MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 72 Mcqs, each offering curated multiple-choice questions to sharpen your Strength Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The steel plate is bent into a circular path of radius 10 metres. If the plate section be 120 mm wide and 20 mm thick, then calculate the maximum bending stress. [Consider Young’s modulus = 200000 N/mm2]. |
| A. | 350 N/mm2 |
| B. | 400 N/mm2 |
| C. | 200 N/mm2 |
| D. | 500 N/mm2 |
| Answer» D. 500 N/mm2 | |
| 2. |
Calculate the maximum stress due to Bending in a steel strip of 30 mm thick and 60 mm wide is bent around a circular drum of 3.6 m diameter [Take Young’s modulus = 200kN/m2]. |
| A. | 2341.76 N/mm2 |
| B. | 1666.67 N/mm2 |
| C. | 5411.76 N/mm2 |
| D. | 4666.67 N/mm2 |
| Answer» C. 5411.76 N/mm2 | |
| 3. |
What are the units of true strain? |
| A. | Kg/m² |
| B. | Kg/ m³ |
| C. | No dimensions |
| D. | N/mm |
| Answer» D. N/mm | |
| 4. |
Revert size is generally expressed in terms of _______ |
| A. | Shank width |
| B. | Girder length |
| C. | Lap length |
| D. | Shank diameter |
| Answer» E. | |
| 5. |
________ joints are necessary to keep a structure safe against shrinkage. |
| A. | Construction |
| B. | Functional |
| C. | Transverse |
| D. | Longitudinal |
| Answer» C. Transverse | |
| 6. |
In flitched beams ______ remains same for both materials. |
| A. | Stress |
| B. | Strain |
| C. | Section modulus |
| D. | Young’s modulus |
| Answer» C. Section modulus | |
| 7. |
A continuous beam is one which is _______ |
| A. | Infinitely long |
| B. | Supported at two points |
| C. | Supported it more than two supports |
| D. | Supported by a prop |
| Answer» D. Supported by a prop | |
| 8. |
What are the units of flexural rigidity? |
| A. | Nm² |
| B. | Nm |
| C. | N/m |
| D. | m/N³ |
| Answer» B. Nm | |
| 9. |
The specific gravity of sand is __________ |
| A. | 2.8 |
| B. | 2.25 |
| C. | 3.2 |
| D. | 2.65 |
| Answer» E. | |
| 10. |
What is the product of force and radius? |
| A. | Twisting shear |
| B. | Turning shear |
| C. | Turning moment |
| D. | Tilting moment |
| Answer» D. Tilting moment | |
| 11. |
What is the moment due to dead load in case of continuous beams at the middle of interior spans? |
| A. | w L³ / 12 |
| B. | w L²/ 14 |
| C. | w 3/ 20 |
| D. | w L² / 24 |
| Answer» E. | |
| 12. |
The effective length of column depends upon ________ |
| A. | the cross section of beam |
| B. | end conditions |
| C. | maximum bending moment |
| D. | extreme fibres |
| Answer» C. maximum bending moment | |
| 13. |
What are the units of axial stiffness? |
| A. | m³ |
| B. | m² |
| C. | N/ m |
| D. | -m |
| Answer» D. -m | |
| 14. |
What are the units for section modulus? |
| A. | m² |
| B. | m⁴ |
| C. | m³ |
| D. | m |
| Answer» D. m | |
| 15. |
To what radius a silver strip 200 mm wide and 40 mm thick can be bent if the maximum stress in the ship is 80 N/mm². Young’s modulus for Silver is 80×10³ N/mm². |
| A. | 20m |
| B. | 30m |
| C. | 15m |
| D. | 35m |
| Answer» B. 30m | |
| 16. |
Calculate the modulus of section of rectangle beam of size 240 mm × 400 mm. |
| A. | 5.4 × 10⁶ mm³ |
| B. | 6.2 × 10⁶ mm³ |
| C. | 5.5 × 106 mm³ |
| D. | 6.4 × 10⁶ mm³ |
| Answer» E. | |
| 17. |
The product of modulus of elasticity (E) and polar moment of inertia (J) is called torsional rigidity. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 18. |
The strength of beams depend merely on________ |
| A. | Modulus section |
| B. | Moment of inertia |
| C. | Flexural rigidity |
| D. | Moment of resistance |
| Answer» B. Moment of inertia | |
| 19. |
The maximum _________ stresses occur at top most fibre of a simply supported beam. |
| A. | Tensile |
| B. | Compressive |
| C. | Shear |
| D. | Bending |
| Answer» C. Shear | |
| 20. |
In cantilever beams, there is _______ stress above neutral axis. |
| A. | Compressive |
| B. | Tensile |
| C. | Temperature |
| D. | Shear |
| Answer» C. Temperature | |
| 21. |
The phenomenon under which the strain of material varies under constant stress is known as ________ |
| A. | Creep |
| B. | Hysteresis |
| C. | Viscoelasticity |
| D. | Strain hardening |
| Answer» B. Hysteresis | |
| 22. |
What is the section modulus (Z) for a rectangular section? |
| A. | bd²/6 |
| B. | a³/6 |
| C. | bD³-bd³ |
| D. | D⁴-d⁴ |
| Answer» B. a³/6 | |
| 23. |
The bending stress in a beam is ______ to bending moment. |
| A. | Less than |
| B. | Directly proportionate |
| C. | More than |
| D. | Equal |
| Answer» C. More than | |
| 24. |
The steel plate is bent into a circular path of radius 10 metres. If the plate section be 120 mm wide and 20 mm thick, then calculate the maximum bending stress. [Consider Young’s modulus = 200000 N/mm²]. |
| A. | 350 N/mm² |
| B. | 400 N/mm² |
| C. | 200 N/mm² |
| D. | 500 N/mm² |
| Answer» D. 500 N/mm² | |
| 25. |
To what radius an Aluminium strip 300 mm wide and 40mm thick can be bent, if the maximum stress in a strip is not to exceed 40 N/mm². Take young’s modulus for Aluminium is 7×10⁵ N/mm². |
| A. | 45m |
| B. | 52m |
| C. | 35m |
| D. | 65m |
| Answer» D. 65m | |
| 26. |
The term “Tenacity” means __________ |
| A. | Working stress |
| B. | Ultimate stress |
| C. | Bulk modulus |
| D. | Shear modulus |
| Answer» C. Bulk modulus | |
| 27. |
_________ of a beam is a measure of its resistance against deflection. |
| A. | Strength |
| B. | Stiffness |
| C. | Deflection |
| D. | Slope |
| Answer» C. Deflection | |
| 28. |
The bending strain is zero at _______ |
| A. | Point of contraflexure |
| B. | Neutral axis |
| C. | Curvature |
| D. | Line of action of loading |
| Answer» C. Curvature | |
| 29. |
A steel rod of 25 mm diameter and 600 mm long is subjected to an axial pull of 40000. The intensity of stress is? |
| A. | 34.64 N/mm² |
| B. | 46.22 N/mm² |
| C. | 76.54 N/mm² |
| D. | 81.49 N/mm² |
| Answer» E. | |
| 30. |
Strength of the beam depends only on the cross section. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 31. |
The Poisson’s ratio for concrete is __________ |
| A. | 0.4 |
| B. | 0.35 |
| C. | 0.12 |
| D. | 0.2 |
| Answer» E. | |
| 32. |
______ strength is caused by a moment of resistance offered by a section. |
| A. | Shear |
| B. | Flexural |
| C. | Axial |
| D. | Longitudinal |
| Answer» C. Axial | |
| 33. |
A Steel rod 200 mm diameter is to be bent into a circular arc section. Find radius of curvature. Take f = 120N/mm² & E = 2×10⁵ N/mm². |
| A. | 134m |
| B. | 166m |
| C. | 162m |
| D. | 174m |
| Answer» C. 162m | |
| 34. |
The moment which resists the external bending is called ______ |
| A. | Moment of shear |
| B. | Tolerating moment |
| C. | Moment of resistance |
| D. | Maximum bending moment |
| Answer» D. Maximum bending moment | |
| 35. |
The ____ of strongest beam that can be cut out of a circular section of diameter D. |
| A. | Load |
| B. | Size |
| C. | material |
| D. | cross section |
| Answer» C. material | |
| 36. |
The hoop stress is also known as ______ |
| A. | Parametrical stress |
| B. | Surface stress |
| C. | Circumferential stress |
| D. | Lateral stress |
| Answer» D. Lateral stress | |
| 37. |
A hollow shaft has outside diameter 120 mm and thickness 20 mm. Find the polar moment of inertia (J). |
| A. | 16.36 × 10⁶ mm⁴ |
| B. | 14.65 × 10⁶ mm⁴ |
| C. | 10.32 × 10⁶ mm⁴ |
| D. | 23.18 × 10⁶ mm⁴ |
| Answer» B. 14.65 × 10⁶ mm⁴ | |
| 38. |
What is the approximate value of coefficient of linear expansion for steel? |
| A. | 13 × 10⁻⁶ /°C |
| B. | 11.5 × 10⁻⁶ /°C |
| C. | 12 × 10⁻⁶ /°C |
| D. | 16 × 10⁻⁶ /°C |
| Answer» C. 12 × 10⁻⁶ /°C | |
| 39. |
A rectangular beam 100 mm wide is subjected to a maximum shear force and 50 kN. Find the depth of the beam. |
| A. | 350 mm |
| B. | 185 mm |
| C. | 200 mm |
| D. | 250 mm |
| Answer» E. | |
| 40. |
Find the moment of resistance of rectangular beam off grid to 40 mm depth 400 mm if the bending stress is 15 N/mm². |
| A. | 78 kNm |
| B. | 84 kNm |
| C. | 96 kNm |
| D. | 132 kNm |
| Answer» D. 132 kNm | |
| 41. |
The moment resisting capacity of the cross section of a beam is termed as ______ of the beam. |
| A. | Stiffness |
| B. | Strength |
| C. | Modulus |
| D. | Inertia |
| Answer» C. Modulus | |
| 42. |
Curvature of the beam is __________ to bending moment. |
| A. | Equal |
| B. | Directly proportion |
| C. | Inversely proportion |
| D. | Coincides |
| Answer» C. Inversely proportion | |
| 43. |
At the neutral axis, bending stress is _____ |
| A. | Minimum |
| B. | Maximum |
| C. | Zero |
| D. | Constant |
| Answer» D. Constant | |
| 44. |
Maximum Shearing stress in a beam is at _____ |
| A. | Neutral axis |
| B. | Extreme fibres |
| C. | Mid span |
| D. | Action of loading |
| Answer» B. Extreme fibres | |
| 45. |
When a beam is subjected to simple bending, ____________ is the same in both tension and compression for the material. |
| A. | Modulus of rigidity |
| B. | Modulus of elasticity |
| C. | Poisson’s ratio |
| D. | Modulus of section |
| Answer» C. Poisson’s ratio | |
| 46. |
E/R = M/I = f/y is a bending equation. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 47. |
Determine the yield stress of a steel rod 20 mm diameter, if the yield load on the steel rod is 88kN. |
| A. | 240.55 N/mm² |
| B. | 280.25 N/mm² |
| C. | 325 N/mm² |
| D. | 290.45 N/mm² |
| Answer» C. 325 N/mm² | |
| 48. |
__________ joints are provided when there is a break in the concreting operation. |
| A. | transverse joints |
| B. | longitudinal joints |
| C. | construction joints |
| D. | warpage joints |
| Answer» D. warpage joints | |
| 49. |
What is the elongation percentage of a steel rod of 50 mm diameter if the total extension is is 54 mm and gauge length is 200 mm. |
| A. | 27% |
| B. | 23% |
| C. | 43% |
| D. | 35% |
| Answer» B. 23% | |
| 50. |
The stress corresponding to breaking point is known as _____________ |
| A. | yield stress |
| B. | ultimate stress |
| C. | breaking stress |
| D. | normal stress |
| Answer» D. normal stress | |