MCQOPTIONS
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MCQOPTIONS
This section includes 207 Mcqs, each offering curated multiple-choice questions to sharpen your Strength Materials knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Partial safety factor for concrete is taken as ____________ |
| A. | 1.3 |
| B. | 1.2 |
| C. | 1.5 |
| D. | 1.6 |
| Answer» D. 1.6 | |
| 152. |
The design compressive strength of concrete is ___________ times of characteristic compressive strength of concrete. |
| A. | 0.313 |
| B. | 0.253 |
| C. | 0.466 |
| D. | 0.411 |
| Answer» D. 0.411 | |
| 153. |
In cantilever beams, the steel bars are placed at ___________ |
| A. | Bottom of the beam |
| B. | Top of the Beam |
| C. | Midspan of the Beam |
| D. | Near supports |
| Answer» C. Midspan of the Beam | |
| 154. |
Calculate the level arm factor of a section of M20 grade and if Fe 415 Steel. [Take critical neutral axis factor as 0.289]. |
| A. | 0.78 |
| B. | 0.9 |
| C. | 0.58 |
| D. | 0.73 |
| Answer» C. 0.58 | |
| 155. |
Working stress method is based on elastic theory assumptions. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 156. |
A spring used to absorb shocks and vibrations is called as _______ |
| A. | Conical spring |
| B. | Leaf spring |
| C. | Disc spring |
| D. | Torsion spring |
| Answer» C. Disc spring | |
| 157. |
Calculate the maximum shear force for square beam of side is 320 mm. If the shear force is 94kN. |
| A. | 1.37N/mm² |
| B. | 2.36N/mm² |
| C. | 5.21N/mm² |
| D. | 4.32N/mm² |
| Answer» B. 2.36N/mm² | |
| 158. |
The ratio of creep strain to elastic strain is known as ___________ |
| A. | Creep factor |
| B. | Creep postulate |
| C. | Creep coefficient |
| D. | Creep variable |
| Answer» D. Creep variable | |
| 159. |
A simply supported beam of span 8 metres carries a udl of 16 kN/m at a point out of 60 kN acting at it’s centre. Calculate the maximum shear force. |
| A. | 87kN |
| B. | 45kN |
| C. | 78kN |
| D. | 94kN |
| Answer» E. | |
| 160. |
Poisson’s ratio for high strength concrete is __________ |
| A. | 0.049 |
| B. | 0.095 |
| C. | 0.1 |
| D. | 0.1111 |
| Answer» D. 0.1111 | |
| 161. |
The maximum shear stress in an I section is __________ |
| A. | F/8I ×[B/b (D²-d²)+d²] |
| B. | F/6I ×[B/b (D²-d²)+d²] |
| C. | F/8I ×[B/b (D³-d³)+d²] |
| D. | F/4I ×[B/b (D²-d²)+d²] |
| Answer» B. F/6I ×[B/b (D²-d²)+d²] | |
| 162. |
The minimum percentage elongation for mild steel is __________ |
| A. | 6% |
| B. | 13% |
| C. | 23% |
| D. | 34% |
| Answer» D. 34% | |
| 163. |
In steel sections, the junction between a flange and web is known as ________ |
| A. | Edge |
| B. | Fillet |
| C. | Corner |
| D. | Lug |
| Answer» C. Corner | |
| 164. |
The percentage of carbon in structural steel is __________ |
| A. | 0.2 – 0.27 % |
| B. | 0.6 – 0.85 % |
| C. | 0.7 – 1.23 % |
| D. | 1.23 – 1.45% |
| Answer» B. 0.6 – 0.85 % | |
| 165. |
GOST standards are used in _________ |
| A. | Italy |
| B. | Poland |
| C. | Russia |
| D. | Pakistan |
| Answer» D. Pakistan | |
| 166. |
Modulus of resilience is defined as __________ |
| A. | Resilience at ultimate stress |
| B. | Resilience per unit volume |
| C. | Resilience at proportional limit |
| D. | Resilience at elastic limit |
| Answer» C. Resilience at proportional limit | |
| 167. |
The allowable tensile stresses in steel structures is taken as 1500 kg /cm² to ______ |
| A. | 1765 kg /cm² |
| B. | 1900 kg /cm² |
| C. | 2125 kg /cm² |
| D. | 2455 kg/cm² |
| Answer» D. 2455 kg/cm² | |
| 168. |
As per IS:800, the minimum thickness of web should not be less than ______ |
| A. | d/250 |
| B. | d/300 |
| C. | d/350 |
| D. | d/125 |
| Answer» B. d/300 | |
| 169. |
The failing of a very long column is initially by ___________ |
| A. | Crushing |
| B. | Collapsing |
| C. | Buckling |
| D. | Twisting |
| Answer» D. Twisting | |
| 170. |
What is the allowable stress in cast iron? |
| A. | 3200 N/mm² |
| B. | 2400 N/mm² |
| C. | 3400 N/mm² |
| D. | 5500 N/mm² |
| Answer» E. | |
| 171. |
Modular ratio method is also known as ______ |
| A. | Ultimate stress method |
| B. | Limit state method |
| C. | Working stress method |
| D. | Stress and strain method |
| Answer» D. Stress and strain method | |
| 172. |
The stress corresponding to ______ of strain in the stress-strain curve of mild steel is known as proof stress. |
| A. | 0.2% |
| B. | 0.32% |
| C. | 0.5% |
| D. | 0.6% |
| Answer» B. 0.32% | |
| 173. |
The compressive strength of brittle materials is ______ its tensile strength. |
| A. | Less than |
| B. | Greater than |
| C. | Equal to |
| D. | Depends on material |
| Answer» C. Equal to | |
| 174. |
__________ is the device used for measuring normal stresses on the surface of a stressed object. |
| A. | Nephelometer |
| B. | Straining appurtenances |
| C. | Resistance strain gauge |
| D. | Volt-Hypsometer gauge |
| Answer» D. Volt-Hypsometer gauge | |
| 175. |
The breaking stress is _______ the ultimate stress. |
| A. | Less than |
| B. | Greater than |
| C. | Depends on time |
| D. | Equal to |
| Answer» B. Greater than | |
| 176. |
The modular ratio for M20 grade concrete is _____________ |
| A. | 16 |
| B. | 13 |
| C. | 11 |
| D. | 07 |
| Answer» C. 11 | |
| 177. |
In doubly reinforced beam, the maximum shear stress occurs ______________ |
| A. | along the centroid |
| B. | along the neutral axis |
| C. | on the planes between neutral axis and tensile reinforcement |
| D. | on the planes between neutral axis and compressive reinforcement |
| Answer» E. | |
| 178. |
A cylindrical section having no joint is known as _______________ |
| A. | Proof section |
| B. | Seamless section |
| C. | Target section |
| D. | Mown section |
| Answer» C. Target section | |
| 179. |
The maximum shear stress distribution is _____________ percentage more than average shear stress in circular section. |
| A. | 54 % |
| B. | 60 % |
| C. | 33 % |
| D. | 50 % |
| Answer» D. 50 % | |
| 180. |
Calculate the modulus of section for a hollow circular column of external diameter 60 mm and 10 mm thickness. |
| A. | 170 m |
| B. | 190 m |
| C. | 250 m |
| D. | 300 m |
| Answer» B. 190 m | |
| 181. |
The efficiency of cylindrical section is the ratio of the strength of joint to the strength of _______________ |
| A. | Solid plate |
| B. | Boilerplate |
| C. | Circumferential plate |
| D. | Longitudinal plate |
| Answer» B. Boilerplate | |
| 182. |
A steel beam is 200 mm wide and 300 mm deep. The beam is simply supported and carries a concentrated load w. If the maximum stress are 2 N/mm². What will be the corresponding load? |
| A. | 50 kN |
| B. | 80 kN |
| C. | 40 kN |
| D. | 85 kN |
| Answer» C. 40 kN | |
| 183. |
Maximum shear stress in thin cylindrical shell be ___________ |
| A. | pr/2t |
| B. | pr/3t |
| C. | pr/4t |
| D. | pr/ 5t |
| Answer» D. pr/ 5t | |
| 184. |
Circumferential stress is same as of _________ |
| A. | Hoop stress |
| B. | Longitudinal stress |
| C. | Transverse stress |
| D. | Phreatic stress |
| Answer» B. Longitudinal stress | |
| 185. |
A beam has a triangular cross-section, having altitude ”h” and base “b”. If the section is being subjected to a shear force “F”. Calculate the shear stress at the level of neutral axis in the cross section. |
| A. | 4F/5bh |
| B. | 4F/3bh |
| C. | 8F/3bh |
| D. | 3F/4bh |
| Answer» D. 3F/4bh | |
| 186. |
The maximum shear stress in the rectangular section is ______________ times the average shear stress. |
| A. | 3/4 |
| B. | 3/7 |
| C. | 5/3 |
| D. | 3/2 |
| Answer» E. | |
| 187. |
Shear stress at top most fibre of rectangular section is _____________ |
| A. | Maximum |
| B. | Minimum |
| C. | Zero |
| D. | Uniform through out |
| Answer» D. Uniform through out | |
| 188. |
A round Steel rod of 100 mm diameter is bent into an arc of radius 100m. What is the maximum stress in the rod? Take E = 2×10⁵ N/mm². |
| A. | 150 N/mm² |
| B. | 200 N/mm² |
| C. | 100 N/mm² |
| D. | 300 N/mm² |
| Answer» D. 300 N/mm² | |
| 189. |
1 GPA = ____________ pa. |
| A. | 10⁵ |
| B. | 10⁶ |
| C. | 10⁸ |
| D. | 10⁹ |
| Answer» E. | |
| 190. |
Determine the modulus of a section for an I section, given the distance from neutral axis is 50 mm and moment of inertia is 2.8×10⁶ mm⁴. |
| A. | 59m |
| B. | 51m |
| C. | 58m |
| D. | 63m |
| Answer» D. 63m | |
| 191. |
A circular Beam of 0.25 m diameter is subjected to you shear force of 10 kN. Calculate the value of maximum shear stress. [Take area = 176 m²]. |
| A. | 0.75 N/mm² |
| B. | 0.58 N/mm² |
| C. | 0.73 N/mm² |
| D. | 0.65 N/mm² |
| Answer» B. 0.58 N/mm² | |
| 192. |
The maximum shear stress is ______ times the average shear stress [For rectangular beams]. |
| A. | 2.5 |
| B. | 3 |
| C. | 1.2 |
| D. | 1.5 |
| Answer» E. | |
| 193. |
Shear stress in a beam is zero at ______ |
| A. | Neutral axis |
| B. | Extreme fibres |
| C. | Cross section |
| D. | Junctions |
| Answer» C. Cross section | |
| 194. |
Shear stress distribution over rectangular section will be _________ |
| A. | parabolic |
| B. | elliptical |
| C. | triangular |
| D. | trapezoidal |
| Answer» B. elliptical | |
| 195. |
For circular section, the maximum shear stress is equal to ____________ times of average shear stress. |
| A. | 2/3 |
| B. | 3/2 |
| C. | 4/3 |
| D. | 3/4 |
| Answer» D. 3/4 | |
| 196. |
At ________ the shearing stress in a beam are maximum. |
| A. | Extreme fibres |
| B. | Modulus of section |
| C. | Neutral axis |
| D. | Along the cross-sectional area |
| Answer» D. Along the cross-sectional area | |
| 197. |
Determine the shear stress at the level of neutral axis, if a beam has a triangle cross section having base “b” and altitude “h”. Let the shear force be subjected is F. |
| A. | 3F/8bh |
| B. | 4F/3bh |
| C. | 8F/3bh |
| D. | 3F/6bh |
| Answer» D. 3F/6bh | |
| 198. |
Find the moment of inertia about centroid axis of a triangular section are having base 100 mm and height 150 mm. |
| A. | 9.21×10⁶ mm⁴ |
| B. | 9.45×10⁶ mm⁴ |
| C. | 9.37×10⁶ mm⁴ |
| D. | 8.51×10⁶ mm⁴ |
| Answer» D. 8.51×10⁶ mm⁴ | |
| 199. |
Find the modulus of section of square beam of size 150 × 150 mm? |
| A. | 654.5 m³ |
| B. | 550.85 m³ |
| C. | 562.5 m³ |
| D. | 586.9 m³ |
| Answer» D. 586.9 m³ | |
| 200. |
A rectangular beam of 500 mm wide is subjected to maximum shear force of 250kN, the corresponding maximum shear stress been 3 N/mm². The depth of the beam is equal to ______ |
| A. | 200mm |
| B. | 250mm |
| C. | 300mm |
| D. | 350mm |
| Answer» C. 300mm | |