McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 1. |
Hooke's law holds good up to.. |
| A. | yield point |
| B. | proportional limit |
| C. | plastic limit |
| D. | breaking point |
| Answer» B. proportional limit | |
| 2. |
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» A. modulus of elasticity | |
| 3. |
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» D. 210 kn/mm2 | |
| 4. |
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» B. directly proportional | |
| 5. |
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» C. factor of safety | |
| 6. |
An aluminum member is designed based on |
| A. | yield stress |
| B. | elastic limit stress |
| C. | proof stress |
| D. | ultimate stress |
| Answer» A. yield stress | |
| 7. |
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» C. 0.23 to 0.27 | |
| 8. |
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» B. 0.25 to 0.33 | |
| 9. |
The property of material to absorb shock energy without failure is known as…. |
| A. | elasticity |
| B. | toughness |
| C. | stiffness |
| D. | resilience |
| Answer» B. toughness | |
| 10. |
Young’s modulus of Elasticity for perfectly rigid body is…. |
| A. | zero |
| B. | unity |
| C. | infinity |
| D. | none of these |
| Answer» C. infinity | |
| 11. |
The stress is…. |
| A. | scalar |
| B. | vector |
| C. | tensor |
| D. | none of the above |
| Answer» C. tensor | |
| 12. |
The Poisson’s ratio for perfectly rigid body is |
| A. | 1 |
| B. | 0 |
| C. | -1 |
| D. | 0.5 |
| Answer» B. 0 | |
| 13. |
Shearing strain is represented by……… |
| A. | angle of twist |
| B. | angle of shear |
| C. | deforming force |
| D. | deforming torque |
| Answer» B. angle of shear | |
| 14. |
Greater the value of modulus of elasticity more…is the material |
| A. | plastic |
| B. | elastic |
| C. | brittle |
| D. | ductile |
| Answer» B. elastic | |
| 15. |
Stress does not depand upon |
| A. | applied force |
| B. | area of c/s |
| C. | modulus of elasticity |
| D. | none |
| Answer» C. modulus of elasticity | |
| 16. |
stress does not depend upon |
| A. | applied force |
| B. | area of c/s |
| C. | change in length |
| D. | none |
| Answer» C. change in length | |
| 17. |
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» C. smaller than | |
| 18. |
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» D. all of above | |
| 19. |
The value of K for perfectly rigid body is |
| A. | zero |
| B. | 1 |
| C. | -1 |
| D. | infinity |
| Answer» D. infinity | |
| 20. |
Time dependent permanent deformation is called as |
| A. | plastic deformation |
| B. | elastic deformation |
| C. | creep |
| D. | an elastic deformation |
| Answer» C. creep | |
| 21. |
Figure out the odd point in the following |
| A. | proportional limit |
| B. | elastic limit |
| C. | yield point |
| D. | fracture point |
| Answer» D. fracture point | |
| 22. |
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» C. yield point | |
| 23. |
Shape of true stress strain curve of material depends upon |
| A. | strain |
| B. | strain rate |
| C. | temperature |
| D. | all of the above |
| Answer» D. all of the above | |
| 24. |
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» B. directly proportional to strain | |
| 25. |
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» D. modulus of elasticity | |
| 26. |
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» A. poisson's ratio | |
| 27. |
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» C. modulus of rigidity | |
| 28. |
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» B. bulk modulus | |
| 29. |
Hooke's law holds good up to |
| A. | proportional limit |
| B. | yield point |
| C. | elastic limit |
| D. | plastic limit |
| Answer» A. proportional limit | |
| 30. |
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» C. elasticity | |
| 31. |
The work done in producing strain on a material per unit volume is called |
| A. | resilience |
| B. | ductility |
| C. | elasticity |
| D. | plasticity |
| Answer» A. resilience | |
| 32. |
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» B. malleability | |
| 33. |
The Combined effect of external forces acting on body is called |
| A. | stress |
| B. | strain |
| C. | load |
| D. | none |
| Answer» C. load | |
| 34. |
………….Load is one which is considered to act at a point. |
| A. | triangular |
| B. | uniformly distributed load |
| C. | point |
| D. | none |
| Answer» C. point | |
| 35. |
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» A. stress | |
| 36. |
The Unit of stress in SI unit is |
| A. | mn/mm2 |
| B. | kn/mm2 |
| C. | n/mm2 |
| D. | all of above |
| Answer» D. all of above | |
| 37. |
……….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» A. unit stress | |
| 38. |
Simple stress is often called |
| A. | direct stress |
| B. | transverse stress |
| C. | total stress |
| D. | any of above |
| Answer» A. direct stress | |
| 39. |
The deformation per unit length is called………. |
| A. | strain |
| B. | tensile stress |
| C. | compressive stress |
| D. | shear stress |
| Answer» A. strain | |
| 40. |
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» A. dl/l | |
| 41. |
If V is the volume of a rectangular bar subjected to a three dimensional stress state and the Poisson's ratio for the material is 0.5, the change in volume of the bar will be __ _. |
| A. | v |
| B. | 2v |
| C. | 0.5v |
| D. | 0 |
| Answer» D. 0 | |
| 42. |
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» D. 2.5g | |
| 43. |
The modulus of elasticity of a material is 210 GPa and its Poisson's ratio is 0.4. The modulus of rigidity of the material is |
| A. | 210 |
| B. | 75 |
| C. | 350 |
| D. | 300 |
| Answer» B. 75 | |
| 44. |
The value of factor of safety is always |
| A. | >1 |
| B. | <1 |
| C. | =1 |
| D. | =0 |
| Answer» A. >1 | |
| 45. |
The value of margin of safety is always |
| A. | >1 |
| B. | <1 |
| C. | =1 |
| D. | >0 |
| Answer» D. >0 | |
| 46. |
If the working load is one third of the ultimate load, the factor of safety is |
| A. | 0.333 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» B. 3 | |
| 47. |
If 1 is subtracted from the ratio of yield stress to working stress the quantity obtained is known as |
| A. | margin of safety |
| B. | f.o.s. |
| C. | modulus of elasticity |
| D. | none of the above |
| Answer» A. margin of safety | |
| 48. |
Stress does not depend upon |
| A. | applied force |
| B. | area of c/s |
| C. | change in length |
| D. | none of the above |
| Answer» C. change in length | |
| 49. |
Stress does not depend upon |
| A. | applied force |
| B. | area of c/s |
| C. | modulus of elasticity |
| D. | none of the above |
| Answer» C. modulus of elasticity | |
| 50. |
A metal plate of length L and width b has a circle drawn on it. If it is subjected to a compressive stress acting along its width, the circle will |
| A. | remain circle of same radius |
| B. | become ellipse with major axis along its width |
| C. | become ellipse with major axis along its length |
| D. | become circle of smaller radius |
| Answer» C. become ellipse with major axis along its length | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.