MCQOPTIONS
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MCQOPTIONS
This section includes 244 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be three times the maximum tensile stress, centre of gravity of the section from flange side is |
| A. | h/4 |
| B. | h/3 |
| C. | h/2 |
| D. | 2/3 h |
| Answer» B. h/3 | |
| 152. |
Influence lines are drawn for structures |
| A. | Of any type |
| B. | Statically determinate |
| C. | Pin-jointed truss |
| D. | None of these |
| Answer» B. Statically determinate | |
| 153. |
Which of the following is not a scalar quantity? |
| A. | Time |
| B. | Mass |
| C. | Volume |
| D. | Acceleration |
| Answer» E. | |
| 154. |
The slenderness ratio of a vertical column of a square cross-section of 2.5 cm sides and 300 cm length, is |
| A. | 200 |
| B. | 240 |
| C. | 360 |
| D. | 416 |
| Answer» E. | |
| 155. |
Forces are called coplanar when all of them acting on body lie in |
| A. | One point |
| B. | One plane |
| C. | Different planes |
| D. | Perpendicular planes |
| Answer» C. Different planes | |
| 156. |
The property by which a body returns to its original shape after removal of the force, is called |
| A. | Plasticity |
| B. | Elasticity |
| C. | Ductility |
| D. | Malleability |
| Answer» C. Ductility | |
| 157. |
In the lever of third order, load W, effort P and fulcrum F are oriented as follows |
| A. | W between P and F |
| B. | F between W and P |
| C. | P between W and F |
| D. | W, P and F all on one side |
| Answer» B. F between W and P | |
| 158. |
A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the coil is |
| A. | WR3n/Cr4 |
| B. | 2WR3n/Cr4 |
| C. | 3WR3n/Cr4 |
| D. | 4WR3n/Cr4 |
| Answer» E. | |
| 159. |
The property of a material by which it can be beaten or rolled into thin plates, is called |
| A. | Malleability |
| B. | Ductility |
| C. | Plasticity |
| D. | Elasticity |
| Answer» B. Ductility | |
| 160. |
Dynamic friction as compared to static friction is |
| A. | Same |
| B. | More |
| C. | Less |
| D. | May be less of more depending on nature of surfaces and velocity |
| Answer» D. May be less of more depending on nature of surfaces and velocity | |
| 161. |
Pick up the correct assumption of the theory of simple bending |
| A. | The value of the Youngs modulus is the same in tension as well as in compression |
| B. | Transverse section of a beam remains plane before and after bending |
| C. | The material of the beam is homogeneous and isotropic |
| D. | All the above |
| Answer» E. | |
| 162. |
In rectangular columns (cross-section b × h), the core is a |
| A. | Rectangle of lengths b/2 and h/2 |
| B. | Square of length b/2 |
| C. | Rhombus of length h/2 |
| D. | Rhombus of diagonals b/3 and h/3 |
| Answer» E. | |
| 163. |
A cantilever beam rectangular in cross-section is subjected to an isolated load at its free end. If the width of the beam is doubled, the deflection of the free end will be changed in the ratio of |
| A. | 8 |
| B. | 1/8 |
| C. | 1/2 |
| D. | 3 |
| Answer» D. 3 | |
| 164. |
The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be |
| A. | 20 kg, -ve sense |
| B. | 20 kg, +ve sense |
| C. | 10 kg, +ve sense |
| D. | 10 kg, -ve sense |
| Answer» B. 20 kg, +ve sense | |
| 165. |
A diagram which shows the variations of the axial load for all sections of the span of a beam, is called |
| A. | Bending moment diagram |
| B. | Shear force diagram |
| C. | Thrust diagram |
| D. | Stress diagram |
| Answer» D. Stress diagram | |
| 166. |
Center of gravity of a solid cone lies on the axis at the height |
| A. | One-fourth of the total height above base |
| B. | One-third of the total height above base |
| C. | One-half of the total height above base |
| D. | Three-eighth of the total height above the base |
| Answer» B. One-third of the total height above base | |
| 167. |
In a shaft shear stress intensity at a point is not |
| A. | Directly proportional to the distance from the axis |
| B. | Inversely proportional to the distance from the axis |
| C. | Inversely proportional to the polar moment of inertia |
| D. | Directly proportional to the applied torque |
| Answer» C. Inversely proportional to the polar moment of inertia | |
| 168. |
At either end of a plane frame, maximum number of possible bending moments, are |
| A. | Zero |
| B. | One |
| C. | Two |
| D. | Three |
| Answer» B. One | |
| 169. |
The ratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire length, is |
| A. | 3/2 |
| B. | 15/24 |
| C. | 24/15 |
| D. | 2/3 |
| Answer» D. 2/3 | |
| 170. |
Forces are called concurrent when their lines of action meet in |
| A. | One point |
| B. | Two points |
| C. | Plane |
| D. | Perpendicular planes |
| Answer» B. Two points | |
| 171. |
Shear deflection of a cantilever of length L, cross sectional area A and shear modulus G, under a concentrated load W at its free end, is |
| A. | (2/3) (WL/AG) |
| B. | (1/3) (WL²/EIA) |
| C. | (3/2) (WL/AG) |
| D. | (3/2) (WL²/AG) |
| Answer» D. (3/2) (WL²/AG) | |
| 172. |
If two forces acting at a joint are not along the straight line, then for the equilibrium of the joint |
| A. | One of the forces must be zero |
| B. | Each force must be zero |
| C. | Forces must be equal and of the same sign |
| D. | Forces must be equal in magnitude but opposite in sign |
| Answer» C. Forces must be equal and of the same sign | |
| 173. |
In actual machines |
| A. | Mechanical advantage is greater than velocity ratio |
| B. | Mechanical advantage is equal to velocity ratio |
| C. | Mechanical advantage is less than velocity ratio |
| D. | Mechanical advantage is unity |
| Answer» D. Mechanical advantage is unity | |
| 174. |
In a loaded beam, the point of contraflexure occurs at a section where |
| A. | Bending moment is minimum |
| B. | Bending moment is zero or changes sign |
| C. | Bending moment is maximum |
| D. | Shearing force is maximum |
| Answer» C. Bending moment is maximum | |
| 175. |
For keeping the stress wholly compressive the load may be applied on a circular column anywhere within a concentric circle of diameter |
| A. | d/2 |
| B. | d/3 |
| C. | d/4 |
| D. | d/8 |
| Answer» D. d/8 | |
| 176. |
The type of butt joints in common use, is: |
| A. | Single inverted V-butt joint |
| B. | Double V-butt joint |
| C. | Double U-butt joint |
| D. | Single V-butt joint |
| Answer» B. Double V-butt joint | |
| 177. |
Tangent of angle of friction is equal to |
| A. | Kinetic friction |
| B. | Limiting friction |
| C. | Angle of repose |
| D. | Coefficient of friction |
| Answer» E. | |
| 178. |
In the equation of virtual work, following force is neglected |
| A. | Reaction of any smooth surface with which the body is in contact |
| B. | Reaction of a rough surface of a body which rolls on it without slipping |
| C. | Reaction at a point or an axis, fixed in space, around which a body is constrained to turn |
| D. | All of the above |
| Answer» E. | |
| 179. |
A joint of a frame is subjected to three tensile forces P, Q and R equally inclined to each other. If P is 10 tonnes, the other forces will be |
| A. | Q = 10 tonnes and R = zero |
| B. | R + 10 tonnes and Q = zero |
| C. | Q + R = 10 tonnes |
| D. | Q and R each is equal to 10 tonnes |
| Answer» E. | |
| 180. |
When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called |
| A. | Shear stress |
| B. | Compressive stress |
| C. | Tensile stress |
| D. | Transverse stress |
| Answer» D. Transverse stress | |
| 181. |
A framed structure is perfect if it contains members equal to |
| A. | 2n 3 |
| B. | nl |
| C. | 2nl |
| D. | 3n² |
| Answer» B. nl | |
| 182. |
During a tensile test on a ductile material |
| A. | Nominal stress at fracture is higher than the ultimate stress |
| B. | True stress at fracture is higher than the ultimate stress |
| C. | True stress at fracture is the same as the ultimate stress |
| D. | None of these |
| Answer» C. True stress at fracture is the same as the ultimate stress | |
| 183. |
The maximum resistance against rotation, is offered by the weld at a point |
| A. | Most distant |
| B. | Least distant |
| C. | At either end |
| D. | Centrally located |
| Answer» B. Least distant | |
| 184. |
Which of the following is not the unit of pressure? |
| A. | kg/cm |
| B. | atm |
| C. | kg/cm² |
| D. | Newton |
| Answer» E. | |
| 185. |
The maximum bending moment due to a moving load on a simply supported beam, occurs |
| A. | At the mid span |
| B. | At the supports |
| C. | Under the load |
| D. | Anywhere on the beam |
| Answer» D. Anywhere on the beam | |
| 186. |
The unit of power in S.I. units is |
| A. | Newton meter |
| B. | Watt |
| C. | Joule |
| D. | Kilogram meter/sec |
| Answer» C. Joule | |
| 187. |
The maximum stress intensity due to a suddenly applied load is x-times the stress intensity produced by the load of the same magnitude applied gradually. The value of x is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 1/2 |
| Answer» C. 3 | |
| 188. |
When loads are applied proportionately to a frame structure containing its members in one plane, the structure is called |
| A. | Grid frame |
| B. | Plane frame |
| C. | Space frame |
| D. | Truss frame |
| Answer» D. Truss frame | |
| 189. |
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of |
| A. | Friction |
| B. | Limiting friction |
| C. | Repose |
| D. | Kinematic friction |
| Answer» D. Kinematic friction | |
| 190. |
The ratio of the moments of resistance of a solid circular shaft of diameter D and a hollow shaft (external diameter D and internal diameter d), is |
| A. | D 4 /(D 4 - d 4 ) |
| B. | D 3 /(D 3 - d 3 ) |
| C. | (D 4 - d 4 )/D 4 |
| D. | (D 3 - d 3 )/D 3 |
| Answer» B. D 3 /(D 3 - d 3 ) | |
| 191. |
The intensity of direct longitudinal stress in the cross-section at any point distant r from the neutral axis, is proportional to |
| A. | r |
| B. | 1/r |
| C. | r2 |
| D. | 1/r² |
| Answer» B. 1/r | |
| 192. |
The coefficient of friction depends on |
| A. | Area of contact |
| B. | Shape of surfaces |
| C. | Strength of surfaces |
| D. | Nature of surface |
| Answer» E. | |
| 193. |
A rectangular bar of width b and height h is being used as a cantilever. The loading is in a plane parallel to the side b. The section modulus is |
| A. | bh3 /12 |
| B. | bh²/6 |
| C. | b²h/6 |
| D. | None of these |
| Answer» D. None of these | |
| 194. |
Which of the following is not a vector quantity? |
| A. | Weight |
| B. | Velocity |
| C. | Acceleration |
| D. | Force |
| Answer» B. Velocity | |
| 195. |
The value of Poisson's ratio always remains |
| A. | Greater than one |
| B. | Less than one |
| C. | Equal to one |
| D. | None of these |
| Answer» C. Equal to one | |
| 196. |
In a bar of large length when held vertically and subjected to a load at its lower end, its ownweight produces additional stress. The maximum stress will be |
| A. | At the lower cross-section |
| B. | At the built-in upper cross-section |
| C. | At the central cross-section |
| D. | At every point of the bar |
| Answer» C. At the central cross-section | |
| 197. |
Shear deflection of a cantilever of length L, cross sectional area A and shear modulus G, subjected to w/m u.d.l., is |
| A. | (3/4) (L²w/GA) |
| B. | (3/2) (L²w/GA) |
| C. | (2/3) (L3w/GA) |
| D. | (3/2) (Lw/GA²) |
| Answer» B. (3/2) (L²w/GA) | |
| 198. |
The shear force on a simply supported beam is proportional to |
| A. | Displacement of the neutral axis |
| B. | Sum of the forces |
| C. | Sum of the transverse forces |
| D. | Algebraic sum of the transverse forces of the section |
| Answer» E. | |
| 199. |
A beam of length L supported on two intermediate rollers carries a uniformly distributed load on its entire length. If sagging B.M. and hogging B.M. of the beam are equal, the length of each overhang, is |
| A. | 0.107 L |
| B. | 0.207 L |
| C. | 0.307 L |
| D. | 0.407 L |
| Answer» C. 0.307 L | |
| 200. |
A pair of smith's tongs is an example of the lever of |
| A. | Zeroth order |
| B. | First order |
| C. | Second order |
| D. | Third order |
| Answer» D. Third order | |