MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
According to principal stress theory, which option represents the correct relation between yield strength in shear (YSS) and the yield strength in tension (YST)?a) YSS=0.5YSTb) YSS=0.577YSTc) YST=0.5YSSd) YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses? |
| A. | YSS=0.5YSTb) YSS=0.577YSTc) YST=0.5YSSd) YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses?a) Compressive |
| B. | YSS=0.577YSTc) YST=0.5YSSd) YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses?a) Compressiveb) Tensile |
| C. | YST=0.5YSSd) YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses?a) Compressiveb) Tensilec) Both compressive & tensile |
| D. | YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses?a) Compressiveb) Tensilec) Both compressive & tensiled) None of the mentionedView Answer |
| Answer» B. YSS=0.577YSTc) YST=0.5YSSd) YST=0.577YSS 12 .A beam subjected to bending moment undergoes which of the following stresses?a) Compressiveb) Tensile | |
| 2. |
Modulus of rigidity for carbon steels is greater than that of grey cast iron. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following relationship is true? (p=Poisson’s ratio) |
| A. | E=2G (1+p) |
| B. | E=G (2+p) |
| C. | E= 2(G+ p) |
| D. | No relation exist between E, G and p |
| Answer» B. E=G (2+p) | |
| 4. |
If there are residual stresses in the material, than lower factor of safety is used. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
WHICH_OF_THE_FOLLOWING_RELATIONSHIP_IS_TRUE?_(P=POISSON‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_RATIO)?$# |
| A. | E=2G (1+p) |
| B. | E=G (2+p) |
| C. | E= 2(G+ p) |
| D. | No relation exist between E, G and p |
| Answer» B. E=G (2+p) | |
| 6. |
According to principal stress theory, which option represents the correct relation between yield strength in shear (YSS) and the yield strength in tension (YST)?$ |
| A. | YSS=0.5YST |
| B. | YSS=0.577YST |
| C. | YST=0.5YSS |
| D. | YST=0.577YSS |
| Answer» B. YSS=0.577YST | |
| 7. |
Modulus_of_rigidity_for_carbon_steels_is_greater_than_that_of_grey_cast_iron.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
The bending stress varies _______ with the distance from the neutral axis. |
| A. | Linearly |
| B. | Inversely |
| C. | Squarely |
| D. | Bending stress is independent of distance from the neutral axis |
| Answer» B. Inversely | |
| 9. |
A_beam_subjected_to_bending_moment_undergoes_which_of_the_following_stresses? |
| A. | Compressive |
| B. | Tensile |
| C. | Both compressive & tensile |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 10. |
If there are residual stresses in the material, than lower factor of safety is used? |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
The critical buckling load depends upon which of the following parameters? |
| A. | Yield strength |
| B. | Modulus of elasticity |
| C. | Radius of gyration |
| D. | Each of the mentioned |
| Answer» E. | |
| 12. |
Buckling is elastic instability which leads to sudden large lateral deflection. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Pitting occurs on _____ of the component. |
| A. | Surface |
| B. | Inner body |
| C. | Inside or on surface |
| Answer» B. Inner body | |
| 14. |
For components made of ductile materials like steel, subjected to static loading which of the following strength is used as a failure of criterion? |
| A. | Yield strength |
| B. | Ultimate strength |
| C. | Endurance limit |
| D. | None of the mentioned |
| Answer» B. Ultimate strength | |
| 15. |
For cast iron components, which of the following strength are considered to be the failure criterion? |
| A. | Ultimate tensile strength |
| B. | Yield Strength |
| C. | Endurance limit |
| D. | None of the mentioned |
| Answer» B. Yield Strength | |
| 16. |
Type of load affects factor of safety. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
A mechanical component may fail as a result of which of the following |
| A. | elastic deflection |
| B. | general yielding |
| C. | fracture |
| D. | each of the mentioned |
| Answer» B. general yielding | |