PART
1. Forfirst order differential equation,: +ky where k is a constant and the solution is
A. y=ekx
B. y= e-kx
C. y= ek/x
D. y eX/k
2. An example ofintensive thermodYnamic property is
A. Entropy
B. Pressure
C. Volume
D. Free energy
3. In a homogeneous system with components and phases under constant temperature ·and pressure, the total number ofindependent thermodYnalIlic variables is
A. c-n
B. c+n
C. c-n+2
D. c-n-2
4. Which ofthe following statements is true?
A. Both screw and edge dislocation contain extra plane above or below the slip plane
B. Edge dislocation contain extra plane above or below the slip plane
C. Screw dislocation contain extra plane above or below the slip plane
D. None ofthe above
2

5. The dimensional formula for specific heat capacity (all symbols have standard meaning) is
A. M>L2T-2e-1
B. MLT2e-1
c.
MlLT2e-1

D.
MlL-2T-2e-1


6. For a thermodynamic system to be stable under constant temperature and pressure,
A. Its Gibb's free energy should be maximum
B. Its Gibb's free energy should be minimum
c.
Its enthalpy should be minimum

D.
Its entropy should be minimum


7. the number of close pac,ked planes in face centred cubic structure are
A. 2
B. 4
C. 6
D. 8
8. Thelimit ofresolutionofanopticalmicroscopeisequalto
A. The ,wavelength ofthe radiation
B. Magnifying power ofthe eyepiece
C. Aperture size
D. Polarization ofthe radiation
9. Which one ofthe following elements can have positive oxidation state?
A. Cs
B. Br
C. 0
D.· None ofthe above

3
10. The work function ofNa is 2.3eV. What is the maximum wavelength oflight that will cause photoelectrons to be emitted from Na?
A. 488nm
B. 540nm
C. 668nm
780nm
11. Paramagnetic alpha iron changes to gamma iron at
A. 770°C
B. 1440°C
C. 910°C
D. 1539°C
12. For an ideal gas Cp -Cv is
A. R
B.
C. 0
D. 00
13. Units of Diffusion Coefficient are:
A. No units
B. m 2/sec
C. N/m2
D. N/sec2
14. Which variety ofCu has the best electrical conductivity?
A. Pure annealed Cu
B. Cu containing moderate concentration ofoxygen
C. Cold worked Cu
D. None ofthe above
4

15. Nickel which is to the left ofCu (3d104s1) in the first transition metal series has an outer electronic configuration of
A. 3d94s1
B. 3d84s2
C. 3d114s1
D. 3d104s2
16. Atomic packing factor for the diamond cubic structure is
A. 0.74
B. 0.68
C. 0.34
D. 0.25
17. The value ofthe summation is
A. In(x)
B. In(x)
C. eX
D. eX t
18. The following thermocouple may be used to measure temperature up to 1773 K
A. Chromel-alumel
B. Copper -constantan
C. Iron -constantan
D. Platinum -Platinum rhodium
19. The alloy used for cladding in thermal power reactors containing natural uranium as fuel
is
A.
B.
C.
Stainless steel Zirconium alloy Cadmium alloy Aluminium alloy
5 20. The melting temperature ofan intermetallic compound is

A. Spread over a range
B. A single temperature
C. Indeterminate
D. Always greater than the melting point ofthe major constituent
21. Which one is the natural polymer?
A. Cellulose
B. Polyethylene
C. Polyester
D. Vulcanized rubber
22. Ester is formed when alcohol reacts with
A. Carboxylic acid
B. Aldehyde
C. Ketone
D. Ether
23. The domain wall motion in ferromagnetic Fe is obstructed by
A. Dislocation tangles
B. Impurity atoms
C. Non-magnetic inclusions
D. All ofthe above
24. For lasing action the energy gap of a semiconductor should be
A. Direct bandgap
B. Indirect gap
C. No band gap
None ofthe above

6

25. cia ratio ofideal HCP unit cell is
A. 1
B. 1.54
C. 1.63
D. 1.88
7


PART
26. Castironisusedinthebase ofmachinerysubjectedtointermittentloadingbecause ofits
A. Load shedding capacity
B. Damping capacity
C. Anti-friction property
D. High thermal conductivity
.X
. XSIni·
27.
l-cosx
A. 1
B. 2
C. o
D. 1
2
28. Ifawire oflengthL isembeddedalongtheaxis inacylinder ofheightH probability ofobserving the wire when a random section is cut perpendicular to axis of cylinder is
A. L/H
B. H/L
C. 2L/H
D. none ofthese
29. Which of the following statements is true?
A. Engineering stress and true stress have the same value
B. Engineering strain and true strain have the same value
C. Engineering stress is higher than the true stress
D. Engineering stress is lower than the true stress
g

30. Indirect extrusion is also known as
A. Forward extrusion,
B. Backward extrusion
C. Extrusion
D. Shape extrusion
31. The volume occupied by the parallelopiped formed by the vectors
1"...[3" d-4
b c=-kIS
22...[3
A. 2
B.
C. 1
D.
32. Zone refining is
A. An equilibrium process
B. Non-equilibrium process
C. Grain refining process
D. Deformation process
33. In energy dispersive spectrometer attached to an electron microscope, the elemental identification is carried out using
A. Characteristic x-rays
B. Bremsstrahlung
C. Auger electrons
D. Photoelectrons
34. Stacking sequence along direction of face centred cubic structure is
A. ABABABABAB .
B.. ABCABCABC .

C. ABACABACAB .
D. AABBAABBAABB .
9

35. Driving force for grain growth after complete recrystallisation is
A. Stored energy ofcold work
B. Reduction in grain boundary area
C. Reduction in dislocation density
D. None ofthe above
36. The number of second nearest neighbours in simple cubic structure is
A. 8
B. 6
C. 12
D. 10
37. Torsion test can be used to determine
A. Young's modulus ofmaterial
B. Shear modulus ofmaterial
C. Bulk modulus of material
D. Elastic limit ofmaterial
38. Pig iron is produced in
A. Bessemer converter
B. Open hearth furnace
C. Blast furnace
D. Cupola
39. Forging is a
A. Batch process
B. Continuous process
C. A semi-continuous process
D. Sheet working process
10

40. IfC=AB-BA,whereA and B then the eigen values of C are
A. -i and
22
11

B. -and
22
C. -i and
44
11
D. -and
44
41. A radioactive nucleus of type 1 decays exponentially with a decay to stable nucleus of type 2 if at time t the number of type 1 and 2 nuclei are respectively N1( t No and N 2(t what is the number oftype 2 nucleus present at time
A. No
B. No
C. No +exp-All)
D. 1-No exp-Alt
42. Above Curie temperanu:e, the hysteresis loop of a ferro-electric material merges ipto a
A. Point
B. Straight line
C. Parabola
D. Cycloid
43. Above the Neel temperature, a magnetic material becomes
A. Ferromagnetic
B. Paramagnetic
C. Diamagnetic
D. None ofthe above
11


44. In superconducting state
A. Entropy and thermal conductivity decrease
B. Entropy and thermal conductivity increase
C. Entropy decreases while thermal conductivity increases
D. Entropy increases while thermal conductivity decreases
45. The Miller indices are same for
A. a plane and directions in those planes
B. Parallel planes
C. Planes perpendicular to each other
D. Planes having the same interplanar spacing
46. A certain amount ofice at O°C melts into water at O°C and in so doing gains 1kg ofmass. Calculate its initial mass.
A. 2.7 X 1011 g
B. 2.7x10llkg
C. 3.8x1011g
D. 3.8 x 1011kg
47. Erosion -corrosion is a
A. Chemical attack
B. Mechanical abrasion
C. Combined action of chemical attack and mechanical abrasion
D. Due to fluid velocity
48. . Laplace transform IofX} dt e-st ret) ofthe function ret) .fnt is
1
A.

B.
C. 1
.J1lS3/ 2
D. 1

12




49. Which ofthe following is the hardest material?
A. Hardened steel
B. Tungsten carbide
C. Boron carbide
D. Alloy steels
50. Permalloy is a
A. Kind ofstainless steel
B. Polymer
C. Nickel and iron alloy having high permeability
D. Cutting tool material
51. Which ofthe following is not a casting
A. Carthias process
B. Extrusion
C. Semi-centrifuge method
D. Slush process
52. Which is the false statement about tempering?
A. Improves toughness
B. Improves machinability
C. Releases stresses
D. Reduces hardness and brittleness
53. The minimum energy required to impose an elastic strain of e to a metal having unit volume and a constant flow stress, cr, is
A. cre
B. 2ae
1
C.
2
3

D.
4
13
54. The elastic strain in copper is due to
A. Change in atomic bond length
B. Breakage ofatomic bonds
C. Motion of dislocation
D. None ofthe above
55. During tensile test, a ductile fracture is characterized by
A. Beach marks
B. Cup and·Cone
C. Cleavage facets
D. Quasi-cleavage
56. Dislocation generation in polycrystalline materials occurs by
A. Cottrell-Bilby source
B. Johnston-Gilman source
C. Frank-Read source
D. Nabarro-Herring source
57. A small amount ofthoria is doped into tungsten filament wires used in light bulbs. This is because thoria particles
A. Decreaeses solute diffusivity
B. Enhances the mobility of grain boundary
C. Increases solute segregation to grain boundary
D. Are effective in limiting grain growth
58. ShearmodulusofAlis28.0GPa.Thetheoreticalfracturestrengthofdislocation free single crystal ofaluminium is
A. 28.0 GPa
B. 9.3 GPa
C. 0.1 GPa
D. 0.01 GPa
14
59. A crystal undergoes a transformation from FCC to BCC structure but the lattice parameterremainsthesameforbothphases. Which ofthefollowingstatementsistrue?
A. Density ofmaterials before and after the transformation and the volume of the unit cell are different
B. Density ofmaterials before and after the transformation is the same but volume ofthe unit cell is different
C. Density ofmaterials before and after the transformation is the same but volume ofthe unit cell before and after the transformation is the same
D. Densityofmaterialsbeforeandafterthetransformation isdifferentbut volume ofthe unit cell remains the same
60. The spectrum ofradiation emitted by black body at a temperature of 1000 K peaks in the
A. Visible range ofwavelengths
B. Infra'red range of wavelengths
C. Ultra violet range ofwavelengths
D. Radio wave range ofwavelengths
61. Ifthevolume ofunitcube ofamaterialdoesnotcharigeduringdeformation,thenthe Poisson's ratio should be
A. 0.25
B. 0.37
C. 0.50
D. 1.0
62. The defects which have most detrimental effect on the fracture toughness ofmaterials are
A. Fine coherent precipitates
B. Inclusion
C. Incoherent spherical precipitates
D. Microcracks
15
63. The empirical relationship that exhibits linear relationship between cyclic stress and mean stress on fatigue life is called as
A. Gerber's relationship
B. Goodman relationship
. C. Baushinger relationship

D. Coffin-Manson relationship
64. During the ferromagnetic to paramagnetic transition ofiron, the property that changes abruptly is
A. Gibb's free energy
B. Enthalpy
C. Entropy
D. Heat capacity
65. During stretching ofan ideal elastomer, its enthalpy
A. Increases
B. Remains constant
C. Decreases
D. None of the above
66. . Eutectoid reaction is given by
A. +Liquid2
B.
C.
D.
67. Radiation pYr0meters are used
A. For measurement of radiation dose
B. For determining viscosity ofliquids
c.
For temperature measurement

D.
For measuring length ofrail track


16


68. The yield-point phenomenon observed in annealed low carbon steel is due to the presence of
A. Silicon
B. Carbon
C. Phosphorous
D. Chromium
69. A cold worked material is annealed at high temperature. Increase in the percentage of
cold work, the recrystallization temperature

A. Increases
B. Decreases
C. Remains constant
D. None ofthe above
70. Why are semiconductors transparent to IR light although opaque to visible light?
A. Valence electrons can find unoccupied excited energy states in the conduction band for any excitation energy, however small
B. The energy gap is so large that photons ofvisible light cannot provide enough excitation energy from electrons in the valence band to reach the conduction band
C. The energy gap is small and so photons ofvisible light can excite valence electrons to the conduction band although photons of IR light have insufficient energy for the purpose
D. None ofthe above
71. Routine inspectionfor defects in locomotive axles and rails can be possible by
A. Radiography
B.. Ultrasonic testing

C. Thermography
D. Holography
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72. On increasingthe impurityconcentration inthemetal,the residual componentofthe resistivity
A. Decreases
B. Increases ..
C. Remains constant
D. Can be made zero
73. The processing method used to improve the creep resistance ofthe material by reduction oftransverse grain boundaries is
A. Rotary swaging
B. Directional solidification
C. Cold rolling
D. Hot extrusion
74. Martensitic transformation is a
A. Diffusional transformation
B. Displacive transformation
C. Spinodal transformation
D. Ordering transformation
75. The ASTM grain size number N for a structural steel which shows 65 grains per square inch at a magnification of1OOX is
A. 1
B. 3
C. 5
D. 7
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