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MCQOPTIONS
This section includes 5814 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 5201. |
Kinetic friction may be defined as |
| A. | friction force acting when the body is just about to move |
| B. | friction force acting when the body is in motion |
| C. | angle between normal reaction and resultant of normal reaction and limiting friction |
| D. | ratio of limiting friction and normal reaction. |
| Answer» C. angle between normal reaction and resultant of normal reaction and limiting friction | |
| 5202. |
If and u are angle of projection and initial velocity of a projectile respectively, the total time of flight, is given by |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/110-5.137-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/110-5.137-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/110-5.137-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/110-5.137-4.png"> |
| Answer» E. | |
| 5203. |
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. | |
| 5204. |
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. | |
| 5205. |
A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight |
| A. | vertical component of velocity remains constant |
| B. | horizontal component of velocity remains constant |
| C. | speed of the ball remains constant |
| D. | kinetic energy of the ball remains constant. |
| Answer» C. speed of the ball remains constant | |
| 5206. |
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. | |
| 5207. |
In simple harmonic motion, acceleration of a particle is proportional to |
| A. | rate of change of velocity |
| B. | displacement |
| C. | velocity |
| D. | direction |
| E. | none of these. |
| Answer» C. velocity | |
| 5208. |
On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts |
| A. | towards the wall at its upper end |
| B. | away from the wall at its upper end |
| C. | upwards at its upper end |
| D. | downwards at its upper end |
| E. | none of these. |
| Answer» D. downwards at its upper end | |
| 5209. |
The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed |
| A. | radially |
| B. | tangentially at that point |
| C. | away from the centre |
| D. | towards the centre. |
| Answer» C. away from the centre | |
| 5210. |
From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The c.g. of the remainder shifts from the original position through |
| A. | 0.25 cm |
| B. | 0.50 cm |
| C. | 0.75 cm |
| D. | 1.00 cm. |
| Answer» C. 0.75 cm | |
| 5211. |
One half of a vibration of a body, is called |
| A. | period time |
| B. | oscillation |
| C. | beat |
| D. | amplitude. |
| Answer» D. amplitude. | |
| 5212. |
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. | |
| 5213. |
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 |
| E. | all the above. |
| Answer» F. | |
| 5214. |
A geo-stationary satellite is one which orbits the earth with a velocity of rotation of |
| A. | moon |
| B. | earth |
| C. | sun |
| D. | pole. |
| Answer» C. sun | |
| 5215. |
The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane |
| A. | to be zero |
| B. | to be maximum |
| C. | to be minimum |
| D. | none of the these. |
| Answer» C. to be minimum | |
| 5216. |
A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if |
| A. | floor is smooth and the wall is rough |
| B. | floor is rough and the wall is smooth |
| C. | floor and wall both are smooth surfaces |
| D. | floor and wall both are rough surfaces. |
| Answer» D. floor and wall both are rough surfaces. | |
| 5217. |
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is |
| A. | 1.5 |
| B. | 5 |
| C. | 25 |
| D. | 314 |
| Answer» E. | |
| 5218. |
For a particle moving with a simple harrmonic motion, the frequency is |
| A. | directly proportional to periodic time |
| B. | inversely proportional to periodic time |
| C. | inversely proportional to its angular velocity |
| D. | directly proportional to its angular velocity |
| E. | none of these. |
| Answer» C. inversely proportional to its angular velocity | |
| 5219. |
To double the period of oscillation of a simple pendulum |
| A. | the mass of its bob should be doubled |
| B. | the mass of its bob should be quadrupled |
| C. | its lenght should be quadrupled |
| D. | its length should be doubled. |
| Answer» D. its length should be doubled. | |
| 5220. |
Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by |
| A. | 5.5 kg |
| B. | 6.25 kg |
| C. | 8.75 kg |
| D. | 10.5 kg. |
| Answer» D. 10.5 kg. | |
| 5221. |
The velocity of a moving body, is |
| A. | a vector quantity |
| B. | a scalar quantity |
| C. | a constant quantity |
| D. | none of these. |
| Answer» B. a scalar quantity | |
| 5222. |
The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is b and the vertical side is a, from its vertical face is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/116-5.227-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/116-5.227-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/116-5.227-3.png"> |
| D. | none of these. |
| Answer» B. <img src="/_files/images/civil-engineering/applied-mechanics/116-5.227-2.png"> | |
| 5223. |
The motion of a particle moving with S.H.M. from an extremity to the other, constitutes |
| A. | half an oscillation |
| B. | one full oscillation |
| C. | two oscillations |
| D. | none of these. |
| Answer» B. one full oscillation | |
| 5224. |
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. | |
| 5225. |
The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-4.png"> |
| E. | <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-5.png"> |
| Answer» D. <img src="/_files/images/civil-engineering/applied-mechanics/103-5.44-4.png"> | |
| 5226. |
A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is |
| A. | 16 m/sec |
| B. | 18 m/sec |
| C. | 20 m/sec |
| D. | 22 m/sec. |
| Answer» D. 22 m/sec. | |
| 5227. |
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 |
| E. | All the above. |
| Answer» C. Instantaneous axis | |
| 5228. |
When a body falls freely under gravitational force, it possesses |
| A. | maximum weight |
| B. | minimum weight |
| C. | no weight |
| D. | no effect on its weight. |
| Answer» D. no effect on its weight. | |
| 5229. |
The frequency of oscillation on moon as compared to that on earth, will be |
| A. | 2.44 times more |
| B. | 2.44 times less |
| C. | 3 times less |
| D. | 3 times more. |
| Answer» C. 3 times less | |
| 5230. |
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 | |
| 5231. |
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. | |
| 5232. |
The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator |
| A. | eastward |
| B. | northward |
| C. | westward |
| D. | southward |
| E. | upward. |
| Answer» B. northward | |
| 5233. |
On a mass m describing a circular path of radius r, the centrifugal force |
| A. | acts tangentially to the circular path |
| B. | acts towards the centre of rotation |
| C. | acts away from the centre of rotation |
| D. | is |
| E. | <img src="/_files/images/civil-engineering/applied-mechanics/120-5.272-1.png"> |
| Answer» C. acts away from the centre of rotation | |
| 5234. |
The Centre of gravity of a 10 x 15 x 5 cm T section from its bottom, is |
| A. | 7.5 cm |
| B. | 5.0 cm |
| C. | 8.75 cm |
| D. | 7.85 cm |
| E. | none of above. |
| Answer» D. 7.85 cm | |
| 5235. |
A particle moving with a simple harmonic motion, attains its maximum velocity when it passes |
| A. | the extreme point of the oscillation |
| B. | through the mean position |
| C. | through a point at half amplitude |
| D. | none of these. |
| Answer» C. through a point at half amplitude | |
| 5236. |
The moment of intertia of a circular lamina of diameter d, about an axis perpendicular to the plane of the lamina and passing through its centre, is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-4.png"> |
| E. | <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-5.png"> |
| Answer» E. <img src="/_files/images/civil-engineering/applied-mechanics/115-5.210-5.png"> | |
| 5237. |
If l is the span of a light suspension bridge whose each cable carries total weight (w) and the central dip is y, the horizontal pull at each support, is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/114-5.195-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/114-5.195-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/114-5.195-3.png"> |
| D. | <i>wl</i> |
| E. | . |
| Answer» C. <img src="/_files/images/civil-engineering/applied-mechanics/114-5.195-3.png"> | |
| 5238. |
If the resultant of two forces P and Q acting at an angle makes an angle with P, then tan equals |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/applied-mechanics/99-5.6-3.png"> | |
| 5239. |
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 | |
| 5240. |
Pick up the correct statement from the following. The kinetic energy of a body |
| A. | before impact is equal to that after impact |
| B. | before impact is less than that after impact |
| C. | before impact is more than that after impact |
| D. | remains constant |
| E. | none of these. |
| Answer» D. remains constant | |
| 5241. |
The displacement of a particle which moves along a straight line is given by S = 4t3 + 3t2 - 10 where S is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/56-3.94-2.png"> |
| B. | sec |
| C. | 1 sec |
| D. | 1.5 sec |
| E. | 1.5 sec. |
| Answer» C. 1 sec | |
| 5242. |
Periodic time of body moving with simple harmonic motion, is |
| A. | directly proportional to its angular velocity |
| B. | directly porportional to the square of its angular velocity |
| C. | inversly proportional to the square of its angular velocity |
| D. | inversely proportional to its angular velocity. |
| Answer» E. | |
| 5243. |
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts |
| A. | downwards at its upper end |
| B. | upwards at its upper end |
| C. | perpendicular to the wall at its upper end |
| D. | zero at its upper end |
| E. | none of these. |
| Answer» E. none of these. | |
| 5244. |
The motion of a bicycle wheel is |
| A. | translatory |
| B. | rotary |
| C. | rotary and translatory |
| D. | curvilinear |
| Answer» D. curvilinear | |
| 5245. |
The centre of gravity of a plane lamina will not be at its geometrical centre if it is a |
| A. | circle |
| B. | equilateral triangle |
| C. | rectangle |
| D. | square |
| E. | right angled triangle. |
| Answer» F. | |
| 5246. |
A rigid body suspended Vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called |
| A. | simple pendulum |
| B. | compour pendulum |
| C. | Second's pendulum |
| D. | none of these. |
| Answer» C. Second's pendulum | |
| 5247. |
If a ball which is dropped from a height of 2.25 m on a smooth floor attains the height of bounce equal to 1.00 m, the coefficient of the restitution between the ball and floor, is |
| A. | 0.25 |
| B. | 0.50 |
| C. | 0.67 |
| D. | 0.33 |
| E. | 0.75 |
| Answer» C. 0.67 | |
| 5248. |
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is |
| A. | 5.88 m/sec |
| B. | 8.88 m/sec |
| C. | 10.88 m/sec |
| D. | 12.88 m/sec. |
| Answer» D. 12.88 m/sec. | |
| 5249. |
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. | <img src="/_files/images/civil-engineering/applied-mechanics/109-5.129-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/109-5.129-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/109-5.129-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/109-5.129-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/applied-mechanics/109-5.129-3.png"> | |
| 5250. |
If the velocity of projection is 4 m/sec and the angle of projection is , the maximum height of the projectile from a horizontal plane, is |
| A. | <img src="/_files/images/civil-engineering/applied-mechanics/106-5.84-1.png"> |
| B. | <img src="/_files/images/civil-engineering/applied-mechanics/106-5.84-2.png"> |
| C. | <img src="/_files/images/civil-engineering/applied-mechanics/106-5.84-3.png"> |
| D. | <img src="/_files/images/civil-engineering/applied-mechanics/106-5.84-4.png"> |
| Answer» C. <img src="/_files/images/civil-engineering/applied-mechanics/106-5.84-3.png"> | |