mean?? Product characterization

10. Which of the following process has the most scope in manufacturing?
CAD/CAM, CAM, CIM, All the above.

11. Concurrent engineering means? (Manufacturing, designing, both,none)

12. Which manufacturing process yields higher output and increases
worker productivity- (process layout,line+process,functional layout)

13. 18-4-1 represents-, Tungsten-Cr-Vn 14 For which material is
negative allowance provided-(Graphite,steel,bronze,cast iron)

15. What is the recrystallisation temperature of tin-
(60,300,1000,none)

16. What is the purpose of borax in soldering-

17. Top gates are provided in which type of casting-(Shallow
casting,simple,complex,none)

18. Which statement is true regarding simple gear trains-(i/p and o/p
shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving)

19. What is the purpose of normalizing- (Refining of grain structure)

20. As the grain size is decreased-(Hardness increases,corrosion
resistance decreases,both)

21. Isothermal gas is filled in a vessel at a pressure P and
temperature T then considering the compressible forces as the height
increases pressure ??(linearly increases linearly decreases
exponentially increase )

22. A bottle is filled with water and air and is tied to a string and
is rotated in horizontal direction. Then in which direction will air
bubble travel? (bottom,neck,uniformly spread)

23. A empty bottle(in vaccum) filled with a gas at temp T and press P
when the pressure of bottle reaches P temperature of the gas is _?
(T,T/K,TK)

24. Bearing somerfield number _ with load on bearing?
(increases,decreases,no change)

25. Critical radius for a sphere is-(2k/h)

26. Critical radius exist for_ (spherical,cylindrical,both,slab)

27. Convectional resistance/internal resistance is called (biot number)

28. Nusselt no. is? (hl/k)

29. EOQ=?

30. Which statement is true regarding critical path method? (i only one
critical path exists for a network, more than one with same duration,)

** **

**
**

1. Expression for d(n): u(n)-u(n-1)/ u(n-1)-u(n+1)/ u(n)+u(n+1)/...

2. Numerical on a photodiode: to calculate the responsivity/sensitivity
when a specified no of incident photons cause a specified no of
electron generation.

3. For a radioactive sample which decays to 12.5% of its initial value
in x days, the half life is given by..

4. Connect two 1o resistors in series, then connect two 1h inductors
across one of the resistors such that the ckt looks like a 1o resistor
in series with a ?-section of a resistor and two inductors. With the
series resistance on the I/p side, calc the transfer function of this
ckt

5. Ac signal conditioning is used for inductive and
capacitive/resistive/piezoelectric transducers/all of the above.

6. Lower useful input limit of a transducer is determined by..

7. Air-cored inductors are used for low frequency/high frequency/equal
frequency operations.

8. Given 4 pole-zero plots identify which one corresponds to the
driving point impedance of a series resonant ckt.

9. Given four unit-circle plots identify the one corresponding to a
bandpass filter.

10. The sequence (2,3,4,3) is circularly even/circularly odd/circularly
zero/both circularly even and odd.

11. Z-transform of 3n u(n).

12. Match the following with their characteristics: led/lcd/nixie
tube/optical fibre.

13. A 4 khz signal is sampled at thrice the nyquist rate and sent
through a channel with error =1%. Calc the bandwidth of the channel.

14. Given an op-amp ckt obtain an expression for o/p voltage.

15. No. Of encirclements made about the origin of the nyquist plot of
the open loop tf:1/[(s-1)(s+2)(s+3)].

16. Given a two port network in the form of a t find o/p admittance in
terms of y-parameters.

17. For a repeater in a pcm cable identify the correct sequence of
actions amongst threshold/equalization/etc.

18. O/p of a delta modulator when a ramp input is fed to it.

19. Steady state error with ramp I/p for a type-0 system.

20. Creeping occurs in energy meters bcoz...

21. Ultrasonic method of flow measurement cannot be used in liquids
with air bubbles/has less attenuation in air compared to
liquid-identify the false statement (if any) among these.

22. Major cause of losses in a fibre optic cable: dispersion/total
internal refraction/presence of core and cladding/..

23. Which layer in the osi model is concerned with printer buffering,
etc: network/session/transport/..

24. Given some function f(j?) calc its inverse ctft.

25. Relation between laplace and z-transform: s=z/ s=ln z/ s=( ln z/t)
/..

26. Maxm and minm probability error among ask,psk,fsk,dpsk etc

27. Which of the following is a non linear modulation scheme:
pam/qam/pcm/..

28. Match the following functions: e-t , e-t + et, sin(pt) with causal
and stable system, causal and unstable system, etc.

29. Given a ckt with a 50 o resistor in series between two voltage
sources of 10 v and 5 v magnitude calc power delivered by 5 v source.

30. Laplace transform of e-3tu(t)+e2tu(-t).

31. Which photodetector has output affected by own intrinsic noise:
pn/apd/pin/all.

32. Inverse laplace transform of 1/s2[d/ds(e-3s/s)]

33. When I mode is added to proportional control system stability
increases/ decreases/ steady state performance deteriorates/damping
increases.

34. Reset control is another name for
integral/derivative/proportional/... Control.

35. Time response of system having transfer function 625/(s2+25) will
be of the form..

36. Given some transfer function calc the peak response time.

37. The nyquist sampling rate of the function [sin(at)/t]2 will be..

38. The feedback topology that results in increased I/p and o/p
impedance is current series/voltage series/current shunt voltage shunt.

39. Numerical on cardiac output calculation given heart rate and volume
per beat.

40. In an ecg instrumentation amplifier the differential gain is
provided by 1st stage/2nd stage/mismatched resistors/output stage.

41. Repeat ques 40 above for the classic 3-op amp instrum amplifier.

42. Emg signals are of the order of mv/v/µv/..

43. Computer assisted tomography is used for..

44. Numerical on electrostatic instrument, to calculate deflection
given spring constant, torque etc.

45. To prevent loading of a ckt I/p impedance of a cro should bee
high/low/inductive/capacitive.

46. Addition of a zero to a 2nd order underdamped system results in
increase/decrease of rise time and increase/decrease of peak overshoot.

47. For pi ctrl we obtain improved bandwidth/improved steady state
performance/ worsened steady state performance/..

48. Snr of normal am system is comparable/3 db lower/3 db higher/6 db
lower over dsb-sc and ssb system.

49. Which is an effective measure of the noise related performance of
an amplifier: snr/noise ratio/thermal noise/shot noise.

50. Given baseband signal freq and carrier freq calc which of the freq
given will not be present for conventional am.

51. Distinction between fm and pm at high frequencies.

52. Which of these has the least propagation delay rtl/ecl/i2l/cmos.

53 Switching speed of cmos is affected/unaffected by changes in supply
voltage.

54. Which of these provides a measure of heart rate p/qrs
complex/t/none of these.

55. Given a ckt of a logarithmic amplifier you had to identify what ckt
was it.

56. Jfet can operate in depletion/enhancement/both/none of the above
modes.

57. When a bjt operates in saturation the junctions are fwd
biased/reverse biased/..

58. Bibo stability criterion implies that poles are within/outside/on
the unit circle.

59. For faithful amplification of low amplitude signals the
cut-off/active/saturation regions of a transistor is used.

60. Lissajous pattern of a signal rotates 36 times per minute. If the
oscillator frequency is 560 khz then the unknown freq is..

61. % Resolution of a 10 bit adc.

62. To obtain 10 mv resolution on 5 v range how many bit dac is to be
used..

63. Why is lcd preferred to led.

64. How will 0.6973 be displayed on 10 v range of a 4 ˝ digit
multimeter.

65. Which of the following cannot be used for an automatic feedback
temp ctrl system thermocouple/thermometer/thermistor/ic sensor.

66. Y(n)=x(-n+3) is an example of a linear/non linear and shift
variant/invariant system.

67. The falling body method is used to determine viscosity/humidity/...

68. Which of these methods of viscosity measurement gives greatest
accuracy falling body method/rotating cylinder method/both/..

69. Some question on gas chromatography

70.A device having a rotor with 3 y-connected coils and a stator is
likely to be a synchro/rvdt/control transformer/..

71. In a twisted ring counter the initial count is 1000. After the 4th
clock pulse its state will be...

72. A 240 khz signal is given into a 3 bit binary ripple counter. The
lowest o/p freq obtainable is...

73. For parity bit checking which of the following gates can be used
xor/nand/or/xnor.

74. Why is a bjt called so..

75. Identify the expression for gauge factor of a strain gauge among
the given options.

76. In a semiconductor strain gauge as tensile strain is applied what
changes take place in the n and p areas..

77. How does a radioactive level gauging system work..

78. A capacitive transducer measuring level works on the principle of
change in distance between plates/change in dielectric strength/..

79. For maximum power transfer in an ac circuit the condition to be
satisfied is zl+zs=0/xl+xs=0/none of these/...where l and s refers to
load and source resp.

80. Find the transfer function from a block diagram.

81. Synchronous ctrs are preferred to asynchronous ctrs bcoz they are
faster/glitches at the output can be avoided/both/none of these.

82. The lissajous figure formed on an oscilloscope looks like the
english figure of 8. If the vertical channel input is 1 khz the
horizontal input freq is...

83. Ie=ic for a transistor in saturation/cutoff/active/both saturation
and active regions.

84. Reproducibility of measurements is called
accuracy/precision/linearity/none of these.

85. Which of these is not strictly a static characteristic
accuracy/precision/tolerance/linearity.

86. The shunt coil in a q meter has resistance of the order of
mo/o/ko/..

87. For measuring inductance of high q coils the bridge used is
maxwell-wien/schering/..

88. Which of these measures inductance in terms of capacitance maxwell
and hay/maxwell and schering/hay and schering/..

89. In a flip-flop with preset and clear inputs both are applied
simultaneously/clear is cleared when preset is applied/preset is
cleared when clear is applied/...

90. What happens when the ret instruction is encountered by 8085

91. A 1024*8 memory chip needs how many address lines..

92. What happens when the push instruction is encountered by 8051.

93. In fm relation between no of sidebands w.r.t. Modulating freq

94. Numerical on dpsk.

95. A multiplexer accepts input data and provides one output all the
time/one output at a time/many outputs at a time/many outputs all the
time.

96. Pulse modulation is essentially a process of multiplexing/...

97. Wave shape is altered by clipper/clamper/voltage doubler/amplifier.

98. 4 Signals of frequencies 100,100,200 and 400 hz are sampled at
nyquist rate and sent through tdm on a channel.the bandwidth of the
channel is..

99. Superposition can be applied to a ckt with initial
conditions/non-linear ckt/..

100. Kelvin's double bridge is used for the measurement of..

101. Which of these is not an active transducer thermocouple/solar
cell/rtd/none of these.

102. Oscillator using positive feedback has gain of 0/8/undefined
value/..

103. Wien bridge oscillator should initially have closed loop gain
>3/<3/=3/..

104. Some question on gain margin and phase shift of a system.

105. Fourier series expansion of even function has sine terms
only/cosine terms only/no odd harmonics/..

106. Full wave rectifier gives clean dc o/p/dc o/p with small
ripple/positive half and inverted negative half of I/p as o/p.

107. Which of these values of ? Gives damped oscillations: 0/1/1.6/0.6

108. For a transformer of ratio 1:a and excited by a source v with
impedances z1 and z2 on the primary and secondary side value of a for
maxm power transfer should be..

109. Fourier transform of cos(?0t) is..

110. At t=0 the step response of a 1st order system is...

111. 555 Can be used as a monostable/astable/freq dividing ckt/all of
these.

112. In a pt when the secondary is open ckted with the primary excited
what will happen.

113. If a system is marginally stable then the nature of oscillations
will be..

114. Linear encoders mostly use straight binary/bcd/gray code.

115. For an accelerometer working in displacement mode the ratio of
forcing freq to natural freq should be....

**
**

1. What is turbocharging?

2. What is carburation?

3. What is efficiency of boiler?

4. Tell me about yourself and family background?

5. Why do you think you are best suited for this post?

## 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.