MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 439 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be |
| A. | 30° |
| B. | 45° |
| C. | 60° |
| D. | 75°. |
| Answer» E. | |
| 352. |
The horizontal reaction at the support A of the structure shown in below figure, is |
| A. | zero |
| B. | 1 t |
| C. | 2 t |
| D. | 3 t |
| Answer» B. 1 t | |
| 353. |
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 | |
| 354. |
A pilot flies a small plane in a vertical loop of radius r. At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is g, the speed of the plane at the top of its trajectory would be |
| A. | zero |
| B. | infinite |
| C. | √gr |
| D. | √2gr |
| Answer» D. √2gr | |
| 355. |
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 | |
| 356. |
Moment of interia of a squares of side fa about an axis through its centre of gravity, is |
| A. | b³/4 |
| B. | b⁴/12 |
| C. | b⁴/3 |
| D. | b⁴/8 |
| Answer» C. b⁴/3 | |
| 357. |
For the given values of initial velocity of projection and angle of inclination of the plane, the maximum range for a projectile projected upwards will be obtained, if the angle of projection is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 358. |
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. | |
| 359. |
Newtons's Law of Motion is : |
| A. | Every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force |
| B. | The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts |
| C. | To every action, there is always an equal and opposite reaction |
| D. | All the above. |
| Answer» E. | |
| 360. |
The c.g. of the shaded area of the below figure from the x-axis is |
| A. | 3b/10 |
| B. | a/4 |
| C. | 3a/4 |
| D. | 3a/10 |
| Answer» D. 3a/10 | |
| 361. |
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 | |
| 362. |
If the horizontal range is 2.5 times the greatest height, the angle of projection of the projectile, is |
| A. | 57° |
| B. | 58° |
| C. | 59° |
| D. | 60°. |
| Answer» C. 59° | |
| 363. |
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 | |
| 364. |
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. | |
| 365. |
To attain the synchronous orbit, the launch of a satellite, is done from a place |
| A. | on equator |
| B. | on 30° latitude |
| C. | on 45° latitude |
| D. | on 60° latitude |
| Answer» B. on 30° latitude | |
| 366. |
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. | |
| 367. |
If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 368. |
The unit of moments in M.K.S system, is |
| A. | kgm |
| B. | kg/m² |
| C. | kg/sec² |
| D. | kg/sec. |
| Answer» B. kg/m² | |
| 369. |
When a body slides down an inclined surface, the acceleration (f) of the body, is given by |
| A. | f = g |
| B. | f = g sin θ |
| C. | f = g cos θ |
| D. | f = g tan θ. |
| Answer» C. f = g cos θ | |
| 370. |
If α and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 371. |
If the velocity of projection is 4 m/sec and the angle of projection is α°, the maximum height of the projectile from a horizontal plane, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 372. |
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 | |
| 373. |
If the resultant of two forces P and Q acting at an angle θ makes an angle α with P, then tan α equals |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 374. |
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 1/2 , 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. | |
| 375. |
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. | |
| 376. |
Time of flight of a projectile on a horizontal plane, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 377. |
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√10 m/sec |
| B. | 10√5 m/sec |
| C. | 5√3 m/sec |
| D. | 3√5 m/sec. |
| Answer» B. 10√5 m/sec | |
| 378. |
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. | |
| 379. |
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 | |
| 380. |
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 |
| Answer» D. downwards at its upper end | |
| 381. |
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. | |
| 382. |
The c.g. of the shaded area of the below figure whose curve OM is a parabola from y-axis, is |
| A. | a/4 |
| B. | 3a/4 |
| C. | 3b/10 |
| D. | 3a/10 |
| Answer» C. 3b/10 | |
| 383. |
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. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 384. |
The beam shown in below figure is supported by a hinge at A and a roller at B. The reaction RA of the hinged support A of the beam, is |
| A. | 10.8 t |
| B. | 10.6 t |
| C. | 10.4 t |
| D. | 10.2 t |
| Answer» E. | |
| 385. |
The resultant of two forces P and Q acting at an angle θ, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 386. |
The vertical reaction at the support A of the structure shown in below figure, is |
| A. | 1 t |
| B. | 2 t |
| C. | 3 t |
| D. | 2.5 t |
| Answer» D. 2.5 t | |
| 387. |
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 | |
| 388. |
The resultant of the following three couples 20 kg force, 0.5 m arm, +ve sense 30 kg force, 1 m arm, -ve sense 40 kg force, 0.25 m arm, +ve sense having arm of 0.5 m will be |
| A. | 20 kg, -ve sense |
| B. | 20 kg, + ve sense |
| C. | 10 kg, + ve sense |
| D. | 10 kg, -ve sense |
| Answer» B. 20 kg, + ve sense | |
| 389. |
A smooth cylinder lying on a __________ is in neutral equilibrium. |
| A. | Curved surface |
| B. | Convex surface |
| C. | Horizontal surface |
| D. | None of these |
| Answer» D. None of these | |
| 390. |
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is |
| A. | db³/12 |
| B. | bd³/12 |
| C. | db³/36 |
| D. | bd³/36 |
| Answer» B. bd³/12 | |
| 391. |
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is |
| A. | β/2 |
| B. | 30° + β/2 |
| C. | 45° + β/2 |
| D. | 60° + β/2 |
| Answer» D. 60° + β/2 | |
| 392. |
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 δ = Deflection of the spring.) |
| A. | 2π. √(g/δ) |
| B. | 1/2π. √(g/δ) |
| C. | 2π. √(δ/g) |
| D. | 1/2π. √(δ/g) |
| Answer» C. 2π. √(δ/g) | |
| 393. |
The resolved part of the resultant of two forces inclined at an angle 'θ' in a given direction is equal to |
| A. | The algebraic sum of the resolved parts of the forces in the given direction |
| B. | The sum of the resolved parts of the forces in the given direction |
| C. | The difference of the forces multiplied by the cosine of θ |
| D. | The sum of the forces multiplied by the sine of θ |
| Answer» B. The sum of the resolved parts of the forces in the given direction | |
| 394. |
The product of either force of couple with the arm of the couple is called |
| A. | Resultant couple |
| B. | Moment of the forces |
| C. | Resulting couple |
| D. | Moment of the couple |
| Answer» E. | |
| 395. |
The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is |
| A. | 9 cm4 |
| B. | 12 cm4 |
| C. | 16 cm4 |
| D. | 20 cm4 |
| Answer» D. 20 cm4 | |
| 396. |
A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act |
| A. | Towards the wall at its upper end |
| B. | Away from the wall at its upper end |
| C. | Downward at its upper end |
| D. | Upward at its upper end |
| Answer» E. | |
| 397. |
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 | |
| 398. |
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 |
| D. | None of these |
| Answer» B. Non-reversible | |
| 399. |
The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is |
| A. | Same |
| B. | Double |
| C. | Half |
| D. | Four times |
| Answer» C. Half | |
| 400. |
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to |
| A. | Area of the triangle |
| B. | Twice the area of the triangle |
| C. | Half the area of the triangle |
| D. | None of these |
| Answer» C. Half the area of the triangle | |