MCQOPTIONS
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MCQOPTIONS
This section includes 267 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of |
| A. | 5 Newtons |
| B. | 8 Newtons |
| C. | 10 Newtons |
| D. | 12 Newtons. |
| Answer» D. 12 Newtons. | |
| 202. |
The angle which an inclined surface makes with the horiontal when a body placed on it is on the point of moving down, is called |
| A. | angle of repose |
| B. | angle of friction |
| C. | angle of inclination |
| D. | none of these. |
| Answer» B. angle of friction | |
| 203. |
In simple harmonic motion, acceleration of a particle is proportional to |
| A. | rate of change of velocity |
| B. | displacement |
| C. | velocity |
| D. | direction |
| Answer» C. velocity | |
| 204. |
Ball A of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after impact would be |
| A. | zero |
| B. | 5 m/sec |
| C. | 10 m/sec |
| D. | none of these. |
| Answer» D. none of these. | |
| 205. |
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. | |
| 206. |
The reaction at the central support B of the beam ABC hinged at D shown in below figure is |
| A. | 2 t |
| B. | 5.8 t |
| C. | 0.2 t |
| D. | 3.5 t. |
| Answer» C. 0.2 t | |
| 207. |
The tension in a cable supporting a lift |
| A. | is more when the lift is moving downwards |
| B. | is less when the lift is moving upwards |
| C. | remains constant whether its moves downwards or upwards |
| D. | is less when the lift is moving downwards. |
| Answer» E. | |
| 208. |
If a spherical body is symmetrical about its perpendicular axes, the moment of inertia of the body about an axis passing through its centre of gravity as given by Routh's rule is obtained by dividing the product of the mass and the sum of the squares of two semi-axes by n where n is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» E. | |
| 209. |
The length of a Second's pendulum, is |
| A. | 99.0 cm |
| B. | 99.4 cm |
| C. | 100 cm |
| D. | 101 cm |
| Answer» C. 100 cm | |
| 210. |
The resultant of the forces acting on a body will be zero if the body |
| A. | rotates |
| B. | moves with variable velocity in a straight line |
| C. | moves along a curved path |
| D. | does not move at all. |
| Answer» E. | |
| 211. |
A string of length 90 cm is fastened to two points A and B at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force P is applied to the ring such that it is in equilibrium vertically below B. The value of P is : |
| A. | 40 g |
| B. | 60 g |
| C. | 80 g |
| D. | 100 g. |
| Answer» D. 100 g. | |
| 212. |
In the structure shown in below figure, the member which carries zero force, is |
| A. | AB |
| B. | BC |
| C. | BE |
| D. | BD |
| Answer» E. | |
| 213. |
A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be |
| A. | 0.01 m/sec |
| B. | 0.05 m/sec |
| C. | 1.00 m/sec |
| D. | 1.5 m/see. |
| Answer» C. 1.00 m/sec | |
| 214. |
Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is |
| A. | 20 kg |
| B. | 25 kg |
| C. | 30 kg |
| D. | 35 kg |
| Answer» C. 30 kg | |
| 215. |
Lami's theroem states that |
| A. | three forces acting at a point are always in equilibrium |
| B. | if three forces acting on a point can be represented in magnitude and direction by the sides of a triangle, the point will be in the state of equilibrium |
| C. | three coplaner forces acting at a point will be in equilibrium, if each force is proportional to the sine of the angle between the other two |
| D. | three coplaner forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two |
| Answer» D. three coplaner forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two | |
| 216. |
If a particle is projected inside a horizontal tunnel which is 554 cm high with a velocity of 60 m per sec, the angle of projection for maximum range, is |
| A. | 8° |
| B. | 9° |
| C. | 10° |
| D. | 11° |
| Answer» D. 11¬∞ | |
| 217. |
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. | 0.4 |
| D. | 0.5 |
| Answer» E. | |
| 218. |
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. | |
| 219. |
The force which produces an acceleration of 1 m/sec2 in a mass of one kg, is called |
| A. | dyne |
| B. | Netwon |
| C. | joule |
| D. | erg. |
| Answer» C. joule | |
| 220. |
One half of a vibration of a body, is called |
| A. | period time |
| B. | oscillation |
| C. | beat |
| D. | amplitude. |
| Answer» D. amplitude. | |
| 221. |
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is |
| A. | 0.25 |
| B. | 0.5 |
| C. | 0.75 |
| D. | 1 |
| Answer» C. 0.75 | |
| 222. |
Work may be defined as |
| A. | force x distance |
| B. | force x velocity |
| C. | force x acceleration |
| D. | none of these. |
| Answer» B. force x velocity | |
| 223. |
The total time of collision and restitution of two bodies, is called |
| A. | time of collision |
| B. | period of collision |
| C. | period of impact |
| D. | all the above. |
| Answer» E. | |
| 224. |
If a body is acted upon by a number of coplaner non-concurrent forces, it may |
| A. | rotate about itself without moving |
| B. | move in any one direction |
| C. | move in any one direction rotating about itself |
| D. | be completely at rest |
| Answer» E. | |
| 225. |
A weight of 100 kg is supported by a string whose ends are attached to pegs A and B at the same level shown in below figure. The tension in the string is |
| A. | 50 kg |
| B. | 75 kg |
| C. | 100 kg |
| D. | 120 kg. |
| Answer» D. 120 kg. | |
| 226. |
A body is said to move with Simple Harmonic Motion if its acceleration, is |
| A. | always directed away from the centre, the point of reference |
| B. | proportional to the square of the distance from the point of reference |
| C. | proportional to the distance from the point of reference and directed towards it |
| D. | inversely proportion to the distance from the point of reference |
| Answer» D. inversely proportion to the distance from the point of reference | |
| 227. |
The product of mass and velocity of a moving a body, is called |
| A. | moment |
| B. | momentum |
| C. | power |
| D. | impulse. |
| Answer» C. power | |
| 228. |
A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be |
| A. | zero |
| B. | 0.5 m/sec |
| C. | 1.0 m/sec |
| D. | 2.0 m/sec. |
| Answer» D. 2.0 m/sec. | |
| 229. |
A particle moves along a straight line such that distance x traversed in t seconds is given by x = t2(t + 1), the acceleration of the particle, will be |
| A. | 3t3 - 2t |
| B. | 3t2 + 2t |
| C. | 6t - 2 |
| D. | 6t + 2 |
| Answer» E. | |
| 230. |
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 | |
| 231. |
A spring scale in a stationary lift shows a reading of 60 kg for a man standing on it. If the lift starts descending at an acceleration of g/5, the scale reading would be |
| A. | 48 kg |
| B. | 60 kg |
| C. | 72 kg |
| D. | none of these. |
| Answer» B. 60 kg | |
| 232. |
Joule is the unit of |
| A. | work |
| B. | force |
| C. | power |
| D. | torque |
| Answer» B. force | |
| 233. |
Engineer's units of force, is |
| A. | Newton in absolute units |
| B. | Dyne in absolute units |
| C. | Newton and dyne in absolute units |
| D. | All the above. |
| Answer» B. Dyne in absolute units | |
| 234. |
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. | 85 m/sec. |
| Answer» E. | |
| 235. |
The units of inertia of mass, are |
| A. | kg/m |
| B. | kg/m2 |
| C. | m4 |
| D. | m3 |
| Answer» E. | |
| 236. |
A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is |
| A. | 2 cm |
| B. | 3 cm |
| C. | 4 cm |
| D. | 5 cm. |
| Answer» E. | |
| 237. |
The centre of gravity of a quadrant of a circle lies along its central radius at a distance of |
| A. | 0.2 R |
| B. | 0.3 R |
| C. | 0.4 R |
| D. | 0.5 R |
| Answer» E. | |
| 238. |
The unit of Moment of Inertia of a body, is |
| A. | m |
| B. | m2 |
| C. | m3 |
| D. | m4 |
| Answer» E. | |
| 239. |
The intrinsic equation of catenary is |
| A. | S = c tan ψ |
| B. | y = c cosh x/c |
| C. | y = c cosh ψ |
| D. | y = c sinh ψ. |
| Answer» B. y = c cosh x/c | |
| 240. |
The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is , the velocities of separation of the balls will be equal to |
| A. | original velocity in the same direction |
| B. | half the original velocity in the same direction |
| C. | half the original velocity in the opposite direction |
| D. | original velocity in the opposite direction |
| Answer» E. | |
| 241. |
Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by |
| A. | its longer side" |
| B. | its shorter side" |
| C. | the diagonal of the parallelogram which does not pass through the point of intersection of the forces" |
| D. | the diagonal of the parallelogram which passes through the point of intersection of the forces" |
| Answer» E. | |
| 242. |
The C.G. of a right circular cone lies on its axis of symmetry at a height of |
| A. | h/2 |
| B. | h/3 |
| C. | h/4 |
| D. | h/5 |
| Answer» D. h/5 | |
| 243. |
The rate of change of displacement of a body with respect to its surrounding, is known |
| A. | velocity |
| B. | acceleration |
| C. | speed |
| D. | none of these. |
| Answer» D. none of these. | |
| 244. |
Pick up the incorrect statement from the following. In a simple harmonic motion |
| A. | velocity is maximum at its mean position |
| B. | velocity is minimum at the end of the storke |
| C. | acceleration is minimum at the end of the stroke |
| D. | acceleration is zero at the mean position. |
| Answer» D. acceleration is zero at the mean position. | |
| 245. |
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' | |
| 246. |
One Newton force, is |
| A. | 103 dynes |
| B. | 104 dynes |
| C. | 105 dynes |
| D. | 106 dynes |
| Answer» D. 106 dynes | |
| 247. |
The unit of force in C.G.S. system of units, is called |
| A. | dyne |
| B. | Newton |
| C. | kg |
| D. | all the above. |
| Answer» B. Newton | |
| 248. |
For a simple pendulum, the period of one oscillation is |
| A. | 2πl/2g |
| B. | 2π2g/l |
| C. | 2πl/g |
| D. | 2πg/2l. |
| Answer» D. 2œÄg/2l. | |
| 249. |
Centre of gravity of a thin hollow cone lies on the axis of symmmetry at a height of |
| A. | one-half of the total height above base |
| B. | one-third of the total height above base |
| C. | one-fourth of the total height above base |
| D. | none of these. |
| Answer» C. one-fourth of the total height above base | |
| 250. |
For a body moving with simple harmonic motion, the number of cycles per second, is known as its |
| A. | oscillation |
| B. | amplitude |
| C. | periodic time |
| D. | beat |
| Answer» E. | |