1. cast iron, glass, concrete, bricks etc. shows
type of fracture
Correct : A. cleavege
2. mild steel, gold, silver, copper, aluminium, etc. shows type of fracture
Correct : B. cupcone
3. Cleavage fracture is the main characteristics
of
Correct : B. brittle material
4. cup and cone type fracture is the main characteristics of
Correct : A. ductile material
5. shows good behavious under
tensile type of loading
Correct : A. ductile material
6. are not used under tensile type
loading
Correct : B. brittle material
7. A 40 cm long rod of diameter 0.5 cm is loaded with 5 kN weight. The engineering stress in the rod is Mpa
Correct : A. 255
8. a 40 cm long rod of diameter 0.3 cm is subjected to 2 kn load. If the diamter of rod is reduced to 0.25 cm, then enginerring strain in the rod is
Correct : B. 0.2
9. a 40 cm long rod of diameter 0.3 cm is subjected to 2 kN load. If the diameter of rod is reduced to 0.25 cm then true strain in rod is
Correct : C. 0.36
10. a 40 cm long rod of diameter 0.3 cm is subjected to 2 kN load. If the diameter of rod is reduced to 0.25 cm then true stressin rod is
Correct : D. all of the above
11. if engineering stress for a material is 250 Mpa and engineering strain is 0.2 , then true stress is
Correct : D. 50 mpa
12. if engineering stress for a material is 250 Mpa and engineering strain is 0.2 , then true strain is
Correct : C. 0.18
13. if yield trength of metal plate is σ under load P then the width of plate is . Take 't' as thickness of plate
Correct : A. p/σt
14. a copper of thickness 10 mm is subjected to a lod of 10000 N. if yield strength of copper is 150 then, the width of plate is
Correct : B. 0.7 cm
15. a nickel stell has engineeringnstress of 610 N/mm2 . The reduction in area of cross section at the fracture was 38 %. The true stress in the material is
Correct : D. 0.232
kn/mm2
16. an aluminium tensile test specimen has reduction area of 44%. Its true strain is
Correct : A. 0.44
17. tensile test was conducted on a steel specimen of diameter 20 mm and gauge length 75 mm. the gauge length and diameter during fracture are 95 mm and 12 mm respectively. Its elongation is
Correct : B. 27%
18. tensile test was conducted on a steel specimen of diameter 20 mm and gauge length 75 mm. the gauge length and diameter during fracture are 95 mm and 12 mm respectively. If load at upper yield point is 500 kg, the upper yield stress is
Correct : A. 15.9
19. tensile test was conducted on a steel specimen of diameter 20 mm and gauge length 75 mm. the gauge length and diameter during fracture are 95 mm and 12 mm respectively. If ultimate tensile load is 8000 kg, the UTS is
Correct : B. 249.8
20. an Aluminium plate of thickness 10 mm is subjected to a force 'F' . If yield strength of aluminium is 150 N/mm2 and width of plate is 60 mm, force F is kN
Correct : D. 90
21. a steel specimen during the test subjected to a stress of 300 N/mm2 and strain 1.5 x 10-3. the modulus of elasticity of steel is
Correct : C. 200 gpa
22. a concrete specimen of square cross section is subjected to a force of 100 kN. A side of square is 75 mm. if strain in concrete block is
1.5 x 10-3, the value of youngs modulus for
concrete is
Correct : B. 11.85
kn/mm2
23. a steel specimen is subjected to a stress of 300 Mpa. If E = 200 Gpa, modulus of resilience is
Correct : A. 0.225
24. if total amount of energy absorbed by a steel specimen is 5 N-m for a volume of 10 x 10-3 mm3, the modulus of toughness is
N/mm2
Correct : B. 0.5
25. an aluminium specimen is subjected to a stress of 160 /mm2 and corressponding modulus of resilience is 0.128 Mpa.
Youngs modulus for aluminium is
Correct : D. 100 gpa
26. shows the good behevoiur under compression type of loading
Correct : B. brittle material
27. are not used under compression type of loading
Correct : A. ductile material
28. compression test is carried on
machine
Correct : A. universal testing
29. compression test gives best results for
material
Correct : D. all of the above
30. during compression test, the point at which fracture initiates in material is called as
Correct : C. compressive
stress
31. a compression test specimen has
cross section
Correct : D. all of the above
32. in compression test, the length to diameter ratio is between
Correct : C. 1.5 to 10
33. in compression test with increase in the length to diameter ratio, compressive strength
Correct : B. decreases
34. hourglass fracture is observed in
test
Correct : A. compression
35. sheat stress is maximum at an angle of
Correct : C. 45
36. in compression test, the top and bottom faces of the specimen on which load is applied should be
Correct : C. perfectly parallel
37. during compression test, stress distribution is non-uniform because of
Correct : D. all of the above
38. a commonly used ratio for compression test
is
Correct : B. 2
39. if the ductile material testes in compression it
shows
Correct : D. both a and c
40. during compression test, the point at which the material breaks into small pieces is called as
Correct : D. crushing strength
41. in test, due to application of forces body slide relative to each other
Correct : A. shear
42. stress acts parallel to the plane
Correct : D. shear
43. shear test is suitable for
Correct : D. all of the
44. is the tangent to the angular
distortion
Correct : C. shear strain
45. is the ratio of shear stress to
shear strain
Correct : A. modulus of rigidity
46. is the point at which nominal
surface stress occurs
Correct : B. modulus of rupture
47. Tensional effect is observed in components
like
Correct : D. all of the above
48. is a twisting action which results in shear stresses and
strains
Correct : B. torsion
49. torsion test is carried on machine
Correct : D. none of the
above
50. bend test is also called as
Correct : D. formability
51. bend test is used to find
Correct : C. ductility of material
52. in beam cross-sections,the axis along which the bending stresses are zero, is called as
axis
Correct : D. neutral
53. for materials having high ductility,
type of bend test is used
Correct : C. 1800
54. in type of bend test, specimen is held at two points and load is applied at the center
Correct : D. cold
55. the diameter of punch used in cold bend test depends upon
Correct : D. all of the above
56. 1800 bend test is also called as
Correct : B. reverse bend
test
57. impact test is also called as test
Correct : A. dynamic
58. the tendancy of ductile material to fail as brittle material when it is notched is called as
Correct : C. notch sensitivity
59. the temperature at which ductlie material fails in brittle manner is called as temperature
Correct : D. transiiton
60. the factor which is responsible for failure of ductile material in brittle manner is
Correct : D. all of the above
61. impact test is used for measuring the
Correct : D. all of the above
62. the sucspectbility of material for brittle fracture under triaxia state of stress is found by test
Correct : C. impact
63. in impact test, specimens are used
Correct : A. notched
64. the notch provided on impact test specimen
is of shape
Correct : C. v
65. in charpy impact test, the weight of pendulum is
Correct : B. 20.93 kg
66. in izod imapct test, the weight of pendulum is
Correct : A. 21.79 kg
67. the length of arm of pendulum in izod test is
Correct : B. 0.758 m
68. the length of arm of pendulum in charpy test
is
Correct : A. 0.825 m
69. in charpy impact test, the pendulum is released from an angle of degree
Correct : C. 140
70. in izod impact test, the pendulum is released from an angle of degree
Correct : D. 85
71. in charpy test, the size of specimen is
mm
Correct : C. 10x10x55
72. in izod imapct test, the size of specimen is
mm
Correct : A. 10x10x75
73. during the imapct test the toughness of material is given by
Correct : D. w(h\-h\)
74. in charpy test, specimen with
notch is used
Correct : D. all of the above
75. in charpy impact test, the length of specimen between he anvils is
Correct : A. 40 mm
76. charpy and izod tests are consucted on
machine
Correct : D. impact testing
77. the velocity of impact test depends on
Correct : D. all of the above
78. in impact test, the velocity of hammer is
Correct : B. 3 to 5 m/s
79. brittle transition temperatuer depends on
Correct : D. all of the above
80. in impact test, surface fractures are
observed
Correct : D. all of the above
81. the main purpose of erichsen cupping test is
to measure
Correct : B. shear strength of material
82. in erichsen cupping test, a sample of sheet metal is deep drawn and its is measured
Correct : D. depth
83. erichsen cupping test machine consists of
parts
Correct : D. all of the above
84. in test , a specimen is in the form
of sheet
Correct : C. erichsen cupping
85. the sheet metal thickness for erichsen cupping test is in the range of
Correct : C. 0.25 to 2.5
mm
86. in erichsen cupping test for measuring the depth of cup is used
Correct : B. micrometer
dial
87. radial and circular cracks are observed in
test
Correct : C. erichsen cupping
88. when the metal fails with radial cracks, it indicates ability
Correct : B. poor drawing
89. when the metal fails with circular cracks, it indicates ability
Correct : A. good drawing
90. a 40 cm long rod of diameter 0.3 cm is subjected to 2 kN load. If the diameter of rod
Correct : C. 0.36
91. Following point is not applicable for NDTs
Correct : C. evaluation of mechanical properties
92. Which of the following is true for Magnetic
particle inspection
Correct : A. material must be ferromagneti c
93. Longitudinal Magnetisation is used to detect
Correct : A. transeverse
cracks
94. Transeverse Magnetisation is used to detect
Correct : B. longitudina l cracks
95. Magnetisation is important in MPT
Correct : A. true
96. Skin effect is desirable in MPT
Correct : B. non- desirable
97. Magnaglo method uses
Correct : C. fluorescent powder
98. Following is a Limitation for MPT
Correct : C. both a & b
99. Surface Defects in ceramics can be detected
by MPT
Correct : B. false
100. Which of the following Statement is false :-
MPT detects