MCQOPTIONS
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MCQOPTIONS
This section includes 267 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The reaction at the central support of the beam hinged at shown in below figure is |
| A. | 2 |
| B. | 5.8 |
| C. | 0.2 |
| D. | 3.5 |
| E. | . |
| Answer» C. 0.2 | |
| 2. |
The displacement of a particle which moves along a straight line is given by = 4 + 3 - 10 where is in meters and is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is |
| A. | sec |
| B. | 1 sec |
| C. | 1.5 sec |
| D. | 1.5 sec. |
| Answer» C. 1.5 sec | |
| 3. |
A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec. Time required to traverse a distance of 1.5 m, is |
| A. | 40 sec |
| B. | 30 sec |
| C. | 20 sec |
| D. | 15 sec |
| E. | 10 sec. |
| Answer» D. 15 sec | |
| 4. |
A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be |
| A. | 0.5 m/sec |
| B. | 1.5 m/sec |
| C. | 2.5 m/sec |
| D. | 3.5 m/sec |
| E. | 4.5 m/sec. |
| Answer» D. 3.5 m/sec | |
| 5. |
A pilot flies a small plane in a vertical loop of radius . At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is , the speed of the plane at the top of its trajectory would be |
| A. | zero |
| B. | infinite |
| C. | . |
| Answer» D. | |
| 6. |
Total no of instantaneous centres of a machine having links, is |
| A. | /2 |
| B. | ( |
| C. | - 1) |
| Answer» E. | |
| 7. |
A weight of 100 kg is supported by a string whose ends are attached to pegs and 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. | |
| 8. |
The resolved part of the resultant of two forces inclined at an angle θ in a given direction is |
| A. | algebraic sum of the resolved parts of the forces in the direction |
| B. | arithmetical sum of the resolved parts of the forces in the direction |
| C. | difference of the forces multiplied by cosine θ° |
| D. | sum of the forces multiplied by the sine θ |
| E. | sum of the forces multiplied by the tangent θ°. |
| Answer» B. arithmetical sum of the resolved parts of the forces in the direction | |
| 9. |
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 where is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5. |
| Answer» E. | |
| 10. |
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball on the table. If the impact is perfectly plastic, the velocity of the ball just after impact would be |
| A. | zero |
| B. | 5 m/sec |
| C. | 10 m/sec |
| D. | none of these. |
| Answer» B. 5 m/sec | |
| 11. |
If two forces each equal to in magnitude act at right angles, their effect may be neutralised by a third force acting along their bisector in opposite direction whose magnitude will be |
| A. | 2 |
| B. | 1/2 |
| C. | |
| D. | 3 |
| E. | none of these. |
| Answer» D. 3 | |
| 12. |
A weight is suspended at the free end of a light member hinged to a vertical wall. If the angle of inclination of the member with the upper wall is θ°, the force introduced in the member, is |
| A. | sec θ |
| B. | cos θ |
| C. | sin θ |
| D. | cosec θ |
| E. | tan θ. |
| Answer» B. cos θ | |
| 13. |
If a particle moves with a uniform angular velocity ω radians/sec along the circumference of a circle of radius , the equation for the velocity of the particle, is |
| A. | = ω |
| B. | = ω |
| C. | = ω |
| D. | = ω |
| Answer» E. | |
| 14. |
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called |
| A. | virtual work |
| B. | imaginary work |
| C. | zero work |
| D. | negative work. |
| Answer» E. | |
| 15. |
A sphere is resting on two planes and which are inclined at 45° and 60° respectively with the horizontal. The reaction on the plane will be |
| A. | less than that on |
| B. | more than that of |
| C. | equal to that on |
| D. | zero |
| E. | none of these. |
| Answer» C. equal to that on | |
| 16. |
The centre of gravity of a trapezoidal dam section whose top width is , bottom width is and the vertical side is , from its vertical face is |
| A. | none of these. |
| Answer» B. | |
| 17. |
The force which produces an acceleration of 1 m/sec in a mass of one kg, is called |
| A. | dyne |
| B. | Netwon |
| C. | joule |
| D. | erg. |
| Answer» C. joule | |
| 18. |
Ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/s hits an identical stationary ball on the table. If the impact is perfectly elastic, the velocity of the ball just after impact would be |
| A. | zero |
| B. | 5 m/sec |
| C. | 10 m/sec |
| D. | none of these. |
| Answer» D. none of these. | |
| 19. |
The ratio of the reactions and of a simply supported beam shown in below figure is |
| A. | 0.50 |
| B. | 0.40 |
| C. | 0.67 |
| D. | 1.00 |
| E. | 1.50 |
| Answer» E. 1.50 | |
| 20. |
If is the span of a light suspension bridge whose each cable carries total weight () and the central dip is , the horizontal pull at each support, is |
| A. | . |
| Answer» C. | |
| 21. |
The Centre of gravity of a 10 x 15 x 5 cm 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 | |
| 22. |
If and ω are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius , will be |
| A. | ω. |
| Answer» C. | |
| 23. |
Two shots fired simultaneously from the top and bottom of a vertical tower with elevations of 30° and 45° respectively strike a target simultaneously. If horizontal distance of the target from the tower is 1000 m, the height of the tower is |
| A. | 350 m |
| B. | 375 m |
| C. | 400 m |
| D. | 425 m. |
| Answer» E. | |
| 24. |
Power developed by a torque, is |
| A. | 2π |
| B. | kg m/min |
| C. | all the above. |
| Answer» E. | |
| 25. |
On a mass describing a circular path of radius , 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 |
| Answer» C. acts away from the centre of rotation | |
| 26. |
The velocity of a body fallen from height , on reaching the ground is given by |
| A. | = 2 |
| B. | = 2 |
| C. | = |
| D. | = 1/ |
| E. | /2 |
| Answer» D. = 1/ | |
| 27. |
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 | |
| 28. |
The equation of motion of a particle starting from rest along a straight line is = - 3 + 5. The ratio of the velocities after 5 sec and 3 sec will be |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| E. | 4.5 |
| Answer» E. 4.5 | |
| 29. |
The height at which the end of a rope of length should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is |
| A. | |
| B. | none of these. |
| Answer» D. | |
| 30. |
is the force acting on a body whose mass is and acceleration is . The equation - = 0, is known as |
| A. | equation of dynamics |
| B. | equation of dynamic equilibrium |
| C. | equation of statics |
| D. | none of these. |
| Answer» B. equation of dynamic equilibrium | |
| 31. |
The moment of inertia of the shaded portion of the area shown in below figure about the -axis, is |
| A. | 229.34 cm |
| B. | 329.34 cm |
| C. | 429.34 cm |
| D. | 529.34 cm |
| E. | . |
| Answer» D. 529.34 cm | |
| 32. |
The load shared by the member of the structure shown in below figure is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 3 |
| E. | . |
| Answer» D. 3 | |
| 33. |
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 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 |
| E. | 3.0 m/sec |
| Answer» C. 1.5 m/sec | |
| 34. |
A body of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body is 1/3, the acceleration is |
| A. | 0.5 m/sec |
| B. | 0.75 m/sec |
| C. | 1.00 m/sec |
| D. | 1.25 m/sec |
| E. | . |
| Answer» D. 1.25 m/sec | |
| 35. |
The reaction of the roller support of the beam shown in below figure is |
| A. | 10.8 |
| B. | 10.6 |
| C. | 10.4 |
| D. | 10.2 |
| E. | . |
| Answer» B. 10.6 | |
| 36. |
The acceleration of a train starting from rest at any instant is where is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of |
| A. | 2000 m |
| B. | 2100 m |
| C. | 2200 m |
| D. | 2300 m |
| E. | 2500 m. |
| Answer» E. 2500 m. | |
| 37. |
The motion of a particle is described by the relation = - 10 + 30, where is in metres and in seconds. The total distance travelled by the particle from = 0 to = 10 seconds would be |
| A. | zero |
| B. | 30 m |
| C. | 50 m |
| D. | 60 m |
| E. | none of these. |
| Answer» B. 30 m | |
| 38. |
The resultant of two forces acting at right angles is 5 kgf and if they act at an angle of 60°, it is kgf. The magnitudes of the forces are : |
| A. | 2 kgf, 3 kgf |
| B. | 3 kgf, 4 kgf |
| C. | 4 kgf, 5 kgf |
| D. | 5 kgf, 3 kgf. |
| Answer» C. 4 kgf, 5 kgf | |
| 39. |
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. | 85 m/sec. |
| E. | 90 m/sec. |
| Answer» F. | |
| 40. |
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 |
| E. | 14 km/hrs. |
| Answer» E. 14 km/hrs. | |
| 41. |
The equation of motion of a particle starting from rest along a straight line is = - 3 + 5. The ratio of the accelerations after 5 sec and 3 sec will be |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 42. |
A projectile is thrown at an angle a to the horizontal with α velocity . It will have the maximum centripetal acceleration |
| A. | at the start |
| B. | at the top of the trajectory |
| C. | as it strikes the ground |
| D. | else where. |
| Answer» B. at the top of the trajectory | |
| 43. |
The vertical reaction at the support of the structure shown in below figure, is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 2.5 |
| E. | . |
| Answer» D. 2.5 | |
| 44. |
A string of length 90 cm is fastened to two points and at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force is applied to the ring such that it is in equilibrium vertically below . The value of is : |
| A. | 40 g |
| B. | 60 g |
| C. | 80 g |
| D. | 100 g. |
| Answer» D. 100 g. | |
| 45. |
The reaction at the support of the beam shown in below figure is |
| A. | 2 |
| B. | 5.8 |
| C. | 0.2 |
| D. | 3.5 |
| E. | . |
| Answer» B. 5.8 | |
| 46. |
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 , 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. | |
| 47. |
The beam shown in below figure is supported by a hinge at and a roller at . The reaction of the hinged support of the beam, is |
| A. | 10.8 |
| B. | 10.6 |
| C. | 10.4 |
| D. | 10.2 |
| E. | . |
| Answer» E. . | |
| 48. |
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 |
| E. | 40 kg. |
| Answer» C. 30 kg | |
| 49. |
A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is |
| A. | 40 kg |
| B. | 60 kg |
| C. | 10 kg |
| D. | 100 kg. |
| Answer» D. 100 kg. | |
| 50. |
A square hole is made in a circular lamina, the diagonal of the square is equal to the radius of the circleas shown in below figure the shift in the centre of gravity is |
| A. | [A]. |
| B. | [B]. |
| C. | [C]. |
| D. | [D]. |
| Answer» B. [B]. | |