MCQOPTIONS
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MCQOPTIONS
This section includes 80 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. |
Calculate the instantaneous elongation if a steel rod of 40 mm and 4 m long subjected to an axial pull of 80 kN. Take E = 2×105 N/mm2. |
| A. | 1.23 mm |
| B. | 1.27 mm |
| C. | 1.31 mm |
| D. | 1.43 mm |
| Answer» C. 1.31 mm | |
| 2. |
Which of the following is an exact estimate? |
| A. | Abstract |
| B. | Detailed |
| C. | Rough |
| D. | Preliminary |
| Answer» C. Rough | |
| 3. |
By ___________ estimate, a technical sanction is obtained. |
| A. | Approximate |
| B. | Detailed |
| C. | Abstract |
| D. | Preliminary |
| Answer» C. Abstract | |
| 4. |
Service unit method is related to ___________ estimate. |
| A. | Abstract |
| B. | Approximate |
| C. | Detailed |
| D. | Cubic content |
| Answer» C. Detailed | |
| 5. |
Which of the following estimates is also known as a preliminary estimate? |
| A. | Detailed estimate |
| B. | Scientific estimate |
| C. | Approximate estimate |
| D. | Abstract estimate |
| Answer» D. Abstract estimate | |
| 6. |
Which of the following rules is known as “Prismoidal Rule”? |
| A. | Mean sectional rule |
| B. | Trapezoidal rule |
| C. | Simpson’s rule |
| D. | Mid sectional rule |
| Answer» D. Mid sectional rule | |
| 7. |
What is the painting coefficient for flush doors? |
| A. | 2.3 |
| B. | 2.4 |
| C. | 3.4 |
| D. | 3.6 |
| Answer» C. 3.4 | |
| 8. |
In foundation concrete, coarse aggregate size should be __________ |
| A. | 20 mm |
| B. | 30 mm |
| C. | 40 mm |
| D. | 50 mm |
| Answer» D. 50 mm | |
| 9. |
Centre line method is accurate method. |
| A. | False |
| B. | True |
| Answer» C. | |
| 10. |
Calculate the Strain energy stored in a body of stress 0.0366 N/mm2. The cross sectional area is 60 m2and length of body is 1 m. Take E = 2×105 N/mm2. |
| A. | 0.2009 N.mm |
| B. | 0.0416 N.mm |
| C. | 0.0987 N.mm |
| D. | 0.1316 N.mm |
| Answer» B. 0.0416 N.mm | |
| 11. |
Mathematically, strain energy = _________ |
| A. | Power |
| B. | Work done |
| C. | Young’s Modulus |
| D. | Energy |
| Answer» C. Young’s Modulus | |
| 12. |
Resilience can also be termed as ___________ |
| A. | Stress energy |
| B. | Strain energy |
| C. | Modulus |
| D. | Tenacity |
| Answer» C. Modulus | |
| 13. |
The maximum instantaneous extension, produced by an unknown falling weight through a height of 4cm in a vertical bar of length 3m and of cross section area 5cm². What will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa? |
| A. | 1700 N |
| B. | 1459.4 N |
| C. | 1745.8 N |
| D. | 1947.5 N |
| Answer» D. 1947.5 N | |
| 14. |
A steel rod is 2m long and 50mm in diameter. A axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous stress induced in the rod? |
| A. | 101.89 N/mm² |
| B. | 94.25 N/mm² |
| C. | 130.45 N/mm² |
| D. | 178.63 N/mm² |
| Answer» B. 94.25 N/mm² | |
| 15. |
What is the modulus of resilience? |
| A. | The ratio of resilience to volume |
| B. | The ratio of proof resilience to the modulus of elasticity |
| C. | The ratio of proof resilience to the strain energy |
| D. | The ratio of proof resilience to volume |
| Answer» E. | |
| 16. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the stress in the rod if E=1×10⁵ N/mm²? |
| A. | 1.19mm |
| B. | 2.14mm |
| C. | 3.45mm |
| D. | 4.77mm |
| Answer» E. | |
| 17. |
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm² cross- sectional area. The upper end of the vertical bar is fixed. What is the maximum instantaneous stress induced in the vertical bar if E = 200GPa? |
| A. | 50.87 N/mm² |
| B. | 60.23 N/mm² |
| C. | 45.24 N/mm² |
| D. | 63.14 N/mm² |
| Answer» C. 45.24 N/mm² | |
| 18. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5cm long. What will be the stress in the rod if E=1×10⁵ N/mm²? |
| A. | 47.746 N/mm² |
| B. | 34.15 N/mm² |
| C. | 48.456 N/mm² |
| D. | 71.02 N/mm² |
| Answer» B. 34.15 N/mm² | |
| 19. |
What is the strain energy stored in a body when the load is applied gradually? |
| A. | σE/V |
| B. | σE²/V |
| C. | σV²/E |
| D. | σV²/2E |
| Answer» E. | |
| 20. |
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm² in section. What will be the strain (E=210GPa)? |
| A. | 0.00089 |
| B. | 0.0005 |
| C. | 0.00064 |
| D. | 0.00098 |
| Answer» B. 0.0005 | |
| 21. |
What is the strain energy stored in a body when the load is applied with impact? |
| A. | σE/V |
| B. | σE²/V |
| C. | σV²/E |
| D. | σV²/2E |
| Answer» E. | |
| 22. |
A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy in the bar if E=1×10⁵ N/mm²? |
| A. | 312.5 N-m |
| B. | 314500 N-mm |
| C. | 245.5 N-m |
| D. | 634 N-m |
| Answer» B. 314500 N-mm | |
| 23. |
A steel rod is 2m long and 50mm in diameter. An axial pull of 100kN is suddenly applied to the rod. What will be the instantaneous elongation produced in the rod if E=22GN/m²? |
| A. | 0.0097 mm |
| B. | 1.0754 mm |
| C. | 1.6354 mm |
| D. | 1.0186 mm |
| Answer» E. | |
| 24. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5m long. What is the strain energy in the rod if the load is applied suddenly (E = 2×10⁵ N/mm²)? |
| A. | 143.23 N-m |
| B. | 140.51 N-m |
| C. | 135.145 N-m |
| D. | 197.214 N-m |
| Answer» B. 140.51 N-m | |
| 25. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm diameter. What will be the maximum instantaneous stress induced? |
| A. | 95.493 N/mm² |
| B. | 45.25 N/mm² |
| C. | 85.64 N/mm² |
| D. | 102.45 N/mm² |
| Answer» B. 45.25 N/mm² | |
| 26. |
A tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm. What will be the instantaneous stress in bar? |
| A. | 100 N/mm² |
| B. | 120 N/mm² |
| C. | 150 N/mm² |
| D. | 250 N/mm² |
| Answer» E. | |
| 27. |
What will be the amount of axial pull be applied on a a 4cm diameter bar to get an instantaneous stress value of 143 N/mm²? |
| A. | 50kN |
| B. | 60kN |
| C. | 70kN |
| D. | 80kN |
| Answer» C. 70kN | |
| 28. |
What will be the stress induced in the rod if the height through which load is dropped is zero? |
| A. | P/A |
| B. | 2P/A |
| C. | P/E |
| D. | 2P/E |
| Answer» C. P/E | |
| 29. |
The mathematical expression for resilience ‘U’ is __________ |
| A. | U = σ²/E x volume |
| B. | U = σ²/3E x volume |
| C. | U = σ²/2E x volume |
| D. | U = σ/2E x volume |
| Answer» D. U = σ/2E x volume | |
| 30. |
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm² cross- sectional area. The upper end of the vertical bar is fixed. What is the strain energy stored in the vertical bar if E = 200GPa? |
| A. | 2.045 N-m |
| B. | 3.14 N-m |
| C. | 9.4 N-mm |
| D. | 2.14 N-m |
| Answer» B. 3.14 N-m | |
| 31. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 10m long. What will be the strain energy absorbed by the rod if E=1×10⁵ N/mm²? |
| A. | 100 N-m |
| B. | 132 N-m |
| C. | 148 N-m |
| D. | 143.2 N-m |
| Answer» E. | |
| 32. |
What is the strain energy stored in a body when the load is applied suddenly? |
| A. | σE/V |
| B. | σE²/V |
| C. | σV²/E |
| D. | σV²/2E |
| Answer» E. | |
| 33. |
The maximum strain energy stored at elastic limit is __________ |
| A. | Resilience |
| B. | Proof resilience |
| C. | Elasticity |
| D. | Malleability |
| Answer» C. Elasticity | |
| 34. |
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm² in section. What will be the instantaneous stress (E=210GPa)? |
| A. | 149.4 N/mm² |
| B. | 179.24 N/mm² |
| C. | 187.7 N/mm² |
| D. | 156.1 N/mm² |
| Answer» D. 156.1 N/mm² | |
| 35. |
A tensile load of 60kN is suddenly applied to a circular bar of 4cm and 5m length. What will be the strain energy absorbed by the rod if E=2×10⁵ N/mm²? |
| A. | 140.5 N-m |
| B. | 100 N-m |
| C. | 197.45 N-m |
| D. | 143.2 N-m |
| Answer» E. | |
| 36. |
2 tensile load of 100kN is suddenly applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy absorbed in the bar if E=1×10⁵ N/mm²? |
| A. | 312.5 N-m |
| B. | 314500 N-mm |
| C. | 1250 N-m |
| D. | 634 N-m |
| Answer» D. 634 N-m | |
| 37. |
The maximum instantaneous extension, produced by an unknown falling weight in a vertical bar of length 3m. What will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa? |
| A. | 100 N/mm² |
| B. | 110 N/mm² |
| C. | 120 N/mm² |
| D. | 140 N/mm² |
| Answer» E. | |
| 38. |
What is the relation between maximum stress induced due to gradual load to maximum stress the sudden load? |
| A. | Maximum stress in gradual load is equal to the maximum stress in sudden load |
| B. | Maximum stress in gradual load is half to the maximum stress in sudden load |
| C. | Maximum stress in gradual load is twice to the maximum stress in sudden load |
| D. | Maximum stress in gradual load is four times to the maximum stress in sudden load |
| Answer» C. Maximum stress in gradual load is twice to the maximum stress in sudden load | |
| 39. |
The property by which an amount of energy is absorbed by material without plastic deformation is called __________ |
| A. | Toughness |
| B. | Impact strength |
| C. | Ductility |
| D. | Resilience |
| Answer» E. | |
| 40. |
An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress? |
| A. | 50 N/mm² |
| B. | 60 N/mm² |
| C. | 70 N/mm² |
| D. | 80 N/mm² |
| Answer» E. | |
| 41. |
A tension bar 6m long is made up of two parts, 4m of its length has cross sectional area of 12.5cm while the remaining 2m has 25cm. An axial load 5tonnes is gradually applied. What will be the total strain energy produced if E = 2 x 10⁶ kgf/cm²? |
| A. | 240kgf/cm |
| B. | 242kgf/cm |
| C. | 264kgf/cm |
| D. | 270kgf/cm |
| Answer» C. 264kgf/cm | |
| 42. |
A steel has its yield strength of 200N/mm² and modulus of elasticity of 1x10⁵MPa. Assuming the material to obey hookes law up to yielding, what will be its proof resilience? |
| A. | 0.8 N/mm² |
| B. | 0.4 N/mm² |
| C. | 0.2 N/mm² |
| D. | 0.6 N/mm² |
| Answer» D. 0.6 N/mm² | |
| 43. |
A uniform bar has a cross sectional area of 700mm and a length of 1.5m. if the stress at the elastic limit is 160 N/mm, what will be the value of gradually applied load which will produce the same extension as that produced by the suddenly applied load above? |
| A. | 100kN |
| B. | 110kN |
| C. | 112kN |
| D. | 120kN |
| Answer» D. 120kN | |
| 44. |
The ability of a material to absorb energy when elastically deformed and to return it when unloaded is called __________ |
| A. | Elasticity |
| B. | Resilience |
| C. | Plasticity |
| D. | Strain resistance |
| Answer» C. Plasticity | |
| 45. |
What will be the instantaneous stress produced in a bar 10cm² in area ans 4m long by the sudden application of tensile load of unknown magnitude, if the extension of the bar due to suddenly applied load is 1.35mm if E = 2×10⁵ N/mm²? |
| A. | 67.5 N/mm² |
| B. | 47 N/mm² |
| C. | 55.4 N/mm² |
| D. | 78.5 N/mm² |
| Answer» B. 47 N/mm² | |
| 46. |
A 1m long bar of uniform section extends 1mm under limiting axial stress of 200N/mm². What is the modulus of resilience for the bar? |
| A. | 0.1 units |
| B. | 1 units |
| C. | 10units |
| D. | 100units |
| Answer» B. 1 units | |
| 47. |
A square steel bar of 10mm side and 5m length is subjected to a load whereupon it absorbs a strain energy of 100J. what is its modulus of resilience? |
| A. | 1/5 N-mm/mm³ |
| B. | 25 N-mm/mm³ |
| C. | 1/25 N-mm/mm³ |
| D. | 5 N-mm/mm³ |
| Answer» B. 25 N-mm/mm³ | |
| 48. |
What is the value of stress induced in the rod due to impact load? |
| A. | P/A (1 + (1 + 2AEh/PL)^1/2) |
| B. | P/A (2 + 2AEh/PL) |
| C. | P/A (1 + (1 + AEh/PL)^1/2) |
| D. | P/A ((1 + 2AEh/PL)^1/2) |
| Answer» B. P/A (2 + 2AEh/PL) | |
| 49. |
What is strain energy? |
| A. | The work done by the applied load In stretching the body |
| B. | The strain per unit volume |
| C. | The force applied in stretching the body |
| D. | The stress per unit are |
| Answer» B. The strain per unit volume | |
| 50. |
What is the relation between maximum stress induced due to sudden loading to maximum stress the gradual loading? |
| A. | Maximum stress in sudden load is equal to the maximum stress in gradual load |
| B. | Maximum stress in sudden load is half to the maximum stress in gradual load |
| C. | Maximum stress in sudden load is twice to the maximum stress in gradual load |
| D. | Maximum stress in sudden load is four times to the maximum stress in gradual load |
| Answer» D. Maximum stress in sudden load is four times to the maximum stress in gradual load | |