MCQOPTIONS
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MCQOPTIONS
This section includes 143 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
For material Poisson’s ratio is 0.25. Relation between E and G will be |
| A. | 0 |
| B. | 2g |
| C. | 3g |
| D. | 2.5g |
| Answer» E. | |
| 102. |
The value of margin of safety is always |
| A. | >1 |
| B. | <1 |
| C. | =1 |
| D. | >0 |
| Answer» E. | |
| 103. |
The value of factor of safety is always |
| A. | >1 |
| B. | <1 |
| C. | =1 |
| D. | =0 |
| Answer» B. <1 | |
| 104. |
If L and dL are are length and change in length respectively, then strain is equal to |
| A. | dl/l |
| B. | l/dl |
| C. | lxdl |
| D. | none |
| Answer» B. l/dl | |
| 105. |
The deformation per unit length is called………. |
| A. | strain |
| B. | tensile stress |
| C. | compressive stress |
| D. | shear stress |
| Answer» B. tensile stress | |
| 106. |
Simple stress is often called |
| A. | direct stress |
| B. | transverse stress |
| C. | total stress |
| D. | any of above |
| Answer» B. transverse stress | |
| 107. |
……….represents the resistance developed by a unit area of cross section. |
| A. | unit stress |
| B. | total stress |
| C. | either of above |
| D. | all of above |
| Answer» B. total stress | |
| 108. |
The Unit of stress in SI unit is |
| A. | mn/mm2 |
| B. | kn/mm2 |
| C. | n/mm2 |
| D. | all of above |
| Answer» E. | |
| 109. |
The internal resistance which the body offers to meet the load or external force is called |
| A. | stress |
| B. | strain |
| C. | pressure |
| D. | none |
| Answer» B. strain | |
| 110. |
………….Load is one which is considered to act at a point. |
| A. | triangular |
| B. | uniformly distributed load |
| C. | point |
| D. | none |
| Answer» D. none | |
| 111. |
The Combined effect of external forces acting on body is called |
| A. | stress |
| B. | strain |
| C. | load |
| D. | none |
| Answer» D. none | |
| 112. |
The property of material by virtue of which a material can be beaten into plates is called |
| A. | ductility |
| B. | malleability |
| C. | resilience |
| D. | plasticity |
| Answer» C. resilience | |
| 113. |
The work done in producing strain on a material per unit volume is called |
| A. | resilience |
| B. | ductility |
| C. | elasticity |
| D. | plasticity |
| Answer» B. ductility | |
| 114. |
The property of material by virtue of which a body returns to its original shape after removal of load is known as |
| A. | ductility |
| B. | plasticity |
| C. | elasticity |
| D. | resilience |
| Answer» D. resilience | |
| 115. |
Hooke's law holds good up to |
| A. | proportional limit |
| B. | yield point |
| C. | elastic limit |
| D. | plastic limit |
| Answer» B. yield point | |
| 116. |
The ratio of normal stress of each face of a solid cube to volumetric strain is called |
| A. | poisson's ratio |
| B. | bulk modulus |
| C. | modulus of rigidity |
| D. | modulus of elasticity |
| Answer» C. modulus of rigidity | |
| 117. |
The ratio of shear stress to shear strain is known as |
| A. | poisson's ratio |
| B. | bulk modulus |
| C. | modulus of rigidity |
| D. | modulus of elasticity |
| Answer» D. modulus of elasticity | |
| 118. |
the ratio of lateral strain to linear strain is known as |
| A. | poisson's ratio |
| B. | bulk modulus |
| C. | modulus of rigidity |
| D. | modulus of elasticity |
| Answer» B. bulk modulus | |
| 119. |
The ratio of linear stress to linear strain is known as |
| A. | poisson's ratio |
| B. | bulk modulus |
| C. | modulus of rigidity |
| D. | modulus of elasticity |
| Answer» E. | |
| 120. |
Within elastic limit in a loaded material, stress is |
| A. | inversely proportional to strain |
| B. | directly proportional to strain |
| C. | equal to strain |
| D. | none of the above |
| Answer» C. equal to strain | |
| 121. |
Shape of true stress strain curve of material depends upon |
| A. | strain |
| B. | strain rate |
| C. | temperature |
| D. | all of the above |
| Answer» E. | |
| 122. |
Engineering stress strain curve and true stress strain curve are equal up to |
| A. | proportional limit |
| B. | elastic limit |
| C. | yield point |
| D. | tensile strength point |
| Answer» D. tensile strength point | |
| 123. |
Figure out the odd point in the following |
| A. | proportional limit |
| B. | elastic limit |
| C. | yield point |
| D. | fracture point |
| Answer» E. | |
| 124. |
Time dependent permanent deformation is called as |
| A. | plastic deformation |
| B. | elastic deformation |
| C. | creep |
| D. | an elastic deformation |
| Answer» D. an elastic deformation | |
| 125. |
The value of K for perfectly rigid body is |
| A. | zero |
| B. | 1 |
| C. | -1 |
| D. | infinity |
| Answer» E. | |
| 126. |
Change in length of the rod due to change in temperature depends on… |
| A. | original length |
| B. | change in temperature |
| C. | coefficient of thermal expansion |
| D. | all of above |
| Answer» E. | |
| 127. |
modulus of elasticity for rubber is ……than that for steel. |
| A. | larger than |
| B. | equal to |
| C. | smaller than |
| D. | any of the above |
| Answer» D. any of the above | |
| 128. |
stress does not depend upon |
| A. | applied force |
| B. | area of c/s |
| C. | change in length |
| D. | none |
| Answer» D. none | |
| 129. |
Stress does not depand upon |
| A. | applied force |
| B. | area of c/s |
| C. | modulus of elasticity |
| D. | none |
| Answer» D. none | |
| 130. |
Greater the value of modulus of elasticity more…is the material |
| A. | plastic |
| B. | elastic |
| C. | brittle |
| D. | ductile |
| Answer» C. brittle | |
| 131. |
Shearing strain is represented by……… |
| A. | angle of twist |
| B. | angle of shear |
| C. | deforming force |
| D. | deforming torque |
| Answer» C. deforming force | |
| 132. |
The stress is…. |
| A. | scalar |
| B. | vector |
| C. | tensor |
| D. | none of the above |
| Answer» D. none of the above | |
| 133. |
The Poisson’s ratio for perfectly rigid body is |
| A. | 1 |
| B. | 0 |
| C. | -1 |
| D. | 0.5 |
| Answer» C. -1 | |
| 134. |
Young’s modulus of Elasticity for perfectly rigid body is…. |
| A. | zero |
| B. | unity |
| C. | infinity |
| D. | none of these |
| Answer» D. none of these | |
| 135. |
The property of material to absorb shock energy without failure is known as…. |
| A. | elasticity |
| B. | toughness |
| C. | stiffness |
| D. | resilience |
| Answer» C. stiffness | |
| 136. |
The Poisson’s ratio for steel varies from |
| A. | 0.21 to 0.25 |
| B. | 0.25 to 0.33 |
| C. | 0.33 to 0.38 |
| D. | 0.38 to 0.45 |
| Answer» C. 0.33 to 0.38 | |
| 137. |
The poisson's ratio for Cast Iron varies from |
| A. | 0.25 to 0.33 |
| B. | 0.21 to 0.25 |
| C. | 0.23 to 0.27 |
| D. | 0.33 to 0.38 |
| Answer» D. 0.33 to 0.38 | |
| 138. |
An aluminum member is designed based on |
| A. | yield stress |
| B. | elastic limit stress |
| C. | proof stress |
| D. | ultimate stress |
| Answer» B. elastic limit stress | |
| 139. |
The ratio of ultimate tensile stress to the design stress is known as |
| A. | elastic limit |
| B. | strain |
| C. | factor of safety |
| D. | bulk modulus |
| Answer» D. bulk modulus | |
| 140. |
When the material is loaded with elastic limit , then the stress is ……. to strain. |
| A. | equal |
| B. | directly proportional |
| C. | inversely proportional |
| D. | not equal |
| Answer» C. inversely proportional | |
| 141. |
The modulus of elasticity for mild steel is approximately equal to |
| A. | 80 kn/mm2 |
| B. | 100 kn/mm2 |
| C. | 110 kn/mm2 |
| D. | 210 kn/mm2 |
| Answer» E. | |
| 142. |
The ratio of linear stress to linear strain is called as |
| A. | modulus of elasticity |
| B. | modulus of rigidity |
| C. | bulk modulus |
| D. | poisson's ratio |
| Answer» B. modulus of rigidity | |
| 143. |
Hooke's law holds good up to.. |
| A. | yield point |
| B. | proportional limit |
| C. | plastic limit |
| D. | breaking point |
| Answer» C. plastic limit | |