MCQOPTIONS
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MCQOPTIONS
This section includes 1232 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Cold working process is carried out on .. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» D. none of the above | |
| 52. |
radial and circular cracks are observed in test |
| A. | torsion |
| B. | tensile |
| C. | erichsen cupping |
| D. | compression |
| Answer» D. compression | |
| 53. |
the stress required to produce same deformation is higher in case of polycrystalline material as compared to polycrystalline materials |
| A. | coarse garined, fine grained |
| B. | fine grained, coarse grained |
| C. | a or b |
| D. | none of the above |
| Answer» D. none of the above | |
| 54. |
hourglass fracture is observed in test |
| A. | compression |
| B. | tensile |
| C. | impact |
| D. | bend |
| Answer» B. tensile | |
| 55. |
cold working requires higher than hot working |
| A. | temperature |
| B. | time |
| C. | energy for plastic deformation |
| D. | none of the above |
| Answer» D. none of the above | |
| 56. |
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 is1.5 x 10-3, the value of youngs modulus forconcrete is |
| A. | 11.85 n/mm2 |
| B. | 11.85 kn/mm2 |
| C. | 11.85 n/m2 |
| D. | 11.85 kn/m2 |
| Answer» C. 11.85 n/m2 | |
| 57. |
property is not directly shown on the stress strain curve |
| A. | ductility |
| B. | malleability |
| C. | stiffness |
| D. | all of the above |
| Answer» E. | |
| 58. |
erichsen cupping test machine consists of parts |
| A. | punch and die |
| B. | micrometer dial |
| C. | mirror for cup onservation |
| D. | all of the above |
| Answer» E. | |
| 59. |
cast iron, glass, concrete, bricks etc. shows type of fracture |
| A. | cleavege |
| B. | cupcone |
| C. | star |
| D. | irregular fibrous |
| Answer» B. cupcone | |
| 60. |
The critically resolved shear stress Tcr=(P cos cos )/A . the equation known as .....law. |
| A. | bragg s |
| B. | schmid s |
| C. | bauchinger s |
| D. | none |
| Answer» C. bauchinger s | |
| 61. |
is the ratio of shear stress to shear strain |
| A. | modulus of rigidity |
| B. | modulus of rupture |
| C. | modulus of elasticity |
| D. | modulus of toughness |
| Answer» B. modulus of rupture | |
| 62. |
in beam cross-sections,the axis along which the bending stresses are zero, is called as axis |
| A. | bending |
| B. | parallel |
| C. | perpendicula r |
| D. | neutral |
| Answer» E. | |
| 63. |
slip occurs along plane and in direction |
| A. | random, specific |
| B. | specific, random |
| C. | random, random |
| D. | specific, specific |
| Answer» E. | |
| 64. |
Burger vector to dislocation line is for edge dislocations |
| A. | perpendicul ar |
| B. | parallel |
| C. | inclined |
| D. | first perpendicul ar then parallel |
| Answer» C. inclined | |
| 65. |
in a face centred crystal structure there is number of face atoms |
| A. | 0 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 66. |
in a face centred crystal structure there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 67. |
in simple cubic crystal structure there arenumber of center atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| Answer» E. | |
| 68. |
the schmids law is used to calculate critical shear stress for _ structure |
| A. | polycrystalli ne |
| B. | single crystal |
| C. | atoms |
| D. | none of the above |
| Answer» C. atoms | |
| 69. |
No. of atoms in Body-Centered Cubic structure are ….. |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» C. 4 | |
| 70. |
dummy pointer on load - cell is used toindicate |
| A. | yield load |
| B. | breaking load |
| C. | ultimate load |
| D. | none of theabove |
| Answer» D. none of theabove | |
| 71. |
atoms are bonded with each other through bond |
| A. | covalent |
| B. | ionic |
| C. | both a and b |
| D. | a or b |
| Answer» E. | |
| 72. |
property is not directly shown onthe stress strain curve |
| A. | ductility |
| B. | malleability |
| C. | stiffness |
| D. | all of the above |
| Answer» E. | |
| 73. |
Radioactive decay of radium and saltwill cause generation of |
| A. | ultrasonic waves |
| B. | magnetic waves |
| C. | gamma rays |
| D. | x-rays and gamma rays |
| Answer» D. x-rays and gamma rays | |
| 74. |
In geometrical hardening, at the beginning λ is |
| A. | less than 45° |
| B. | more than 35° |
| C. | more than 45° |
| D. | less than 35° |
| Answer» B. more than 35° | |
| 75. |
radial and circular cracks are observed in test |
| A. | torsion |
| B. | tensile |
| C. | erichsen cupping |
| D. | compression |
| Answer» D. compression | |
| 76. |
for materials having high ductility, type of bend test is used |
| A. | close |
| B. | angle |
| C. | 1800 |
| D. | cold |
| Answer» D. cold | |
| 77. |
In MPT, when the part is magnetised , transverse cracks are easily detected |
| A. | lengthwise |
| B. | circular |
| C. | parallel tocrack |
| D. | none of theabove |
| Answer» B. circular | |
| 78. |
the stress required to produce same deformation is higher in case of polycrystalline material as compared to polycrystalline materials |
| A. | coarse garined, fine grained |
| B. | fine grained, coarse grained |
| C. | a or b |
| D. | none of the above |
| Answer» D. none of the above | |
| 79. |
the temperature at which ductlie material fails in brittle manner is called as temperature |
| A. | recrystallization |
| B. | creep |
| C. | fatigue |
| D. | transiiton |
| Answer» E. | |
| 80. |
Internal Defects can be detected by DyePenetrant Test |
| A. | always |
| B. | never |
| C. | fine internalcracks |
| D. | broad cracksonly |
| Answer» C. fine internalcracks | |
| 81. |
In MPT, skin effect comes into picture due to current |
| A. | ac |
| B. | dc |
| C. | both a & b |
| D. | none of theabove |
| Answer» B. dc | |
| 82. |
dislocations can glide & climb |
| A. | screw |
| B. | edge |
| C. | twinning |
| D. | cross |
| Answer» C. twinning | |
| 83. |
in modification of corrosion environment, technique resuces the moisture content of air in such a way that moisture should not condense on the metal surface causing corrosion |
| A. | deaeration |
| B. | deactivation |
| C. | dehumidifica tion |
| D. | all of the above |
| Answer» D. all of the above | |
| 84. |
is the maximum value of stress in theplastic region |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | proportionalstress |
| Answer» B. proof stress | |
| 85. |
On thermal excitation this defect may cause |
| A. | vacancy |
| B. | edge dislocations |
| C. | screw dislocations |
| D. | none of the above |
| Answer» B. edge dislocations | |
| 86. |
If the deformation is carried at 500°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 87. |
substance is used in alkaline neutralization to prevent corrosive effect of environment |
| A. | nh3 |
| B. | naoh |
| C. | lime |
| D. | all of the above |
| Answer» E. | |
| 88. |
a compression test specimen has cross section |
| A. | square |
| B. | rectangular |
| C. | circular |
| D. | all of the above |
| Answer» E. | |
| 89. |
wet corroison occurs under conditions |
| A. | when conducting liquid is in contact with metal |
| B. | when two dissimilar metals are immersed in aqueous |
| C. | single metals is dipped partially in aqueous solution of |
| D. | all of the above |
| Answer» E. | |
| 90. |
in izod imapct test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» B. 10x10x35 | |
| 91. |
Which of the following is true for dyepenetrant test |
| A. | used for any material |
| B. | used for only ferromagneti c materials |
| C. | only for plastics |
| D. | all |
| Answer» B. used for only ferromagneti c materials | |
| 92. |
is the phenomenon in which a metal or an alloy exibits higher corrosion resistabce than expected from its position in the electrochemical series by forming protective, thin, nonporous oxide film on the surface |
| A. | activity |
| B. | passivity |
| C. | both a and b |
| D. | none of the above |
| Answer» C. both a and b | |
| 93. |
if the ductile material testes in compression itshows |
| A. | bulging |
| B. | buckling |
| C. | bending |
| D. | both a and c |
| Answer» E. | |
| 94. |
in charpy test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» D. 10x10x45 | |
| 95. |
during tensile test, type of loadingshould be avoided |
| A. | shear |
| B. | eccentric |
| C. | repetitive |
| D. | all of the above |
| Answer» E. | |
| 96. |
it is type of stacking faults |
| A. | twinns |
| B. | glide |
| C. | climb |
| D. | intrisic |
| Answer» E. | |
| 97. |
The purpose of developer is to make thepenetrant |
| A. | in the crack invisible |
| B. | in the crackvisible |
| C. | chemically highly reactive |
| D. | all of theabove |
| Answer» C. chemically highly reactive | |
| 98. |
in a face centred crystal structure there is number of face atoms |
| A. | 0 |
| B. | 4 |
| C. | 8 |
| D. | 6 |
| Answer» E. | |
| 99. |
is the most widely used material |
| A. | pitch |
| B. | paints |
| C. | bitumen |
| D. | none of the |
| Answer» C. bitumen | |
| 100. |
in cubic crystal structure, the located atom is shared by 8 adjacent unit cells |
| A. | center |
| B. | face |
| C. | corner |
| D. | none of the above |
| Answer» D. none of the above | |