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MCQOPTIONS
This section includes 4791 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 2251. |
Two forces are acting at an angle of 120 . The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is |
| A. | 20 N |
| B. | 40 N |
| C. | 80 N |
| D. | none of these |
| Answer» B. 40 N | |
| 2252. |
An ideal machine is one whose efficiency is |
| A. | between 60 and 70 % |
| B. | between 70 and 80% |
| C. | between 80 and 90% |
| D. | 100% |
| Answer» E. | |
| 2253. |
The energy possessed by a body, for doing work by virtue of its position, is called |
| A. | potential energy |
| B. | kinetic energy |
| C. | electrical energy |
| D. | chemical energy |
| Answer» B. kinetic energy | |
| 2254. |
The velocity of a body on reaching the ground from a height h, is |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/39-184-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/39-184-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/39-184-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/39-184-4.png"> |
| Answer» D. <img src="/_files/images/mechanical-engineering/engineering-mechanics/39-184-4.png"> | |
| 2255. |
In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC. |
| A. | half |
| B. | equal to |
| C. | double |
| Answer» B. equal to | |
| 2256. |
The forces, which meet at one point and their lines of action also lie on the same plane, are known as |
| A. | coplaner concurrent forces |
| B. | coplaner non-concurrent forces |
| C. | non-coplaner concurrent forces |
| D. | non-coplaner non-concurrent forces |
| Answer» B. coplaner non-concurrent forces | |
| 2257. |
The amount by which the outer edge of the rail is raised, is known as super-elevation. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 2258. |
The unit of force in S.I. system of units is |
| A. | dyne |
| B. | kilogram |
| C. | newton |
| D. | watt |
| Answer» D. watt | |
| 2259. |
The centre of gravity of a rectangle lies at a point where its two diagonals meet each other. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 2260. |
A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints. |
| A. | equal to |
| B. | less than |
| C. | greater than |
| D. | either (b) or (c) |
| Answer» B. less than | |
| 2261. |
The motion of the body from one extremity to the other is known as a beat. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 2262. |
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act |
| A. | downward at its upper end |
| B. | upward at its upper end |
| C. | zero at its upper end |
| D. | perpendicular to the wall at its upper end |
| Answer» D. perpendicular to the wall at its upper end | |
| 2263. |
Efficiency of a screw jack is given by(where = Helix angle, and = Angle of friction.) |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/34-130-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/34-130-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/34-130-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/34-130-4.png"> |
| Answer» C. <img src="/_files/images/mechanical-engineering/engineering-mechanics/34-130-3.png"> | |
| 2264. |
Frequency of vibrations means the number of cycles per second. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 2265. |
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force. |
| A. | less than |
| B. | greater than |
| Answer» C. | |
| 2266. |
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called |
| A. | Newton's first law of motion |
| B. | Newton's second law of motion |
| C. | principle of conservation of energy |
| D. | principle of conservation of momentum |
| Answer» E. | |
| 2267. |
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/36-155-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/36-155-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/36-155-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/36-155-4.png"> |
| Answer» D. <img src="/_files/images/mechanical-engineering/engineering-mechanics/36-155-4.png"> | |
| 2268. |
The unit of mass moment of inertia in S.I. units is kg-m2. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2269. |
Concurrent forces are those forces whose lines of action |
| A. | lie on the same line |
| B. | meet at one point |
| C. | meet on the same plane |
| D. | none of these |
| Answer» C. meet on the same plane | |
| 2270. |
Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration. |
| A. | upwards |
| B. | downwards |
| Answer» B. downwards | |
| 2271. |
The resultant of two forces P and Q acting at an angle is |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/3-10-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/3-10-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/3-10-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/3-10-4.png"> |
| Answer» C. <img src="/_files/images/mechanical-engineering/engineering-mechanics/3-10-3.png"> | |
| 2272. |
In a framed structure, as shown in the below figure, the force in the member AC is numerically equal to the force in member BC. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 2273. |
The force which acts along the radius of a circle and directed towards the centre of the circle is known as centripetal force. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2274. |
Which of the following are vector quantities? |
| A. | Linear displacement |
| B. | Linear velocity |
| C. | Linear acceleration |
| D. | all of these |
| Answer» E. | |
| 2275. |
The principle of transmissibility of forces states that, when a force acts upon a body, its effect is |
| A. | same at every point on its line of action |
| B. | different at different points on its line of action |
| C. | minimum, if it acts at the centre of gravity of the body |
| D. | maximum, if it acts at the centre of gravity of the body |
| Answer» D. maximum, if it acts at the centre of gravity of the body | |
| 2276. |
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 40 |
| Answer» C. 20 | |
| 2277. |
If three forces acting at a point are represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are in equilibrium. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 2278. |
Newton's second law motion __________ a relation between force and mass of a moving body. |
| A. | gives |
| B. | does not give |
| Answer» B. does not give | |
| 2279. |
If a number of forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, then the forces are not in equilibrium. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 2280. |
The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity. |
| A. | directly |
| B. | inversely |
| Answer» C. | |
| 2281. |
The motion of a particle round a fixed axis is |
| A. | translatory |
| B. | rotary |
| C. | circular |
| D. | translatory as well as rotatry |
| Answer» D. translatory as well as rotatry | |
| 2282. |
The process of finding out the resultant force is called __________ of forces. |
| A. | composition |
| B. | resolution |
| Answer» B. resolution | |
| 2283. |
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is |
| A. | reversible |
| B. | non-reversible |
| C. | ideal |
| Answer» B. non-reversible | |
| 2284. |
A framed structure, as shown in the below figure, is a |
| A. | perfect frame |
| B. | deficient frame |
| C. | redundant frame |
| D. | none of the above |
| Answer» B. deficient frame | |
| 2285. |
The rate of change of displacement of a body is called |
| A. | velocity |
| B. | acceleration |
| C. | momentum |
| D. | none of these |
| Answer» B. acceleration | |
| 2286. |
The periodic time (T) is given by(where = Angular velocity of particle in rad / s.) |
| A. | /2 |
| B. | 2 / |
| C. | 2 x |
| D. | / |
| Answer» C. 2 x | |
| 2287. |
The centre of oscillation and centre of suspension for a compound pendulum are interchangeable. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2288. |
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by(where = Deflection of the spring.) |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/45-253-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/45-253-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/45-253-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/45-253-4.png"> |
| Answer» C. <img src="/_files/images/mechanical-engineering/engineering-mechanics/45-253-3.png"> | |
| 2289. |
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load. |
| A. | less than |
| B. | equal to |
| C. | more than |
| Answer» B. equal to | |
| 2290. |
The radius of gyration is the distance where the whole mass (or area) of a body is assumed to be concentrated. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 2291. |
In the shown figure, the tension (T) in the string will be |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/41-205-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/41-205-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/41-205-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/41-205-3.png"> |
| Answer» C. <img src="/_files/images/mechanical-engineering/engineering-mechanics/41-205-3.png"> | |
| 2292. |
If three coplaner forces acting on a point are in equilibrium, then each force is proportional to the sine, of the angle between the other two. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 2293. |
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of |
| A. | 1m |
| B. | 2m |
| C. | 3m |
| D. | 4m |
| Answer» C. 3m | |
| 2294. |
When the spring of a watch is wound, it will possess |
| A. | strain energy |
| B. | kinetic energy |
| C. | heat energy |
| D. | electrical energy |
| Answer» B. kinetic energy | |
| 2295. |
The angle of inclination with the vertical is __________ if the cyclist is running at a faster speed than that when he is running at a slower speed. |
| A. | more |
| B. | less |
| Answer» B. less | |
| 2296. |
The range of projectile(R) on an upward inclined plane is |
| A. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/43-225-1.png"> |
| B. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/43-225-2.png"> |
| C. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/43-225-3.png"> |
| D. | <img src="/_files/images/mechanical-engineering/engineering-mechanics/43-225-4.png"> |
| Answer» E. | |
| 2297. |
The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 2298. |
A couple produces |
| A. | translatory motion |
| B. | rotational motion |
| C. | combined translatory and rotational motion |
| D. | none of the above |
| Answer» C. combined translatory and rotational motion | |
| 2299. |
Energy may be defined as the capacity of doing work. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 2300. |
For a self locking machine, the efficiency must be |
| A. | equal to 50% |
| B. | less than 50% |
| C. | greater than 50% |
| D. | 100% |
| Answer» C. greater than 50% | |