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.
| 51. |
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 elongation in the vertical bar if E = 200GPa? |
| A. | 0.245mm |
| B. | 0.324mm |
| C. | 0.452mm |
| D. | 0.623mm |
| Answer» D. 0.623mm | |
| 52. |
A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm. What will be the stress in bar? |
| A. | 100 N/mm² |
| B. | 120 N/mm² |
| C. | 125 N/mm² |
| D. | 150 N/mm² |
| Answer» D. 150 N/mm² | |
| 53. |
Resilience of a material plays important role in which of the following? |
| A. | Thermal stress |
| B. | Shock loading |
| C. | Fatigue |
| D. | Pure static loading |
| Answer» C. Fatigue | |
| 54. |
The strain energy stored in a specimen when stained within the elastic limit is known as __________ |
| A. | Resilience |
| B. | Plasticity |
| C. | Malleability |
| D. | Stain energy |
| Answer» B. Plasticity | |
| 55. |
The strain energy in a member is proportional to __________ |
| A. | Product of stress and the strain |
| B. | Total strain multiplied by the volume of the member |
| C. | The maximum strain multiplied by the length of the member |
| D. | Product of strain and Young’s modulus of the material |
| Answer» E. | |
| 56. |
A tensile load of 50kN is gradually applied to a circular bar of 5cm diameter and 5m long. What is the strain energy absorbed by the rod (E = 200GPa)? |
| A. | 14 N-m |
| B. | 15.9 N-mm |
| C. | 15.9 N-m |
| D. | 14 N-mm |
| Answer» D. 14 N-mm | |
| 57. |
A bar of cross-section A and length L is subjected to an axial load W. the strain energy stored in the bar would be __________ |
| A. | WL / AE |
| B. | W²L / 4AE |
| C. | W²L / 2AE |
| D. | WL / 4AE |
| Answer» D. WL / 4AE | |
| 58. |
A tensile load of 60kN is gradually applied to a circular bar of 4cm diameter and 5m long. What is the stretch in the rod if E = 2×10⁵ N/mm²? |
| A. | 1.1mm |
| B. | 1.24mm |
| C. | 2mm |
| D. | 1.19mm |
| Answer» E. | |
| 59. |
A material of youngs modulus and Poissons ratio of unity is subjected to two principal stresses σ₁ and σ₂ at a point in two dimensional stress system. The strain energy per unit volume of the material is __________ |
| A. | (σ₁² + σ₂² – 2σ₁σ₂ ) / 2E |
| B. | (σ₁² + σ₂² + 2σ₁σ₂ ) / 2E |
| C. | (σ₁² - σ₂² – 2σ₁σ₂ ) / 2E |
| D. | (σ₁² - σ₂² + 2σ₁σ₂) / 2E |
| Answer» B. (σ₁² + σ₂² + 2σ₁σ₂ ) / 2E | |
| 60. |
If forces P, P and P of a system are such that the force polygon does not close, then the system will __________ |
| A. | Be in equilibrium |
| B. | Reduce to a resultant force |
| C. | Reduce to a couple |
| D. | Not be in equilibrium |
| Answer» E. | |
| 61. |
A rectangular block of size 400mm x 50mm x 50mm is subjected to a shear stress of 500kg/cm². If the modulus of rigidity of the material is 1×10⁶ kg/cm², the strain energy will be __________ |
| A. | 125 kg-cm |
| B. | 1000 kg-cm |
| C. | 500 kg-cm |
| D. | 100 kg-cm |
| Answer» B. 1000 kg-cm | |
| 62. |
In a material of pure shear stress τthe strain energy stored per unit volume in the elastic, homogeneous isotropic material having elastic constants E and v will be: |
| A. | τ²/E x (1+ v) |
| B. | τ²/E x (1+ v) |
| C. | τ²/2E x (1+ v) |
| D. | τ²/E x (2+ v) |
| Answer» D. τ²/E x (2+ v) | |
| 63. |
What is the strain energy stored in a body due to gradually applied load? |
| A. | σE/V |
| B. | σE²/V |
| C. | σV²/E |
| D. | σV²/2E |
| Answer» E. | |
| 64. |
Strain energy stored in a body to uniform stress s of volume V and modulus of elasticity E is __________ |
| A. | s²V/2E |
| B. | sV/E |
| C. | sV²/E |
| D. | sV/2E |
| Answer» B. sV/E | |
| 65. |
PL³/3EI is the deflection under the load P of a cantilever beam. What will be the strain energy? |
| A. | P²L³/3EI |
| B. | P²L³/6EI |
| C. | P²L³/4EI |
| D. | P²L³/24EI |
| Answer» C. P²L³/4EI | |
| 66. |
WHAT_IS_THE_PAINTING_COEFFICIENT_FOR_FLUSH_DOORS??$ |
| A. | 2.3 |
| B. | 2.4 |
| C. | 3.4 |
| D. | 3.6 |
| Answer» C. 3.4 | |
| 67. |
Which of the following estimates is also known as preliminary estimate?$ |
| A. | Detailed estimate |
| B. | Scientific estimate |
| C. | Approximate estimate |
| D. | Abstract estimate |
| Answer» D. Abstract estimate | |
| 68. |
Which_of_the_following_rules_is_known_as_“Prismoidal_Rule”?$# |
| A. | Mean sectional rule |
| B. | Trapezoidal rule |
| C. | Simpson’s rule |
| D. | Mid sectional rule |
| Answer» D. Mid sectional rule | |
| 69. |
Calculate the instantaneous elongation if a steel rod of 40 mm and 4 m long subjected to an axial pull of 80 kN. Take E = 2√ó105 N/mm2.$ |
| A. | 1.23 mm |
| B. | 1.27 mm |
| C. | 1.31 mm |
| D. | 1.43 mm |
| Answer» C. 1.31 mm | |
| 70. |
Which of the following is a exact estimate? |
| A. | Abstract |
| B. | Detailed |
| C. | Rough |
| D. | Preliminary |
| Answer» C. Rough | |
| 71. |
By ____ estimate, technical sanction is obtained. |
| A. | Approximate |
| B. | Detailed |
| C. | Abstract |
| D. | Preliminary |
| Answer» C. Abstract | |
| 72. |
Service_unit_method_is_related_to______estimate. |
| A. | Abstract |
| B. | Approximate |
| C. | Detailed |
| D. | Cubic content |
| Answer» C. Detailed | |
| 73. |
In foundation concrete coarse aggregate size should be __? |
| A. | 20 mm |
| B. | 30 mm |
| C. | 40 mm |
| D. | 50 mm |
| Answer» D. 50 mm | |
| 74. |
_______ gives the nature and class of work. |
| A. | Estimate |
| B. | Specifications |
| C. | Tenders |
| D. | Survey |
| Answer» C. Tenders | |
| 75. |
Centre line method is accurate method? |
| A. | False |
| B. | True |
| Answer» C. | |
| 76. |
Which of the following methods is also known as individual wall method? |
| A. | Centre line method |
| B. | Alignment method |
| C. | Long wall and short wall method |
| D. | Voluminous method |
| Answer» D. Voluminous method | |
| 77. |
What are the units of measurement for wooden and steel trusses? |
| A. | 1 RM |
| B. | 1 N.o |
| C. | m<sup>2</sup> |
| D. | m |
| Answer» C. m<sup>2</sup> | |
| 78. |
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√ó105 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 | |
| 79. |
Mathematically, strain energy = ______ |
| A. | Power |
| B. | Work done |
| C. | Young’s Modulus |
| D. | Energy |
| Answer» C. Young‚Äö√Ñ√∂‚àö√ë‚àö¬•s Modulus | |
| 80. |
Resilience can also be termed as ___ |
| A. | Stress energy |
| B. | Strain energy |
| C. | Modulus |
| D. | Tenacity |
| Answer» C. Modulus | |