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.
| 301. |
If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to |
| A. | 7 kg |
| B. | 1 kg |
| C. | 5 kg |
| D. | None of these |
| Answer» D. None of these | |
| 302. |
Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down |
| A. | Rubber and lead balls undergo equal changes in momentum |
| B. | Change in momentum suffered by lead ball is less that of rubber ball |
| C. | Momentum of rubber ball is less than that of lead ball |
| D. | None of these |
| Answer» E. | |
| 303. |
The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is band the vertical side is a, from its vertical face is |
| A. | (a² + ab + b²)/3 (a + b) |
| B. | (b² + bc + c²)/3 (b + c) |
| C. | (a² + ab + c²)/3 (a + c) |
| D. | None of these |
| Answer» B. (b² + bc + c²)/3 (b + c) | |
| 304. |
If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be |
| A. | 20 rad/sec |
| B. | 15 rad/sec |
| C. | 10 rad/sec |
| D. | 5 rad/sec |
| Answer» E. | |
| 305. |
A body of weight ‘w’ placed on an inclined plane is acted upon by a force ‘P’ parallel to the plane which causes the body just to move up the plane. If the angle of inclination of the plane is ‘θ’ and angle of friction is ‘φ’, the minimum value of ‘P’, is |
| A. | w sin (φ - θ)/cos φ |
| B. | w sin (θ - φ)/cos φ |
| C. | w cos (θ + φ)/cos φ |
| D. | w sinθ cos(θ - φ)/sin φ |
| Answer» C. w cos (θ + φ)/cos φ | |
| 306. |
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 | |
| 307. |
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 | |
| 308. |
A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be |
| A. | gra/h |
| B. | √(gra/h) |
| C. | ∛(gra/h) |
| D. | 4√(gra/h) |
| Answer» C. ∛(gra/h) | |
| 309. |
A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in |
| A. | 5 sec |
| B. | 8 sec |
| C. | 10 sec |
| D. | 20 sec |
| Answer» D. 20 sec | |
| 310. |
If a particle moves with a uniform angular velocity ‘ω’ radians/sec along the circumference of a circle of radius ‘r’, the equation for the velocity of the particle, is |
| A. | v = ω √(y² - r²) |
| B. | y = ω √(y - r) |
| C. | v = ω √(r² + y²) |
| D. | v = ω √(r² - y²) |
| Answer» E. | |
| 311. |
Periodic time of a particle moving with simple harmonic motion is the time taken by the particle for |
| A. | Half oscillation |
| B. | Quarter oscillation |
| C. | Complete oscillation |
| D. | None of these |
| Answer» D. None of these | |
| 312. |
Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction.The speeds of the objects are: |
| A. | 2 m/sec and 2 m/sec |
| B. | 3 m/sec and 2 m/sec |
| C. | 3 m/sec and 3 m/sec |
| D. | 4 m/sec and 6 m/sec |
| Answer» C. 3 m/sec and 3 m/sec | |
| 313. |
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 | |
| 314. |
A satellite goes on moving along its orbit round the earth due to |
| A. | Gravitational force |
| B. | Centrifugal force |
| C. | Centripetal force |
| D. | None of these |
| Answer» C. Centripetal force | |
| 315. |
A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is |
| A. | 2 J |
| B. | 4 J |
| C. | 6 J |
| D. | 8 J |
| Answer» C. 6 J | |
| 316. |
The following is not a law of static friction: |
| A. | The force of friction always acts in a direction opposite to that in which the body tends to move |
| B. | The force of friction is dependent upon the area of contact |
| C. | The force of friction depends upon the roughness of the surface |
| D. | The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces |
| Answer» B. The force of friction is dependent upon the area of contact | |
| 317. |
M.I. of solid sphere, is |
| A. | ⅔ Mr² |
| B. | ½ Mr² |
| C. | Mr² |
| D. | πr4/2 |
| Answer» D. πr4/2 | |
| 318. |
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 | |
| 319. |
The motion of a particle is described by the relation x = t²- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be |
| A. | Zero |
| B. | 30 m |
| C. | 50 m |
| D. | 60 m |
| Answer» B. 30 m | |
| 320. |
Which of the following is a scalar quantity? |
| A. | Energy |
| B. | Momentum |
| C. | Torque |
| D. | Impulse |
| Answer» B. Momentum | |
| 321. |
When a circular wheel rolls on a straight track, then the shape of body centrode and space centrode respectively are |
| A. | Straight line and parabola |
| B. | Straight line and circle |
| C. | Circle and straight line |
| D. | Circle and parabola |
| Answer» D. Circle and parabola | |
| 322. |
A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are |
| A. | 1346.3 kN and 1500 kN |
| B. | 1436.2 kN and 1250 kN |
| C. | 1346.3 kN and 1250 kN |
| D. | 1436.2 kN and 1500 kN |
| Answer» D. 1436.2 kN and 1500 kN | |
| 323. |
Time period and length of a second’s pendulum respectively are |
| A. | 1 sec and 99.4 cm |
| B. | 1 sec and 92.7 cm |
| C. | 2 sec and 99.4 cm |
| D. | 2 sec and 92.7 cm |
| Answer» D. 2 sec and 92.7 cm | |
| 324. |
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. | |
| 325. |
The resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’, is |
| A. | P² + Q² + 2P sin θ |
| B. | P² + Q² + 2PQ cos θ |
| C. | P² + Q² + 2PQ tan θ |
| D. | √(P² + Q² + 2PQ cos θ) |
| Answer» E. | |
| 326. |
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 | |
| 327. |
In case of S.H.M. the period of oscillation (T), is given by |
| A. | T = 2ω/π² |
| B. | T = 2π/ω |
| C. | T = 2/ω |
| D. | T = π/2ω |
| Answer» C. T = 2/ω | |
| 328. |
One Joule is equivalent to |
| A. | 9.81 Newton metre |
| B. | 1 Newton metre |
| C. | 1 kg wt metre |
| D. | 1 dyne metre |
| Answer» C. 1 kg wt metre | |
| 329. |
It is observed that in a certain sinusoidal oscillation, the amplitude is linearly dependent on the frequency f . If the maximum velocity during the oscillation is V , then V must be proportional to |
| A. | f |
| B. | 1/f |
| C. | 1/f² |
| D. | f² |
| Answer» E. | |
| 330. |
A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec2 . Time required to traverse a distance of 1.5 m, is |
| A. | 40 sec |
| B. | 30 sec |
| C. | 20 sec |
| D. | 15 sec |
| Answer» D. 15 sec | |
| 331. |
A point subjected to a number of forces will be in equilibrium, if |
| A. | Sum of resolved parts in any two directions at right angles, are both zero |
| B. | Algebraic sum of the forces is zero |
| C. | Two resolved parts in any two directions at right angles are equal |
| D. | Algebraic sum of the moments of the forces about the point is zero |
| Answer» B. Algebraic sum of the forces is zero | |
| 332. |
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kgm² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is |
| A. | 50 J |
| B. | 150 J |
| C. | 200 J |
| D. | 400 J |
| Answer» D. 400 J | |
| 333. |
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 ½, 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. | |
| 334. |
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 | |
| 335. |
The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface |
| A. | Uneven distribution of the gravitational field |
| B. | Gravity of the sun and the moon |
| C. | Aerodynamic forces |
| D. | None of these |
| Answer» E. | |
| 336. |
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. | |
| 337. |
A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is |
| A. | 60 N |
| B. | 80 N |
| C. | 100 N |
| D. | 120 N |
| Answer» E. | |
| 338. |
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 | |
| 339. |
For a non-concurrent force system to be in equilibrium |
| A. | Only the closure of force polygon is sufficient |
| B. | Only the closure of funicular polygon is sufficient |
| C. | Both force polygon and funicular polygon must close |
| D. | None of the above |
| Answer» D. None of the above | |
| 340. |
The force acting on a point on the surface of a rigid body may be considered to act |
| A. | At the centre of gravity of the body |
| B. | On the periphery of the body |
| C. | On any point on the line of action of the force |
| D. | At any point on the surface normal to the line of action of the force |
| Answer» D. At any point on the surface normal to the line of action of the force | |
| 341. |
A satellite moves in its orbit around the earth due to |
| A. | Gravitational force |
| B. | Centripetal force |
| C. | Centrifugal force |
| D. | None of these |
| Answer» C. Centrifugal force | |
| 342. |
The centre of gravity of a homogenous body is the point at which the whole |
| A. | Volume of the body is assumed to be concentrated |
| B. | Area of the surface of the body is assumed to be concentrated |
| C. | Weight of the body is assumed to be concentrated |
| D. | All the above |
| Answer» D. All the above | |
| 343. |
The force polygon representing a set of forces in equilibrium is a |
| A. | Triangle |
| B. | Open polygon |
| C. | Closed polygon |
| D. | Parallelogram |
| Answer» D. Parallelogram | |
| 344. |
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 | |
| 345. |
The angular speed of a car taking a circular turn of radius 100 m at 36 km/hr will be |
| A. | 0.1 rad/sec |
| B. | 1 rad/sec |
| C. | 10 rad/sec |
| D. | 100 rad/sec |
| Answer» B. 1 rad/sec | |
| 346. |
The ratio of the moment of inertia of a rectangle about its centroidal axis to the moment of inertia about its base, is |
| A. | 1/4 |
| B. | 1/2 |
| C. | 3/4 |
| D. | 2 |
| Answer» B. 1/2 | |
| 347. |
At a given instant ship is travelling at 6 km/h due east and ship is travelling at 8 km/h due north. The velocity of relative to is |
| A. | 7 km/hrs |
| B. | 2 km/hrs |
| C. | 1 km/hrs |
| D. | 10 km/hrs |
| Answer» E. | |
| 348. |
A stone is whirled in a vertical circle, the tension in the string, is maximum |
| A. | When the string is horizontal |
| B. | When the stone is at the highest position |
| C. | When the stone is at the lowest position |
| D. | At all the positions |
| Answer» D. At all the positions | |
| 349. |
The maximum pull in a cable, carrying a uniformly distributed load and supported at two ends which are at the same level, is at |
| A. | Supports |
| B. | Quarter span |
| C. | Mid span |
| D. | None of the above |
| Answer» B. Quarter span | |
| 350. |
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° | |