MCQOPTIONS
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MCQOPTIONS
This section includes 374 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. |
The velocity ratio of an inclined plane of inclination ‘θ’ with horizontal for lifting a load is |
| A. | sin θ |
| B. | cos θ |
| C. | tan θ |
| D. | cosec θ |
| Answer» E. | |
| 152. |
In a simple harmonic motion, the position of equilibrium is always |
| A. | Stable |
| B. | Unstable |
| C. | Neutral |
| D. | None of the above |
| Answer» B. Unstable | |
| 153. |
A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is |
| A. | 17° 48' |
| B. | 18° 48' |
| C. | 19° 48' |
| D. | 20° 48' |
| Answer» D. 20° 48' | |
| 154. |
Joule is the unit of |
| A. | Power |
| B. | Impulse |
| C. | Work |
| D. | Momentum |
| Answer» D. Momentum | |
| 155. |
Newton’s Law of Motion is: |
| A. | Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force |
| B. | The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts |
| C. | To every action, there is always an equal and opposite reaction |
| D. | All the above |
| Answer» E. | |
| 156. |
The point about which combined motion of rotation and translation of a rigid body takes place, is known as |
| A. | Virtual centre |
| B. | Instantaneous centre |
| C. | Instantaneous axis |
| D. | Point of rotation |
| Answer» C. Instantaneous axis | |
| 157. |
The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is |
| A. | b³h/12 |
| B. | bh³/3 |
| C. | bh³/36 |
| D. | bh³/2 |
| Answer» D. bh³/2 | |
| 158. |
For the system of the loads shown in bellow figure, the time required for the 6.6 kg load to fall on the edge, is |
| A. | 1 sec |
| B. | 2 sec |
| C. | 3 sec |
| D. | 4 sec |
| Answer» D. 4 sec | |
| 159. |
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is |
| A. | 0.25 |
| B. | 0.33 |
| C. | 0.40 |
| D. | 0.50 |
| Answer» E. | |
| 160. |
A particle is dropped from a height of 3 m on a horizontal floor, which has a coefficient of restitution with the ball of 1/2. The height to which the ball will rebound after striking the floor is |
| A. | 0.5 m |
| B. | 0.75 m |
| C. | 1.0 m |
| D. | 1.5 m |
| Answer» C. 1.0 m | |
| 161. |
A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is |
| A. | 4.5 J |
| B. | 9.0 J |
| C. | 12.0 J |
| D. | 18.0 J |
| Answer» C. 12.0 J | |
| 162. |
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called |
| A. | Virtual work |
| B. | Imaginary work |
| C. | Zero work |
| D. | Negative work |
| Answer» E. | |
| 163. |
For maximum range of a projectile, the angle of projection should be |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | None of these |
| Answer» C. 60° | |
| 164. |
Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is |
| A. | 9.3 m/sec |
| B. | 8.3 m/sec |
| C. | 7.3 m/sec |
| D. | 6.3 m/sec |
| Answer» B. 8.3 m/sec | |
| 165. |
If the velocity of projection is 4 m/sec and the angle of projection is α°, the maximum height of the projectile from a horizontal plane, is |
| A. | u² cos² α/2g |
| B. | u² sin² α/2g |
| C. | u² tan² α/2g |
| D. | u² sin 2α/2g |
| Answer» C. u² tan² α/2g | |
| 166. |
Time of flight of a projectile on a horizontal plane, is |
| A. | 2u sinα/g |
| B. | 2u cosα/g |
| C. | 2u tanα/g |
| D. | 2u cotα/g |
| Answer» B. 2u cosα/g | |
| 167. |
When a body moves round a fixed axis, it has |
| A. | A rotary motion |
| B. | A circular motion |
| C. | A translatory |
| D. | A rotary motion and translatory motion |
| Answer» C. A translatory | |
| 168. |
If ‘l’ is the span of a light suspension bridge who’s each cable carries total weight (w) and the central dip is ‘y’, the horizontal pull at each support, is |
| A. | wl/4y |
| B. | wl/8y |
| C. | wl/2y |
| D. | wl |
| Answer» C. wl/2y | |
| 169. |
The following statement is one of the laws of Dynamic friction |
| A. | The force of friction always acts in a direction opposite to that in which a body is moving |
| B. | The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction |
| C. | For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed |
| D. | All the above |
| Answer» E. | |
| 170. |
Effect of a force on a body depends upon its |
| A. | Direction |
| B. | Magnitude |
| C. | Position |
| D. | All the above |
| Answer» E. | |
| 171. |
The dimensions of Gravitational Universal constant ‘G’ are |
| A. | M-1L2r2 |
| B. | M-1L3r2 |
| C. | M-2L3T2 |
| D. | M1L3T2 |
| Answer» C. M-2L3T2 | |
| 172. |
The motion of a bicycle wheel is |
| A. | Translatory |
| B. | Rotary |
| C. | Rotary and translatory |
| D. | Curvilinear |
| Answer» D. Curvilinear | |
| 173. |
The resolved part of the resultant of two forces inclined at an angle θ in a given direction is |
| A. | Algebraic sum of the resolved parts of the forces in the direction |
| B. | Arithmetical sum of the resolved parts of the forces in the direction |
| C. | Difference of the forces multiplied by cosine θ° |
| D. | Sum of the forces multiplied by the tangent θ° |
| Answer» B. Arithmetical sum of the resolved parts of the forces in the direction | |
| 174. |
The necessary condition of equilibrium of a body is: |
| A. | Algebraic sum of horizontal components of all the forces must be zero |
| B. | Algebraic sum of vertical components of all the forces must be zero |
| C. | Algebraic sum of the moments of the forces about a point must be zero |
| D. | All (A), (B) and (C) |
| Answer» E. | |
| 175. |
A quantity measured in the C.G.S system of units has dimensions M”2L3 T3/2. What numerical factor would be required to convert the quantity to SI units ? |
| A. | 1 |
| B. | 100 |
| C. | 1/100 |
| D. | 1/10000 |
| Answer» B. 100 | |
| 176. |
Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation |
| A. | Is directly proportional to their velocity of approach |
| B. | Is inversely proportional to their velocity of approach |
| C. | Bears a constant ratio to their velocity of approach |
| D. | Is equal to the sum of their velocities of approach |
| Answer» D. Is equal to the sum of their velocities of approach | |
| 177. |
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by |
| A. | 1 : 2 |
| B. | 1 : 1 |
| C. | 2 : 1 |
| D. | 3 : 1 |
| Answer» E. | |
| 178. |
A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at 3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is |
| A. | 0.5 m/sec |
| B. | 1.0 m/sec |
| C. | 1.5 m/sec |
| D. | 2.5 m/sec |
| Answer» C. 1.5 m/sec | |
| 179. |
Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis? |
| A. | Disc with larger density |
| B. | Disc with smaller density |
| C. | Both discs will have same rotational inertia |
| D. | None of the above |
| Answer» C. Both discs will have same rotational inertia | |
| 180. |
The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of |
| A. | 8.04 km/sec at a height of 285 km |
| B. | 11.11 km/sec at a height of 37,400 km |
| C. | 11.26 km/sec, the satellite escapes the pull of the earth |
| D. | All the above |
| Answer» E. | |
| 181. |
The unit of impulse, is |
| A. | kg.m/sec |
| B. | kg.m/sec |
| C. | kg.m/sec² |
| D. | kg.m/sec |
| Answer» B. kg.m/sec | |
| 182. |
From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The C.G. of the remainder is at a height of |
| A. | 4.5 cm |
| B. | 5.0 cm |
| C. | 5.25 cm |
| D. | 5.5 cm |
| Answer» C. 5.25 cm | |
| 183. |
Force polygon method is applicable for |
| A. | Any coplanar force system |
| B. | A system of parallel forces only |
| C. | Concurrent coplanar force system |
| D. | Non-concurrent coplanar force system |
| Answer» D. Non-concurrent coplanar force system | |
| 184. |
If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along |
| A. | The same line in the same sense |
| B. | The same line in opposite sense |
| C. | The perpendicular to both the lines |
| D. | None of these |
| Answer» C. The perpendicular to both the lines | |
| 185. |
A rope is wrapped twice around a rough pole with a coefficient of friction ‘A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is |
| A. | 1 |
| B. | e2* |
| C. | e4* |
| D. | e*72 |
| Answer» C. e4* | |
| 186. |
The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is |
| A. | wl/4d |
| B. | wl²/4d |
| C. | wl²/8d |
| D. | wl²/16d |
| Answer» D. wl²/16d | |
| 187. |
A particle moves in a straight line and its position is defined by the equation x = 6 t² - t3 where t is expressed in seconds and ‘x’ in meters. The maximum velocity during the motion is |
| A. | 6 m/sec |
| B. | 12 m/sec |
| C. | 24 m/sec |
| D. | 48 m/sec |
| Answer» C. 24 m/sec | |
| 188. |
The acceleration of a train starting from rest at any instant is 1/6(V + 1) m/sec² where ‘V’ is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of |
| A. | 2000 m |
| B. | 2100 m |
| C. | 2200 m |
| D. | 2300 m |
| Answer» E. | |
| 189. |
Total no of instantaneous centers of a machine having ‘n’ links, is |
| A. | n/2 |
| B. | n |
| C. | (n - 1) |
| D. | n (n - 1)/2 |
| Answer» E. | |
| 190. |
Williot-Mohr diagram is used to determine deflection in |
| A. | Trusses only |
| B. | Beam only |
| C. | Rigid frames only |
| D. | Any type of structure |
| Answer» B. Beam only | |
| 191. |
If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is |
| A. | Zero |
| B. | Maximum |
| C. | Minimum |
| D. | None of these |
| Answer» C. Minimum | |
| 192. |
Two loads of 50 kg and 75 kg are hung at the ends of a rope passing over a smooth pulley shown in below figure. The tension in the string is: |
| A. | 50 kg |
| B. | 75 kg |
| C. | 25 kg |
| D. | 60 kg |
| Answer» E. | |
| 193. |
A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is, |
| A. | 5 N |
| B. | 10 N |
| C. | 15 N |
| D. | 25 N |
| Answer» E. | |
| 194. |
A weight ‘W’ is suspended at the free end of a light member hinged to a vertical wall. If the angle of inclination of the member with the upper wall is θ°, the force introduced in the member, is |
| A. | W sec θ |
| B. | W cos θ |
| C. | W sin θ |
| D. | W cosec θ |
| Answer» B. W cos θ | |
| 195. |
A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is |
| A. | 70 m/sec |
| B. | 75 m/sec |
| C. | 80 m/sec |
| D. | 90 m/sec |
| Answer» E. | |
| 196. |
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is |
| A. | 50 % |
| B. | 40 % |
| C. | 55 % |
| D. | 30 % |
| Answer» B. 40 % | |
| 197. |
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The velocity ratio of the lifting machine is |
| A. | 50 |
| B. | 55 |
| C. | 60 |
| D. | 65 |
| Answer» B. 55 | |
| 198. |
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is |
| A. | 15 |
| B. | 18 |
| C. | 20 |
| D. | 26 |
| Answer» D. 26 | |
| 199. |
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is |
| A. | Less than 1 |
| B. | Equal to 1 |
| C. | Between 1 and 2 |
| D. | Greater than 2 |
| Answer» B. Equal to 1 | |
| 200. |
The condilion for a lifting machine to be reversible is that its efficiency should be |
| A. | less than 50% |
| B. | more than 50% |
| C. | more than 66.67% |
| D. | equal to 100% |
| Answer» C. more than 66.67% | |