MCQOPTIONS
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MCQOPTIONS
This section includes 314 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
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. (b¬¨‚⧠+ bc + c¬¨‚â§)/3 (b + c) | |
| 252. |
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. | ‚à ö(gra/h) |
| C. | ‚à õ(gra/h) |
| D. | 4‚à ö(gra/h) |
| Answer» C. ‚Äö√ √µ(gra/h) | |
| 253. |
Minimum pull in a suspended cable with supports at two ends is equal to |
| A. | Horizontal thrust |
| B. | Support reactions |
| C. | Resultant of horizontal thrust and support reaction |
| D. | Half the weight of the cable |
| Answer» B. Support reactions | |
| 254. |
The dimensions of Gravitational Universal constant ‘G’ are$ |
| A. | M-1L2r2 |
| B. | M-1L3r2 |
| C. | M-2L3T2 |
| D. | M1L3T2 |
| Answer» C. M-2L3T2 | |
| 255. |
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 | |
| 256. |
The resultant of two forces acting at right angles is ‚à ö34 kg and acting at 60¬∞ is 70 kg. The forces are$ |
| A. | 1 kg and 4 kg |
| B. | 2 kg and 3 kg |
| C. | ‚à ö3 kg and ‚à ö5 kg |
| D. | 3 kg and 5 kg |
| Answer» E. | |
| 257. |
A flywheel of moment of inertia 20 kg.m is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is |
| A. | 1/2 |
| B. | 3/2 |
| C. | 2 |
| D. | 3 |
| Answer» C. 2 | |
| 258. |
Coefficient of friction depends on |
| A. | Nature of surfaces only |
| B. | Area of contact only |
| C. | Both (A) and (B) |
| D. | None of the above |
| Answer» B. Area of contact only | |
| 259. |
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. | |
| 260. |
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 | |
| 261. |
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* | |
| 262. |
If A is the amplitude of particle executing simple harmonic motion, then the total energy E of the particle is |
| A. | Proportional to A |
| B. | Proportional to A² |
| C. | Proportional to 1/A² |
| D. | Independent of A |
| Answer» C. Proportional to 1/A¬¨‚⧠| |
| 263. |
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 | |
| 264. |
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 cos≈í¬±/g | |
| 265. |
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 | |
| 266. |
The maximum frictional force which comes into play, when a body just begins to slide over the surface of a another body, is known |
| A. | Sliding friction |
| B. | Rolling friction |
| C. | Limiting friction |
| D. | None of these |
| Answer» D. None of these | |
| 267. |
At a given instant ship ‘A’ is travelling at 6 km/h due east and ship ‘B’ is travelling at 8 km/h due north. The velocity of ‘B’ relative to ‘A’ is$ |
| A. | 7 km/hrs |
| B. | 2 km/hrs |
| C. | 1 km/hrs |
| D. | 10 km/hrs |
| Answer» E. | |
| 268. |
A funicular polygon cannot be made to pass through |
| A. | One specified point |
| B. | Two specified points |
| C. | Three specified points |
| D. | More than three specified points |
| Answer» E. | |
| 269. |
A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is (i) 5000 Nm (ii) 5000 kg.m (iii) 5000 J |
| A. | Only (ii) |
| B. | Both (i) and (iii) |
| C. | Both (ii) and (iii) |
| D. | All (i), (ii) and (iii) |
| Answer» C. Both (ii) and (iii) | |
| 270. |
A system of coplanar forces acting on a rigid body can be reduced to |
| A. | One force only |
| B. | One couple only |
| C. | One force and one couple only |
| D. | None of the above |
| Answer» D. None of the above | |
| 271. |
A quantity whose dimensions are M2L2T3 could be the product of |
| A. | force and pressure |
| B. | mass and power |
| C. | energy and velocity |
| D. | force and velocity |
| Answer» C. energy and velocity | |
| 272. |
The angular speed of a car while taking a circular turn of radius 100 m at 36 km/hour, is |
| A. | 0.1 radian/sec |
| B. | 1 radian/sec |
| C. | 100 radian/sec |
| D. | 1000 radian/sec |
| Answer» B. 1 radian/sec | |
| 273. |
The member forces in a statically in determinate truss |
| A. | Can be obtained by graphic statics |
| B. | Cannot be obtained by graphic statics |
| C. | May be obtained by graphic statics |
| D. | Can be obtained by graphic statics by trial and error |
| Answer» C. May be obtained by graphic statics | |
| 274. |
The condition of equilibrium for any system of forces in a plane is |
| A. | That polygon of forces must close |
| B. | That resultant couple must be zero |
| C. | Both (A) and (B) |
| D. | None of the above |
| Answer» D. None of the above | |
| 275. |
When a body of mass M1 is hanging freely and another of mass M2 lying on a smooth inclined plane(α) are connected by a light index tensile string passing over a smooth pulley, the acceleration of the body of mass M1, will be given by$ |
| A. | g(M1 + M2 sin α)/(M1 + M2­) m/sec |
| B. | g(M1 - M2 sin α)/(M1 + M2­) m/sec² |
| C. | g(M2 + M1 sin α)/(M1 + M2­) m/sec² |
| D. | g(M2 × M1 sin α)/(M2 - M1­) m/sec² |
| Answer» C. g(M2 + M1 sin ≈í¬±)/(M1 + M2¬¨‚â ) m/sec¬¨‚⧠| |
| 276. |
In the structure shown in below figure, the member which carries zero force, is |
| A. | AB |
| B. | BC |
| C. | BE |
| D. | All the above |
| Answer» E. | |
| 277. |
A smooth cylinder lying on its convex surface remains |
| A. | In stable equilibrium |
| B. | In unstable equilibrium |
| C. | In neutral equilibrium |
| D. | Out of equilibrium |
| Answer» C. In neutral equilibrium | |
| 278. |
A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about |
| A. | 7000 km per hour |
| B. | 8000 km per hour |
| C. | 9000 km per hour |
| D. | 11,000 km per hour |
| Answer» E. | |
| 279. |
A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be$ |
| A. | [r (π + 0.25)]/(π - 0.5) |
| B. | [r (π - 0.5)]/(π + 0.25) |
| C. | [r (π - 0.25)]/(π - 0.5) |
| D. | [r (π + 0.25)]/(π + 0.5) |
| Answer» D. [r (≈ì√Ñ + 0.25)]/(≈ì√Ñ + 0.5) | |
| 280. |
A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first? |
| A. | Sphere with greater rotational energy at bottom than cylinder |
| B. | Sphere with lesser rotational energy at bottom than cylinder |
| C. | Cylinder with greater rotational energy at bottom than sphere |
| D. | Both reach the bottom simultaneously with equal rotational energy at bottom |
| Answer» C. Cylinder with greater rotational energy at bottom than sphere | |
| 281. |
The C.G. of the shaded area of the bellow figure from the x-axis is |
| A. | a/4 |
| B. | 3a/4 |
| C. | 3b/10 |
| D. | 3a/10 |
| Answer» D. 3a/10 | |
| 282. |
The ratio of unit of force in gravitational system to that in absolute system is (where ‘g’ is acceleration due to gravity)$ |
| A. | 1 |
| B. | g |
| C. | 1/g |
| D. | none of the above |
| Answer» C. 1/g | |
| 283. |
If the given forces P‚ÇÅ, P‚ÇÇ, P‚ÇÉ and P‚ÇÑ are such that the force polygon does not close, then the system will$ |
| A. | Be in equilibrium |
| B. | Always reduce to a resultant force |
| C. | Always reduce to a couple |
| D. | Both (A) and (C) |
| Answer» C. Always reduce to a couple | |
| 284. |
The reaction at the support ‘A’ of the beam shown in below figure is$ |
| A. | 2 t |
| B. | 5.8 t |
| C. | 0.2 t |
| D. | 3.5 t |
| Answer» B. 5.8 t | |
| 285. |
If two forces each equal to ‘T’ in magnitude act at right angles, their effect may be neutralized by a third force acting along their bisector in opposite direction whose magnitude will be$ |
| A. | 2 T |
| B. | 1/2 T |
| C. | ‚à ö2 T |
| D. | 3 T |
| Answer» D. 3 T | |
| 286. |
A car goes round a curve of radius 100 m at 25 m/sec. The angle to the horizontal at which the road must be banked to prevent sideways friction on the car wheels is tan"1 x, where x is (Assume g = 10 m/sec²)$ |
| A. | 3/8 |
| B. | 1/2 |
| C. | 9/5 |
| D. | 5/8 |
| Answer» E. | |
| 287. |
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/≈ì√¢ | |
| 288. |
If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are# |
| A. | 0 and 5 m/sec |
| B. | 5 m/sec and 0 |
| C. | 5‚à ö3 m/sec and 0 |
| D. | 5 and 5‚à ö3 m/sec |
| Answer» C. 5‚Äö√ √∂3 m/sec and 0 | |
| 289. |
A train weighing 196 tonnes experiences a frictional resistance of 5(11/22) per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is |
| A. | 5 ‚à ö10 m/sec |
| B. | 10 ‚à ö5 m/sec |
| C. | 5 ‚à ö3 m/sec |
| D. | 3 ‚à ö5 m/sec |
| Answer» B. 10 ‚Äö√ √∂5 m/sec | |
| 290. |
The dimensions of power are. |
| A. | M’L2T2 |
| B. | M’L’T3 |
| C. | M’L’r2 |
| D. | M’L-‘T* |
| Answer» C. M‚Äö√Ñ√¥L‚Äö√Ñ√¥r2 | |
| 291. |
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 | |
| 292. |
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 | |
| 293. |
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 | |
| 294. |
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 | |
| 295. |
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics? |
| A. | Howe truss |
| B. | King post truss |
| C. | Fink truss |
| D. | Warren truss |
| Answer» D. Warren truss | |
| 296. |
If ‘α’ is the angular acceleration of a compound pendulum whose angular displacement is ‘θ’, the frequency of the motion is# |
| A. | 2œÄ ‚à ö(Œ±/Œ∏) |
| B. | (1/2œÄ) ‚à ö(Œ±/Œ∏) |
| C. | 4œÄ ‚à ö(Œ±/Œ∏) |
| D. | 2œÄ ‚à ö(Œ± - Œ∏) |
| Answer» C. 4≈ì√Ñ ‚Äö√ √∂(≈í¬±/≈í‚àè) | |
| 297. |
The angle which an inclined surface makes with the horizontal 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 | |
| 298. |
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² 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 | |
| 299. |
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% | |
| 300. |
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 | |